Land Degradation & Development最新文献

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Spatial Heterogeneity Characteristics and Driving Mechanisms of Abandoned Farmland in Different Scales and Regions in China
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-21 DOI: 10.1002/ldr.5394
Guangyong Li, Cuihong Jiang, Yu Gao, Juan Du
{"title":"Spatial Heterogeneity Characteristics and Driving Mechanisms of Abandoned Farmland in Different Scales and Regions in China","authors":"Guangyong Li, Cuihong Jiang, Yu Gao, Juan Du","doi":"10.1002/ldr.5394","DOIUrl":"https://doi.org/10.1002/ldr.5394","url":null,"abstract":"Abandonment of farmland has become a widespread land use phenomenon worldwide. However, the spatial pattern and driving factors of abandoned farmland in different scales and regions in China are still unclear, which limits the government in formulating relevant policies. This study is based on the statistical data of abandoned farmland in county level in 2020, and examines the spatial patterns and driving mechanisms of the abandoned farmland over national level and geographical divisions in China. The results show that the abandoned rate of farmland (ARF) in China is 6.4%, but the total area reaches 8.56 million hectares in 2020. Northern region (NR) has the largest abandoned farmland area (AFA) among the various geographical divisions. High ARFs concentrate over hilly, mountainous and plateau regions with complex terrain conditions at the national scale, while plains and basins represent the opposite. The driving mechanisms of abandoned farmland vary widely at national scale and each geographical division. Agricultural added value (AAV) and surface roughness index (SRI) are two key factors that make opposite contributions to the spatial pattern of AFA and ARF across the country. Temperature, population ageing index (PAI), and AAV are the primary factors determining the AFA in NR, Northwest region (NWR) and Qinghai-Tibet region (QTR) respectively, whereas PAI and per capita disposable income (PCDI) are the main negative factors that determine the AFA in Southern region (SR). SRI and AAV are both the most critical factors determining ARF in the country, NR, and QTR, but presenting opposite contributions. Temperature and precipitation have a significant correlation with the ARF in the SR. Economic factors play important roles in controlling the ARF in the NWR. The results can assist the government to formulate scientific policies on farmland utilization at multiple scales over different regions.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"46 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867510","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
Intercropping With Green Manure Regulates Microbial Community Structure and Improves Tea Quality by Changing Soil Available Nutrients Under Organic Management
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-21 DOI: 10.1002/ldr.5437
Biao Wang, Xinhui Huang, Jianfeng Chen, Libo Fu, Yuanquan Chen, Wangsheng Gao, Peng Sui
{"title":"Intercropping With Green Manure Regulates Microbial Community Structure and Improves Tea Quality by Changing Soil Available Nutrients Under Organic Management","authors":"Biao Wang, Xinhui Huang, Jianfeng Chen, Libo Fu, Yuanquan Chen, Wangsheng Gao, Peng Sui","doi":"10.1002/ldr.5437","DOIUrl":"https://doi.org/10.1002/ldr.5437","url":null,"abstract":"Intercropping with green manure is recognized as a sustainable and ecological agricultural practice that regulates soil microbial activity and promotes plant growth. Despite its potential benefits, the impact of tea plants intercropping green manure on organic plantations remains largely unexplored. This study primarily evaluated the effects of intercropping summer green manure and winter green manure (TSR: tea intercropping soybean + ryegrass; TMR: tea intercropping mung bean + radish; TSC: tea intercropping soybean + common vetch; TM: tea plant monoculture, consider as control) on soil microbial community composition, tea quality, and bacterial function in an organic tea plantation. Relative to TM, TMR improved soil physical structure by decreasing the soil penetration resistance and bulk density by 30.4% and 9.30% (<jats:italic>p</jats:italic> &lt; 0.05), thus creating a conducive environment for microbial growth and activity. The composition and beta diversity of microbial communities have markedly differed after intercropping, attributed to changes in soil available nutrients, enzyme activities, and soil compaction. Intercropping increased the relative abundance of key microbial phyla, including Acidobacteriota, Firmicutes, Chytridiomycota, and Rozellomycota. Notably, TSR and TSC enhanced nitrogen fixation function by enriching beneficial microorganisms, such as <jats:italic>Bradyrhizobium</jats:italic> and <jats:italic>Clostridium_beijerinckii</jats:italic>, which were mediated by soil available potassium. The content of amino acids in tea leaves was increased by 20.2% under TMR. The partial least squares path model further revealed that intercropping with green manure improved tea quality by decreasing soil penetration resistance and increasing soil available phosphorus. Overall, intercropping with green manure can effectively reshape the microbial community and improve tea quality by affecting the soil environment, underscoring the importance of adopting intercropping strategies in organic plantations.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"48 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867069","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 Quality Index According to Diverse Land Use Systems Across the Europe
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-21 DOI: 10.1002/ldr.5438
Baig Abdullah Al Shoumik, Ewa Błońska, Jarosław Lasota
{"title":"Soil Quality Index According to Diverse Land Use Systems Across the Europe","authors":"Baig Abdullah Al Shoumik, Ewa Błońska, Jarosław Lasota","doi":"10.1002/ldr.5438","DOIUrl":"https://doi.org/10.1002/ldr.5438","url":null,"abstract":"Soil quality index (SQI) can be an effective parameter to evaluate soil quality based on plant growth and ecosystem services at a large scale. According to the European Commission, around 60%–70% of the European soil is not healthy due to degradation and rapid conversion of land uses; however, detailed studies on soil quality according to different land uses in the entire Europe are very limited. We aimed to develop an SQI using the Land Use and Coverage Area Frame Survey (LUCAS) database for the existing croplands (230 samples), grasslands (53 samples), and woodlands (36 samples) to evaluate the overall soil quality across the continent. A total of five soil variables (sand, organic carbon, electrical conductivity, bacteria, and fungi) were selected for the minimum dataset based on principal component analysis from all 13 variables to avoid redundancy. The relationship between the developed SQI and climatic variables (precipitation and temperature) was also analyzed. We found that croplands had higher SQI (0.45 ± 0.09) than grasslands (0.44 ± 0.09) and woodlands (0.43 ± 0.1), with no significant differences among the land uses (<jats:italic>p</jats:italic> &gt; 0.05). The spatial analysis revealed higher SQI (&gt; 0.46) in the central part of the EU and lower (&lt; 0.46) in the northern and southwestern EU. The sub‐categorical assessment of land uses showed that broadleaved and mixed woodland had better soil quality than the coniferous counterparts. The SQI showed a weak relationship with precipitation and temperature in all land uses, and it differs depending on climatic zones. Our findings also suggested that the agricultural management practices in cropland and better soil quality in grassland might buffer the influences of short‐term variations in temperature and precipitation. We conclude that this EU‐scale study of SQI provides a clear view of the soil quality status, which can also be effective for the policymakers to adopt sustainable management practices for improving soil quality.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"24 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867070","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
Revealing the Coupling Coordination of Social–Ecological System Resilience: Insights From the Southwest Karst Rural Area, China
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-21 DOI: 10.1002/ldr.5427
Shaodong Qu, Yuan Jiang, Jiangbo Gao, Lunche Wang, Qiong Chen, Yibo Zhang, Fengxian Huang
{"title":"Revealing the Coupling Coordination of Social–Ecological System Resilience: Insights From the Southwest Karst Rural Area, China","authors":"Shaodong Qu, Yuan Jiang, Jiangbo Gao, Lunche Wang, Qiong Chen, Yibo Zhang, Fengxian Huang","doi":"10.1002/ldr.5427","DOIUrl":"https://doi.org/10.1002/ldr.5427","url":null,"abstract":"Natural social systems provide opportunities for human survival, living, and development, but such development may be of less benefit to farmers in low-income and remote rural settlements because they lack money and complete infrastructure. Introducing the concept of resilience can help explore the development potential of rural areas and add vitality to the realization of high-quality rural development. Currently, theoretical analyses and systematic evaluations of rural resilience in China's karst mountain area are still insufficient. In this study, based on ecosystem services (ESs) and ecological thresholds, we calculated ecological resilience (ER). For the social systems dimension, we measured social resilience (SR) using a resilience assessment methodology developed by the FAO. Afterward, this study constructed a framework, integrating SR and ER, to assess interactions between rural socioeconomic systems and ecosystems. The study shows that SR is better in rural settlements closer to cities, while remote rural settlements have better ER. Rural settlements close to cities tend to have higher incomes and better educational opportunities than remote rural settlements. In contrast, remote rural settlements perform well in terms of forest area and natural ecology. Based on these findings, we propose specific policy measures to meet these challenges. The operational framework of this study can provide new insights and meaningful theoretical references for the study of rural resilience.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"24 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867505","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 Organic Carbon Accumulation and Stability Under Rice Straw, Ash, and Biochar Amendment in Saline-Alkali Soil
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-20 DOI: 10.1002/ldr.5442
Ya Jiang, Wenhao Zhu, Yuhang Han, Cuilan Li, Jinjing Zhang
{"title":"Soil Organic Carbon Accumulation and Stability Under Rice Straw, Ash, and Biochar Amendment in Saline-Alkali Soil","authors":"Ya Jiang, Wenhao Zhu, Yuhang Han, Cuilan Li, Jinjing Zhang","doi":"10.1002/ldr.5442","DOIUrl":"https://doi.org/10.1002/ldr.5442","url":null,"abstract":"Salinization and alkalization contribute significantly to soil degradation. Rice (<i>Oryza sativa</i> L.) cultivation is an effective approach to remediate saline-alkali soil. However, how rice straw (RS), rice straw biochar (RSB), and rice straw ash (RSA) impact soil organic carbon (SOC) accumulation and stability in saline-alkali soil remains unknown. Herein, SOC and SOC fractions contents in bulk soil and its particle- and aggregate-size classes under RS, RSB, and RSA amendments and control with amendments (CK) were investigated by field experiment. Carbon-13 nuclear magnetic resonance spectroscopy was used to evaluate bulk SOC chemical composition. The SOC and SOC fractions contents ranked as CK&lt;RSA&lt;RS&lt;RSB. Aromatic C was higher whereas O-alkyl C was lower in RSB relative to other treatments. The contents of SOC and SOC fractions in bulk soil were generally positively correlated with those in particle- and aggregate-size classes as well as with aromatic C. Redundancy analysis showed that exchangeable sodium and electrical conductivity were the most significant factors in shaping SOC contents and chemical composition. The results indicated that RSB is more beneficial for SOC accumulation and stabilization as compared to RS and RSA. The primary mechanisms of SOC accumulation in RSB-amended soil included physical protection afforded by aggregate classes, chemical protection mediated by silt and clay fractions, and biochemical protection with recalcitrant aromatic C. Our findings suggest that converting RS into RSB and the subsequent application of this biochar have the potential for improving soil quality in saline-alkali paddy field.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"268 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867506","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
Analysis of Potentials and Limitations of Safe Drinking Water in Rural Systems: A Colombian Perspective
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-20 DOI: 10.1002/ldr.5426
Ramiro Andrés Colmenares-Cruz, Nubia Zoraida Plazas-Leguizamón, Luis Alejandro Arias-Rodríguez, Nidia Milena Moreno-López, Andrea Isabel Barrera-Siabato, Jorge Armando Fonseca-Carreño
{"title":"Analysis of Potentials and Limitations of Safe Drinking Water in Rural Systems: A Colombian Perspective","authors":"Ramiro Andrés Colmenares-Cruz, Nubia Zoraida Plazas-Leguizamón, Luis Alejandro Arias-Rodríguez, Nidia Milena Moreno-López, Andrea Isabel Barrera-Siabato, Jorge Armando Fonseca-Carreño","doi":"10.1002/ldr.5426","DOIUrl":"https://doi.org/10.1002/ldr.5426","url":null,"abstract":"Considering the meaning of the hydric resource regarding the formation of territories and its connection to agriculture development, present review paper aims to analyze the actual context of rural water systems in Colombia. For this, scientific information was acquired using Scopus through the search formula: “sustainability AND aqueduct” as well as information gather from national and regional public institutions websites with the intention to stablish an international and national context using meta-analysis PRISMA method. To determine the service cycle of the search formula, information was subjected to lineal regression by considering the determination coefficient (<i>R</i><sup>2</sup>) and analyzing information taking as a reference the inflection point. Like that, each resulted document from the search were studied to then select those with grater relation towards the goals. Background information allowed to understand that aqueducts are fundamental organizations for sustainable development offering a reasonable access to clean water through its management and also showing that, regardless of existent challenges around its administration, it is necessary to implement policies that offer articulated and comprehensive solutions with participant elements as it is outlined on Colombia's National Development Plan, aiming to guarantee sustainable and equal access to water source.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"26 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867507","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
Synergy of Pollinators and Flower Strips: A Systematic Review and Bibliometric Analysis of Global Research Trends
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-20 DOI: 10.1002/ldr.5436
Juan Pablo Herrera Cerquera, Claudia Parra Cortés, Evelin Zapata Ríos, Claudia Tatiana Aroca Pulido, Arsened Vargas Guarín
{"title":"Synergy of Pollinators and Flower Strips: A Systematic Review and Bibliometric Analysis of Global Research Trends","authors":"Juan Pablo Herrera Cerquera, Claudia Parra Cortés, Evelin Zapata Ríos, Claudia Tatiana Aroca Pulido, Arsened Vargas Guarín","doi":"10.1002/ldr.5436","DOIUrl":"https://doi.org/10.1002/ldr.5436","url":null,"abstract":"The integration of pollinators and flower strips into agricultural landscapes has emerged as a key strategy for addressing current challenges in agricultural sustainability and biodiversity conservation. This study presents a comprehensive global bibliometric analysis of research trends in this field from 2009 to 2023, offering an in-depth overview of progress and remaining gaps. By reviewing 155 publications retrieved from the Web of Science (WoS) database, advanced tools such as VOSviewer and Tree of Science were used to analyze author networks, thematic dynamics, and citation patterns, identifying areas of significant impact and research growth. The results reveal a steady annual growth rate of 23.6% in scientific output, with Germany, the United Kingdom, and the United States leading the field, collectively accounting for 54.2% of the publications. More than 76.8% of these studies were published in the last 5 years, highlighting an increasing interest in incorporating flower strips as part of sustainable agricultural strategies. However, despite this progress, our analysis identifies a critical gap in understanding the long-term ecological and economic impacts of flower strips, particularly regarding their effectiveness in enhancing pollinator health and agricultural productivity. Additionally, there is a dearth of research on their adaptation and implementation in diverse geographic contexts, such as tropical and arid regions, where specific environmental conditions may influence their performance and sustainability. Most of the reviewed studies are short-term, limiting the understanding of flower strips' long-term effects on agricultural productivity and biodiversity. Additionally, there is a significant lack of research focusing on the implementation and effectiveness of flower strips in tropical and arid regions, emphasizing the need to expand the geographical scope of future studies. To maximize the potential of flower strips, we recommend developing standardized methodologies to consistently assess pollination services and encouraging interdisciplinary collaboration to address the complex interactions between agricultural practices, pollinator conservation, and ecosystem services. Beyond providing a solid foundation for future research, this analysis offers critical recommendations for the development of agricultural policies that promote biodiversity and agroecosystem resilience, thereby helping to mitigate the effects of climate change and enhance global agricultural sustainability.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"147 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857807","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
Coastal Wetlands of Indus River Delta Are Under Risk Due to Reclamation: A Spatiotemporal Analysis During the Past 50 Years From 1972 to 2022
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-19 DOI: 10.1002/ldr.5397
Yaseen Laghari, Shibiao Bai, Shah Jahan Leghari, Wenjing Wei, Abdul Hafeez Laghari
{"title":"Coastal Wetlands of Indus River Delta Are Under Risk Due to Reclamation: A Spatiotemporal Analysis During the Past 50 Years From 1972 to 2022","authors":"Yaseen Laghari, Shibiao Bai, Shah Jahan Leghari, Wenjing Wei, Abdul Hafeez Laghari","doi":"10.1002/ldr.5397","DOIUrl":"https://doi.org/10.1002/ldr.5397","url":null,"abstract":"Coastal wetlands are the most productive and biologically diverse ecosystems, benefiting both human populations and the total environment. However, they are continuously threatened by anthropogenic activities. Indus River Delta is the sixth largest in the world, has been adversely affected due to reclamation. The study examined the spatiotemporal dynamics of coastal wetlands and reclamation in the Indus River Delta from 1972 to 2022. Wetlands conversion to reclamation was extracted from 6‐Landsat images. A land cover transfer matrix was used to analyze land use land cover (LULC) changes in different time intervals. Area‐weight centroid was constructed to determine the migration trend of reclamation and coastal wetlands. Spatial accurateness was assessed using Producer's Accuracy (PA), User Accuracy (UA) and KAPPA coefficient (KC). The results reveal that from 1972 to 2022, the net area of wetlands declined by 1.9% (26.1 km<jats:sup>2</jats:sup>), while reclamation (settlement and cultivated land) increased by 14.7% (200.1 km<jats:sup>2</jats:sup>), and 27.5% (373.5 km<jats:sup>2</jats:sup>), respectively. The fastest areal change rate for coastal wetlands was −1.1 km<jats:sup>2</jats:sup>/year from 2012 to 2022, whereas the fastest areal change rate for settlement and cultivated land were 7.6 km<jats:sup>2</jats:sup>/year from 1992 to 2002 and 28.6 km<jats:sup>2</jats:sup>/year from 2012 to 2022. Centroids of wetlands moved slowly eastwards from Kharo Chan taluka to Keti Bandar in the first and third decades, then southwards in the second decade, later on, westwards in the fourth decade, and finally back southwards from Keti Bandar taluka to the Kharo Chan in the fifth decade with fastest movement. Centroids of settlement expanded in all directions over five decades. Centroids of cultivated land migrated westwards in the first, third and fourth decades, northwards in the second decade and southwards in the fifth decade from Keti Bandar to Kharo Chan. The findings of this study provide a scientific basis for sustainable land development and future planning.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"123 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849141","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
Assessing Carbon Sequestration Potential of Check Dams in the Helong Region of the Chinese Loess Plateau
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-18 DOI: 10.1002/ldr.5433
Xiang Zhang, Huaxin Cao, Jiayu Liu, Xinjuan Zheng, Dongli She
{"title":"Assessing Carbon Sequestration Potential of Check Dams in the Helong Region of the Chinese Loess Plateau","authors":"Xiang Zhang, Huaxin Cao, Jiayu Liu, Xinjuan Zheng, Dongli She","doi":"10.1002/ldr.5433","DOIUrl":"https://doi.org/10.1002/ldr.5433","url":null,"abstract":"Check dams are widely recognized as highly efficacious engineering interventions for preventing soil erosion, and they have been extensively promoted and employed worldwide. However, there is a dearth of comprehensive research on the carbon storage and carbon sequestration potential of check dams, impeding our understanding of carbon fate in sedimentary regions of terrestrial systems. The goal of this study is to evaluate the carbon storage and carbon sequestration potential of check dams within the Helong Region (HLR), utilizing measured data from subcatchments and collected key dam data. The results indicated that the horizontal distribution characteristics of organic carbon (OC) in the seven subcatchments within the Yanhe catchment exhibited a gradually increasing trend from upstream to downstream. The vertical distribution of OC content can be categorized into three patterns: initial decrease followed by fluctuation, initial decrease followed by fluctuating increase, and sudden increase followed by stability. The variation range of OC stored in the dam land was 1.47–598.21 Mg, and there existed a strong quadratic relationship between OC storage and the dam land area. The HLR encompasses a total of 3703 key dams, with a combined storage capacity of 39.89 × 10<sup>8</sup> m<sup>3</sup> and controlling an area of 17951.6 km<sup>2</sup>. As of 2011, the sediment load and OC buried in key dams within the HLR were estimated to be 24.98 × 10<sup>8</sup> t and 6385.98 Gg, respectively. Assuming complete filling of all key dams, the estimated carbon sequestration potential of the key dams amounted to 6869.41 Gg. The research findings can provide a theoretical foundation for comprehending carbon redistribution and carbon sequestration in the erosion–deposition environment of terrestrial systems.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"93 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849608","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
Land Use Conflicts Identification and Multi‐Scenario Simulation in Mountain Cities, Southwest China: A Coupled Structural and Functional Perspective
IF 4.7 2区 农林科学
Land Degradation & Development Pub Date : 2024-12-18 DOI: 10.1002/ldr.5440
Weijie Li, Jinwen Kang, Yong Wang
{"title":"Land Use Conflicts Identification and Multi‐Scenario Simulation in Mountain Cities, Southwest China: A Coupled Structural and Functional Perspective","authors":"Weijie Li, Jinwen Kang, Yong Wang","doi":"10.1002/ldr.5440","DOIUrl":"https://doi.org/10.1002/ldr.5440","url":null,"abstract":"Land use conflicts (LUCs) arise during land use change, causing an uncoordinated spatial structure of the land and negatively affecting the synergistic development of multifunctionality, especially in mountain cities. Previous studies have focused on identifying and measuring land use structural conflicts (LUSC), with less attention paid to land use functional conflicts (LUFC), and a lack of simulation for future multi‐scenarios. Thus, taking Chongqing as an example, based on the perspective of LUSC–LUFC coupling, this study constructed a comprehensive conflict index to identify and assess LUCs, then applied the PLUS model to predict LUCs under three development scenarios in 2030. This study found that (1) there was a significant positive spatial association between LUSC and LUFC, with high–high agglomeration types in areas of severe LUCs and low–low agglomeration types in areas of light LUCs. (2) During 2000–2020, the LUCs in Chongqing displayed a trend of upward and then downward from 2000 to 2020, with significant agglomeration in their spatial pattern. (3) Two typical areas of LUCs intensification were identified, namely the topographic transition zone located in the Daba and Wuling mountains and the urban–rural interface in the Chongqing metropolitan area. (4) In 2030, the LUCs in Chongqing manifest an overall mitigation in the ecological protection (EP) scenario, while displaying an intensification in the natural development (ND) and economic development (ED) scenarios. Based on the types of spatial interaction between LUSC and LUFC, land use optimization strategies were formulated. The findings will provide scientific references for sustainable land use management decisions in Chongqing and other mountainous cities.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"23 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841507","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
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