Land Degradation & Development最新文献

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Regulatory Effects of Soil and Water Conservation Practices on Hydrological Processes in the Red Soil Zone of Southern China Driven by Time‐Course Rainfall 时空降雨驱动下南方红壤区水土保持措施对水文过程的调节作用
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-09-06 DOI: 10.1002/ldr.70174
Lei Tan, Xiaoan Chen, Ce Wang, Jinjin Zhu, Chengli Zhu, Tonghang Xi
{"title":"Regulatory Effects of Soil and Water Conservation Practices on Hydrological Processes in the Red Soil Zone of Southern China Driven by Time‐Course Rainfall","authors":"Lei Tan, Xiaoan Chen, Ce Wang, Jinjin Zhu, Chengli Zhu, Tonghang Xi","doi":"10.1002/ldr.70174","DOIUrl":"https://doi.org/10.1002/ldr.70174","url":null,"abstract":"Rainfall depth fluctuates, which increases the uncertainty of soil erosion and moisture dynamics in sloping cropland. Soil and water conservation practices affect soil erosion and moisture infiltration. However, the responses of runoff and soil moisture to time‐course rainfall patterns under soil and water conservation practices are not fully understood. Based on the distribution of concentrated rainfall depth, we classified 122 natural rainfall events in Southern China from 2019 to 2022 into advanced, intermediate, delayed, and uniform patterns. We used 12 runoff plots to observe runoff and soil moisture dynamics in sloping cropland under soil and water conservation practices (i.e., bare land, no‐till, conventional tillage, conventional tillage with straw mulch, conventional tillage with polyacrylamide, and cross‐slope ridge tillage). The results demonstrate that the advanced and intermediate rainfall patterns were the most prevalent in South China, occurring up to 82.79% of the frequency and contributing to 88.27% of the total runoff depth. Soil moisture increment and growth rate were maximum for the advanced pattern and minimum for the uniform pattern, and decreased with increasing soil depth, but soil moisture increment per unit of rainfall depth was maximum for the delayed pattern. Soil moisture increment and pre‐rainfall soil moisture content were negatively correlated under advanced, intermediate, and delayed patterns but were positively correlated under the uniform pattern. Additionally, the applied soil and water conservation practices reduced annual runoff depth by 69%–79% and significantly increased long‐term soil moisture content. The combined effect of the practices on runoff and soil moisture indicates that ploughing in conjunction with straw mulching is a more suitable practice for sloping land in Southern China. The findings can enhance our comprehension of runoff generation and soil moisture infiltration processes in red soil hilly regions and furnish guidance for improving regional soil and water conservation strategies.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"15 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Soil Importation and Wadi Channel Narrowing for Agricultural Expansion Alter Sediment Patterns and Soil Chemistry in Arid Oman 土壤输入和农业扩张的河道变窄改变了阿曼干旱地区的泥沙形态和土壤化学
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-09-05 DOI: 10.1002/ldr.70159
Ahmed Al‐Mayahi, Said Al‐Ismaily, Salwa Al Harthy, Fatima Al Muraza Ba Abood, Sarah Al Hamrashdi, Anvar Kacimov, Hamed Al‐Busaidi, Daniel Blackburn, Rahma Al‐Habsi
{"title":"Soil Importation and Wadi Channel Narrowing for Agricultural Expansion Alter Sediment Patterns and Soil Chemistry in Arid Oman","authors":"Ahmed Al‐Mayahi, Said Al‐Ismaily, Salwa Al Harthy, Fatima Al Muraza Ba Abood, Sarah Al Hamrashdi, Anvar Kacimov, Hamed Al‐Busaidi, Daniel Blackburn, Rahma Al‐Habsi","doi":"10.1002/ldr.70159","DOIUrl":"https://doi.org/10.1002/ldr.70159","url":null,"abstract":"Wadis—ephemeral watercourses in arid regions—serve as vital ecohydrological corridors, supporting both biodiversity and water resource functions. Yet, these fragile systems are increasingly threatened by human interventions. Impacts of agricultural expansion, particularly soil importation and wadi occlusion, on sediment dynamics and surface‐soil properties in Wadi Al‐Khoud, Oman are investigated. Sampling at three transects across the wadi (<jats:italic>n</jats:italic> = 48), combined with laboratory analysis, is done. Spatial statistics was used to assess soil texture, topsoil chemistry, and downstream nabkhas as geomorphic landforms. The imported “alien” soils—often mixed with waste like construction debris, crashed rock from local quarries and stripped asphalt—altered soil composition, with concentrations of Na<jats:sup>+</jats:sup>, NO<jats:sub>3</jats:sub>;<jats:sup>−</jats:sup>, and K<jats:sup>+</jats:sup> increased by 249.11%, 32.71% and 103.93%, respectively, compared to the control. Texture at the anthropogenically impacted site showed a significant increase in fine silt content by 4.28 folds compared to control. Semivariogram analysis corroborated disrupted spatial texture patterns. Over a decade of 2010–2020, wadi's average width contracted by 73 m, amounting to approximately 95,838 m<jats:sup>3</jats:sup> of imported material. This narrowing induced a Venturi contracta effect, which increases the flow velocities, and consequently scoures more sediments, thereby intensifying flood‐driven erosion and contaminant dispersal. The formed nabkhas reflect ecological shifts in the wadi/floodplain. Nabkhas buffer sediment loss but alarm the instability of the upstream sediments. Legal frameworks akin to urban landscaping regulations are urgently needed to protect wadis as “natural hydraulic veins” and critical environmental assets in Oman's rapidly urbanizing drylands.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"24 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring Electrical Resistivity Tomography (ERT) to Detect Soil Pipes: Theoretical Modeling and Field Experiments 探索电阻率层析成像(ERT)探测土壤管道:理论建模与现场实验
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-09-04 DOI: 10.1002/ldr.70165
Anita Bernatek‐Jakiel, Marta Kondracka
{"title":"Exploring Electrical Resistivity Tomography (ERT) to Detect Soil Pipes: Theoretical Modeling and Field Experiments","authors":"Anita Bernatek‐Jakiel, Marta Kondracka","doi":"10.1002/ldr.70165","DOIUrl":"https://doi.org/10.1002/ldr.70165","url":null,"abstract":"Soil erosion research remains critical for sustainable development as it impacts soil health through different erosive processes. Recent studies on soil piping highlight advancements in detecting surface features (using UAV); however, detecting underground pipes still remains challenging. This study aims to evaluate electrical resistivity tomography (ERT), a frequently used geophysical method, for detecting soil pipes. The study was based on field experiments conducted in the Bieszczady Mountains (the Carpathians, SE Poland) and theoretical modeling using Resistivity 2D modeling software. The results were compared with the existing research and confirmed by the trench. We evaluated various measurement settings, including array configurations (Wenner—W, Wenner‐Schlumberger—WS and dipole–dipole—DD), electrode spacing, and measurement orientation through the pipe system to determine their impact on detecting pipes regarding their size, shape, and depth. We performed six ERT profiles in the field, and we modeled the electrical response of a theoretical void at varying subsurface positions. In the theoretical modeling, we considered two scenarios with root‐mean‐squared errors (RMS) of 0% and 5%. The results confirmed that higher resistivity anomalies indicated pipes, with the DD configuration showing lower resistivity (105 Ωm) compared to W and WS configurations (268–427 Ωm). The comparison with other studies indicates that there is no universal threshold confirming soil pipe presence; instead, a clear electrical contrast with surroundings is crucial. Our findings suggest that while all tested configurations effectively detect pipes, their choice impacts image quality in the case of anomaly contrast and shape dependent on the sensitivity of the selected configuration. We recommend using the WS configuration for detecting both vertical and horizontal features. The number of anomalies influences RMS and should be critically evaluated during surveys. Our findings can assist researchers and practitioners in designing ERT studies in different environments.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"34 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144995184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Salinity Effects on Anammox Biodegradation and Microbial Resilience in Land‐Degraded Soils 盐度对土地退化土壤厌氧氨氧化菌生物降解和微生物恢复力的影响
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-09-04 DOI: 10.1002/ldr.70170
Ruili Yang, Yonghao Sha, Yenan Li, Zhuqiu Sun, Lian Zhou, Haodong Ji, Yuyao Zhu, Bairen Yang
{"title":"Salinity Effects on Anammox Biodegradation and Microbial Resilience in Land‐Degraded Soils","authors":"Ruili Yang, Yonghao Sha, Yenan Li, Zhuqiu Sun, Lian Zhou, Haodong Ji, Yuyao Zhu, Bairen Yang","doi":"10.1002/ldr.70170","DOIUrl":"https://doi.org/10.1002/ldr.70170","url":null,"abstract":"Soil salinity is a major concern for both agricultural productivity and land degradation. In recent years, increasing attention has been given to managing saline soils, restoring degraded lands, and addressing growing global food demands under the impact of climate change. Rising salinity not only accelerates desertification but also degrades soil quality, disrupting key microbial processes, such as anaerobic ammonium oxidation (Anammox), and reducing overall microbial activities. The high diversity of soil microorganisms plays a critical role in ecological functions, including nutrient cycling and nitrogen transformation. The main objective of this study is to highlight changes in bacterial communities and their function under salt stress conditions. Furthermore, soil microbes can potentially be utilized to mitigate soil salinity and promote sustainable land use. Therefore, this review explores the impact of salinity on anammox processes and land degradation, as well as how increasing soil salinization may influence the functional diversity of soil microbial communities. The present research also focuses on interactions among microbial diversity and functions across various natural ecosystems. Understanding these mechanisms is vital for improving nitrogen use efficiency, reducing environmental pollution, and reclaiming saline‐degraded lands for agricultural productivity. This review outlines future research directions and emphasizes the need for interdisciplinary collaboration among scientists and policymakers to develop effective soil restoration and management strategies.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"13 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144995187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Spatial Statistical Units on the Zoning of Ecosystem Soil Retention Services: A Case Study of the Loess Plateau 空间统计单位对生态系统土壤保持功能区划的影响——以黄土高原为例
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-09-04 DOI: 10.1002/ldr.70171
Li Zhao, Zhuowei Hu, Mi Wang, Xiangping Liu, Wenxing Hou, Yongcai Wang, Siyuan Li, Junjie Wang
{"title":"Effects of Spatial Statistical Units on the Zoning of Ecosystem Soil Retention Services: A Case Study of the Loess Plateau","authors":"Li Zhao, Zhuowei Hu, Mi Wang, Xiangping Liu, Wenxing Hou, Yongcai Wang, Siyuan Li, Junjie Wang","doi":"10.1002/ldr.70171","DOIUrl":"https://doi.org/10.1002/ldr.70171","url":null,"abstract":"Soil retention services are vital for preventing erosion and maintaining ecological stability. On the Loess Plateau, spatial zoning supports targeted ecological management and sustainable development, but previous studies have underemphasized the influence of statistical unit scale, limiting the scientific basis for differentiated strategies. Employing a Pressure–State–Response framework, we developed a zoning indicator system and applied Self‐Organizing Feature Map, UMAP dimensionality reduction, and K‐means clustering at grid, watershed, and county scales. We found significant differences in the number, distribution, and clustering patterns of zones across scales, driven by the varying dominance of natural versus socio‐economic factors. Natural drivers prevailed at grid and watershed scales, whereas socio‐economic factors dominated at the county scale. Multilevel geographical detector analysis identified the watershed scale as optimal, owing to its ecological coherence and hydrological integrity. Machine learning further revealed pronounced spatial heterogeneity in factor contributions and directions at the watershed scale. These findings highlight the scale dependence of soil retention mechanisms and the need for site‐specific management strategies. Our framework offers a novel approach to ecosystem service zoning, informing research and policy on the Loess Plateau and analogous regions.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"40 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Potential of Soils Natural Sorbents for Environmental Decontamination From 137Cs 土壤天然吸附剂对137Cs环境净化的潜力
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-09-03 DOI: 10.1002/ldr.70142
Katarzyna Szarłowicz, Filip Jędrzejek, Marcin Stobiński, Michał Skiba
{"title":"Potential of Soils Natural Sorbents for Environmental Decontamination From 137Cs","authors":"Katarzyna Szarłowicz, Filip Jędrzejek, Marcin Stobiński, Michał Skiba","doi":"10.1002/ldr.70142","DOIUrl":"https://doi.org/10.1002/ldr.70142","url":null,"abstract":"This study addresses the existing research gap concerning the lack of integrated data on the role of in situ soil components in the long‐term fixation of <jats:sup>137</jats:sup>Cs under natural, protected, and non‐agricultural conditions. The contamination of ecosystems by radioactive isotopes, particularly <jats:sup>137</jats:sup>Cs, represents a considerable environmental hazard. This investigation sought to identify cesium ion absorption sites in soils collected from Karkonosze National Park to improve understanding of cesium retention mechanisms. The research was conducted within the protected area to reduce anthropogenic impacts. A radiological assessment was performed on individual soil fractions. Gamma spectrometry and specific mineralogical analyses were employed to evaluate radionuclide concentrations and to determine the risk scale. The <jats:sup>137</jats:sup>Cs distribution ranges from 70.1 ± 3.9 Bq m<jats:sup>−2</jats:sup> to 18.8 ± 1.1 kBq m<jats:sup>−2</jats:sup>, with the highest concentrations in the southeast and is higher than the average value for Poland. The findings illustrate that cesium, primarily a residue from the Chernobyl disaster, exhibited an uneven distribution, with elevated concentrations in soils enriched with clay minerals. The results suggest that clay minerals identified through mineralogical analysis in the research area have a strong capacity to retain <jats:sup>137</jats:sup>Cs, highlighting their potential as natural sorbents in environmental decontamination processes. The level of natural radioactivity expressed as Adsorbed Dose Rate (ADR) (51–153 nGy h<jats:sup>−1</jats:sup>) is higher than recorded in Poland, attributable to the area's geological structure. These studies offer insight into cesium–soil interactions, supporting the development of more effective remediation strategies and highlighting soil's potential as a natural sorbent for decontamination.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"45 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144930607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Grazing Promotes Decomposition of Tibetan Sheep Dung in Alpine Meadow Through Decoupling Climate
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-09-01 DOI: 10.1002/ldr.70167
Weikang Zhao, Yan Zhang, Yi Sun, Fujiang Hou
{"title":"Grazing Promotes Decomposition of Tibetan Sheep Dung in Alpine Meadow Through Decoupling Climate","authors":"Weikang Zhao, Yan Zhang, Yi Sun, Fujiang Hou","doi":"10.1002/ldr.70167","DOIUrl":"https://doi.org/10.1002/ldr.70167","url":null,"abstract":"Dung decomposition plays a pivotal role in the cycling of carbon (C), nitrogen (N), and phosphorus (P). However, the combined effects of grazing system and grazing intensity on dung decomposition remain unclear. In this study, a 2‐year experiment was conducted to examine the effects of two grazing systems (continuous grazing and rotational grazing) and two grazing intensities (0 and 8 sheep ha<jats:sup>−1</jats:sup>) on Tibetan sheep dung decomposition in an alpine meadow on the Qinghai‐Tibetan Plateau. Grazing intensity at 8 sheep ha<jats:sup>−1</jats:sup> enhanced the decomposition rate of dung dry matter (DM) by 8.6%, C by 25.8%, N by 16.7%, and P by 63.4% compared to no grazing. Rotational grazing enhanced the decomposition rate of DM (3.7%), C (6.6%), N (57.9%), and P (101.2%) compared to continuous grazing. Grazing intensity exerted a stronger effect on dung decomposition than grazing system and their interaction (grazing system × grazing intensity). The fastest dung turnover rate occurred at a grazing intensity of 8 sheep ha<jats:sup>−1</jats:sup>. Rotational grazing increased the annual dung decomposition mass per unit area of pasture by 55.1% compared to continuous grazing. The stoichiometric characteristics of dung contributed −71.9%, −22.4%, 66.0%, and 8.7% to dung DM, C, N, and P decomposition, respectively. Day and night temperature difference, and initial C, N, and P contents explained 14.8%, 10.6%, 14.8%, and 10.6% variance in DM, C, N, and P decomposition, respectively. Grazing decoupled climate effects, thereby promoting dung decomposition. The results suggest that grazing promotes the decomposition and turnover of Tibetan sheep dung in the Qinghai‐Tibetan Plateau, providing insights into nutrient cycling under global climate change.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"41 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergizing Economic Growth and Environmental Sustainability: The Impact of Urban Land Agglomeration in the Yangtze River Delta 经济增长与环境可持续性的协同:长三角城市群的影响
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-08-31 DOI: 10.1002/ldr.70151
Tian Yang, Jie Zeng, Wanxu Chen, Liyan Yang, Xiaowei Yao, Binbin Zheng
{"title":"Synergizing Economic Growth and Environmental Sustainability: The Impact of Urban Land Agglomeration in the Yangtze River Delta","authors":"Tian Yang, Jie Zeng, Wanxu Chen, Liyan Yang, Xiaowei Yao, Binbin Zheng","doi":"10.1002/ldr.70151","DOIUrl":"https://doi.org/10.1002/ldr.70151","url":null,"abstract":"Urban Land Agglomeration (ULA) is continuously reshaping the way of urban spatial growth, emerging as a crucial pathway to balance economic growth and environmental sustainability. However, such economic‐environmental synergies remain unclear, posing challenges to sustainable urban development. This study, using panel data from China's Yangtze River Delta urban agglomeration (2006–2020), introduces the fixed effect panel regression model, mediating effect model, and spatial panel Durbin model to investigate the economic‐environmental effects of ULA, further exploring the intrinsic mechanisms and spatial spillover effects. The findings indicate that ULA can promote economic development and reduce environmental costs, thereby triggering the Porter effect. Technological innovation and industrial upgrading serve as key mechanisms in this process. Furthermore, ULA exhibits significant positive economic spillover effects, while its environmental spillover effects remain less pronounced. Heterogeneity analyses show that the Porter effect triggered by ULA demonstrates an enhancing trend, with more pronounced economic benefits in coastal cities and more significant environmental improvements in inland cities. The results of this study provide insights for promoting sustainable land management, integrated economic‐environmental governance, and region‐coordinated development strategies.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"27 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Periodic Mulching on Temperature Sensitivity of Soil Respiration and CO2 Emission in a Lei Shoot‐Producing Bamboo Forest 周期覆盖对Lei -产笋竹林土壤呼吸和CO2排放温度敏感性的影响
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-08-30 DOI: 10.1002/ldr.70168
Li Li, Zimiao Zhuang, Bingkai Yang, Sami Ullah, Weifeng Wang
{"title":"Effects of Periodic Mulching on Temperature Sensitivity of Soil Respiration and CO2 Emission in a Lei Shoot‐Producing Bamboo Forest","authors":"Li Li, Zimiao Zhuang, Bingkai Yang, Sami Ullah, Weifeng Wang","doi":"10.1002/ldr.70168","DOIUrl":"https://doi.org/10.1002/ldr.70168","url":null,"abstract":"Lei bamboo (&lt;jats:styled-content style=\"fixed-case\"&gt;&lt;jats:italic&gt;Phyllostachys violascens&lt;/jats:italic&gt;&lt;/jats:styled-content&gt;), an economically significant bamboo species in subtropical China, is routinely subjected to periodic mulching (hereafter referred to as “mulching”) to raise soil temperature, thereby advancing the timing of bamboo shoot emergence and increasing shoot yield. While increasing yield, these practices may contribute to bamboo forest degradation in soil quality and substantial greenhouse gas emissions from the soil. To understand soil CO&lt;jats:sub&gt;2&lt;/jats:sub&gt; emission temperature sensitivity (&lt;jats:italic&gt;Q&lt;/jats:italic&gt;&lt;jats:sub&gt;10&lt;/jats:sub&gt;) and soil CO&lt;jats:sub&gt;2&lt;/jats:sub&gt; emissions from bamboo forests subjected to various mulching treatments, we selected four bamboo forest stands under different mulching histories with three replicates in Nanjing, China: S1 (abandoned after 8 years of winter rice husk mulching and 2 years without), S2 (10 years of continuous mulching), S3 (5 years of mulching followed by 5 years without), and CK (no mulching). Soil samples from three depths (0–10 cm, 10–20 cm, and 20–30 cm) were incubated at different temperatures (5°C–35°C) to assess the effects of mulching on soil CO&lt;jats:sub&gt;2&lt;/jats:sub&gt; emissions and &lt;jats:italic&gt;Q&lt;/jats:italic&gt;&lt;jats:sub&gt;10&lt;/jats:sub&gt;. Soil properties including organic carbon (SOC), nitrogen (N), phosphorus (P), potassium (K), water content (SWC), microbial carbon (MBC) and microbial nitrogen (MBN) were measured to determine the impacts. The results indicated that: (1) Mulching management significantly increased soil CO&lt;jats:sub&gt;2&lt;/jats:sub&gt; emissions at the 0–10 cm and 10–20 cm soil depths. S3 showed the highest cumulative CO&lt;jats:sub&gt;2&lt;/jats:sub&gt; emissions, with increases of +40% at 0–10 cm and +45% at 10–20 cm compared with CK. (2) Mulching significantly increased &lt;jats:italic&gt;Q&lt;/jats:italic&gt;&lt;jats:sub&gt;10&lt;/jats:sub&gt;, which decreased with soil depth. S1 presented the highest &lt;jats:italic&gt;Q&lt;/jats:italic&gt;&lt;jats:sub&gt;10&lt;/jats:sub&gt; values across all soil layers, which were 73%, 66%, and 83% higher than S2, S3, and CK in the 0–10 cm layer, respectively. The interaction between mulching management and soil depth on &lt;jats:italic&gt;Q&lt;/jats:italic&gt;&lt;jats:sub&gt;10&lt;/jats:sub&gt; showed a greater effect in shallower soil layers. (3) &lt;jats:italic&gt;Q&lt;/jats:italic&gt;&lt;jats:sub&gt;10&lt;/jats:sub&gt; in mulched bamboo soil was significantly positively correlated with SOC and the C/N ratio in the 0–10 cm layer, and negatively correlated with SBD. (4) Continuous mulching (S2) maintained higher levels of SOC, TN, SWC, MBC, and MBN in both the 0–10 cm and 10–20 cm layers, while exhibiting the lowest CO&lt;jats:sub&gt;2&lt;/jats:sub&gt; emission rate and &lt;jats:italic&gt;Q&lt;/jats:italic&gt;&lt;jats:sub&gt;10&lt;/jats:sub&gt; compared to S1 and S3. In conclusion, intermittent mulching led to greater soil CO&lt;jats:sub&gt;2&lt;/jats:sub&gt; emissions and temperature sensitivity. Continuous mulching, combined with appropriate stand structure, reduced soil","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"19 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Meta‐Analysis‐Based Tillage Systems Optimization Promotes Synergy Among Crop Productivity, Water Use Efficiency and Carbon Emissions Under Changing Environments 在不断变化的环境下,基于元分析的耕作系统优化促进了作物生产力、水分利用效率和碳排放之间的协同作用
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2025-08-30 DOI: 10.1002/ldr.70118
Mo Li, Min Xue, Zhaomei Gai, Yingshan Chen, Yaowen Xu, Kaihua Cao, Qiang Fu
{"title":"Meta‐Analysis‐Based Tillage Systems Optimization Promotes Synergy Among Crop Productivity, Water Use Efficiency and Carbon Emissions Under Changing Environments","authors":"Mo Li, Min Xue, Zhaomei Gai, Yingshan Chen, Yaowen Xu, Kaihua Cao, Qiang Fu","doi":"10.1002/ldr.70118","DOIUrl":"https://doi.org/10.1002/ldr.70118","url":null,"abstract":"A tillage system (TS) is a fundamental strategic measure for increasing the comprehensive production capacity of land and food. In TS, the planting structure, tillage practices [no‐tillage (NT), shallow tillage (ST) and deep tillage (DT)] and water management practices interact and jointly influence economic benefits and environmental health. However, the sustainable optimization of TS under changing environments is challenging. In this study, a meta‐analysis‐based multi‐objective nonlinear model framework is proposed for TS optimization in Northeast China under changing environments, which is favorable for achieving synergy among the multiple goals of increasing agricultural economic benefits and water use efficiency and reducing carbon emissions through effective decision‐making related to water resource use, the planting structure, and tillage practices. The results revealed that TS optimization helps increase the synergy among the multi‐dimensional goals of the economy, carbon emissions, and resource use of TS by 37.5% compared with the status quo. The optimization of the planting structure (increasing the planting areas for rice and soybean by 3.1% and 0.7%, respectively, and decreasing that for maize by 2.8%) provided water savings of 12% and a reduction in carbon emissions of 11%. Water and planting area allocations are sensitive to the changing environments, with the SSP2‐4.5 scenario yielding the smallest amount of irrigation water and the SSP5‐8.5 scenario yielding the largest planting area. From the perspective of balanced attention to the economy, environment, and resource use efficiency, a weight ratio (DT:NT:ST) of 0.20:0.54:0.25 was obtained, indicating that NT is a more suitable tillage practice for Northeast China. This model can help decision‐makers manage water and land resources and tillage practices in TS in an efficient and environmentally friendly manner.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"9 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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