Land Degradation & Development最新文献

{"title":"Assessment and Multiscenario Simulation of Land Use and Ecosystem Services Interactions in Inner Mongolia","authors":"Zhen-Zhong Dai, Sen Chang, Zhi-Yuan Zhu, Jia-Jia Duan, Tian-Yu Jiang, Wen-Qiang Wu, Yong-Zhong Feng, Gai-He Yang, Xing Wang","doi":"10.1002/ldr.5319","DOIUrl":"https://doi.org/10.1002/ldr.5319","url":null,"abstract":"Balancing land development and ecological protection poses significant challenges for sustainable development in arid and semi-arid regions like Inner Mongolia. This study uses the integrated valuation of ecosystem services (ESs) trade-offs model and patch-generated land-use simulation model to analyze the impacts of land-use/cover (LULC) changes on ESs from 2005 to 2020 and simulate scenarios for 2035. The results show that (1) ecological governance efforts improved the comprehensive ecological index (CEI), habitat quality, and soil conservation capacity but led to a decrease in the annual water yield (AWY) in the eastern region. Additionally, the conversion of grassland and forest land to construction land and farmland caused slight declines in carbon sequestration and increased nitrogen export. (2) The external driving factors of different ESs vary, and the internal relationships within ESs have also changed. Notably, changes in LULC transformed the synergy between AWY and habitat quality into a trade-off relationship after 2010 due to increased forest and grassland. (3) Among the five land-use scenarios, the comprehensive development scenario combined with zonal management strategies can achieve the sustainable development goals of economic growth, ecological protection, and food security. This study clarifies the internal and external factors affecting ESs in Inner Mongolia and provides a scientific basis for future LULC management and ecological governance policies. It fills a gap in the spatiotemporal simulation of ESs under multiple scenarios in this region. These findings offer valuable references for promoting sustainable development in similar arid and semi-arid regions, highlighting the importance of integrating multi-objective strategies and adaptive management practices to balance ecological and economic objectives.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"24 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142486514","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}

{"title":"Innovative and Cost‐Effective Approaches to the Measurement of Sediment Levels in Small Water Reservoirs","authors":"Stanislav Paseka","doi":"10.1002/ldr.5341","DOIUrl":"https://doi.org/10.1002/ldr.5341","url":null,"abstract":"Sedimentation in small water reservoirs poses a critical challenge with significant environmental, economic, and social implications. To address this issue, this study will employ three measurement techniques—GNSS RTK Trimble R8s, Echolot HDS LIVE 7 with Active Imaging 3‐in‐1, and the Mivardi Carp Scout bait boat—to assess sediment levels in Žebětínský Pond in Brno, Czech Republic. The research reveals that each method offers distinct advantages and limitations. Through measurement and triangulated networks, the study creates a digital terrain model that facilitates the determination of reservoir volume and sediment levels. The comparison shows that the cost‐effective alternatives, Echolot HDS LIVE 7 and Mivardi Carp Scout, provide sufficiently accurate results. The evaluation shows that while the GNSS RTK Trimble R8s has the highest level of accuracy and is unique in its ability to measure both along the shoreline of the reservoir and the hard bottom, it comes with increased costs and logistical challenges. The Echolot HDS LIVE 7 and Mivardi Carp Scout offer efficient, cost‐effective solutions that are suitable for a quick estimate of sediment thickness. This research contributes to the use of reliable mathematical models and water management strategies, advocating for a pragmatic approach to the selection of methods based on the project characteristics. The study provides valuable insights into sediment measurement techniques, guiding future endeavors in reservoir management and environmental conservation. It is also used to easily indicate the loss of arable land in the catchment upstream of the reservoir.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"9 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142487451","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}

{"title":"Assessing the Effectiveness of Different Kinetic Models in Simulating the Soil Nitrification Process of Ammonium Fertilizers","authors":"Jianyu Tao, Xiaoyuan Liu","doi":"10.1002/ldr.5354","DOIUrl":"https://doi.org/10.1002/ldr.5354","url":null,"abstract":"Precise estimation of the soil nitrification process of ammonium fertilizers is crucial to improving soil fertility and reducing environmental pollution since nitrification is closely related to ammonia volatilization and nitrate leaching. However, the applicability and effectiveness of different kinetic models in simulating the soil nitrification process have not been systematically evaluated in previous studies. Here, we compared the effectiveness of one self-established model (T-function) and three commonly-used kinetic models (L-function, zero-order kinetic model, and first-order kinetic model) using data extracted from peer-reviewed publications. Results showed that the average determination coefficients (<i>R</i>²) of the T-function and L-function were 3% higher than that of the first-order kinetic model, while the average root mean square errors (RMSE) of the T-function and L-function were 30% lower than that of the first-order kinetic model. In addition, first-order kinetic model could not function properly when it was applied to simulate linear data. Zero-order kinetic model was not suitable for predicting soil nitrification process because its mathematical nature was inconsistent with the actual soil nitrification process. Further investigations of the parameters of the T-function and L-function revealed that p1 (parameter 1) represented the soil net nitrate production of the applied N fertilizer, while p1 × p3 represented the soil nitrification rate. The response of the parameters of the T-function was more sensitive to soil pH, TN, and C/N ratio changes than those of the L-function. Therefore, the T-function is slightly more accurate than the L-function, but it requires more data points to achieve the best performance. In general, T-function and L-function are the most suitable models for simulating the soil nitrification process of N fertilizers and have the potential to be incorporated into soil N cycling models.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"235 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142488749","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}

{"title":"Innovative Tillage Practices to Establish Productive and Sustainable Forage Production Systems in Degraded Alfalfa Pastures in Semiarid Regions","authors":"Bin Wang, Jianqiang Deng, Tengfei Wang, Haiying Hu, Samaila Usman, Jian Lan","doi":"10.1002/ldr.5332","DOIUrl":"https://doi.org/10.1002/ldr.5332","url":null,"abstract":"Tillage management practices play a critical role in maintaining sustainable forage production systems in degraded alfalfa (<i>Medicago sativa</i> L.) pastures. However, climate change leads to the precipitation exhibits greater variability, the impacts of tillage practices on alfalfa productivity and forage quality as well as the relationships between water consumption and soil properties remain poorly understood. The field trial conducted from 2018 to 2020 aimed to investigate the impacts of different tillage treatments (i.e., no tillage [CK], strip subsoiling tillage [ST], strip rotary tillage [RT], and strip rotary tillage after strip subsoiling [SRT]) on soil properties, water use efficiency (WUE), and forage productivity. Compared with CK, tillage practices significantly increased forage biomass and crude protein yield (CPY), particularly in the case of the SRT treatment, in which the increase was 20.8% and 25.3% higher, respectively (<i>p</i> &lt; 0.05). Meanwhile, the net income in the SRT treatment exhibited the greatest value (US $1922.0 ha⁻¹), showing a 17.0% increase compared with that in the CK treatment. The relationship of soil structure and crop water consumption became evident when tillage practices were applied in the degraded alfalfa pasture. The soil bulk density under the ST, RT, and SRT treatments decreased by 6.9%, 5.4%, and 8.6%, whereas the soil porosity increased by 8.6%, 6.7%, and 10.7% in the 0–60 cm soil layer, respectively (<i>p</i> &lt; 0.05). Furthermore, the soil water content at a depth of 0–60 cm increased by 12.1% in the SRT treatment compared with the CK treatment at the harvesting stage, and the SRT treatment obtained the highest WUE of dry matter (16.9 kg ha⁻¹ mm⁻¹) and precipitation use efficiency of dry matter (15.8 kg ha⁻¹ mm⁻¹). In addition, total nitrogen in the ST, RT, and SRT treatments increased significantly by 21.4%, 11.1%, and 27.0%, respectively, and soil organic carbon in the ST, RT, and SRT treatments also increased significantly by 5.5%, 3.3%, and 10.4%, respectively, compared with those in the CK treatment (<i>p</i> &lt; 0.05). Our study has demonstrated that tillage practices can optimize soil structure, improve water utilization, and increase soil fertilizer for enhancing forage productivity. The SRT practice could be a preferable approach for sustainable agricultural production of degraded alfalfa grassland in the semiarid region of China.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"2 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142486392","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}

{"title":"Artificial Grassland Revegetation Improves Soil Water Retention and Storage Capacity of the Degraded Hillside Alpine Meadow","authors":"Yulei Ma, Lingchao Meng, Yifan Liu, Juan Pinos, Zhihua Shi, Gao-Lin Wu","doi":"10.1002/ldr.5349","DOIUrl":"https://doi.org/10.1002/ldr.5349","url":null,"abstract":"The crucial role of soil water retention and storage in soil hydrology and the water cycle is well established. However, in sensitive and degraded ecosystems like alpine meadows, the effectiveness of revegetation in enhancing these critical functions remains understudied. This study investigates the effects of revegetating severely degraded hillside meadows with artificial grasslands on soil water retention and storage capacity in the Qinghai-Tibetan Plateau. Soil analyses at a depth of 0–20 cm revealed significant improvements in soil properties after revegetation, with increases in soil organic matter content (86.8%), total porosity (11.9%), capillary porosity (31.6%), and clay content (13.5%). Both the saturated hydraulic conductivity (<i>Ks</i>) and field capacity (FC) increased markedly, by 9.7% and 63.7% in the upper layer (0–10 cm) and 21.7% and 69.6% in the lower layer (10–20 cm), respectively. Structural equation modeling identified bulk density, root mass density, FC, capillary porosity, and clay content as the dominant direct factors influencing <i>Ks</i> with path coefficients of −0.56, 0.30, −0.53, 0.57, and −0.12, respectively, while vegetation cover and aboveground biomass were found to have indirect influences. These findings demonstrate that revegetation with artificial grasslands effectively improves soil water retention and storage capacity in degraded hillside alpine meadows by regulating key soil hydraulic and physical properties. This enhanced water-holding capacity has significant implications for understanding the dynamics of revegetation by artificial grassland establishment in improving ecosystem health and eco-hydrological functions in these vulnerable environments. Furthermore, the study provides valuable insights and a theoretical basis for developing ecological restoration solutions for degraded hillside meadows in other alpine regions.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"40 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142486473","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}

{"title":"Soil Erosion Under Climate and Land Use Changes in China: Incorporating Ecological Policy Constraints","authors":"Yi Zhang, Yi Zeng, Renjie Zong, Nufang Fang","doi":"10.1002/ldr.5353","DOIUrl":"https://doi.org/10.1002/ldr.5353","url":null,"abstract":"Projections of soil erosion under climate and land use changes are pivotal for optimizing soil conservation strategies. Ecological policies are thought to influence future land-use changes and associated soil erosion dynamics. However, these policies are inadequately incorporated into projections, leaving the future trajectory of soil erosion still unclear. China's ecological redline policy (ERP) is among the first national policies to integrate multiple ecosystem services into land use planning, preventing anthropogenic soil erosion on over 25% of the territory. Therefore, focusing on China, three alternative Shared Socioeconomic Pathway and Representative Concentration Pathway scenarios (SSP1-2.6, SSP3-7.0, and SSP5-8.5) were coupled with future-oriented ERP to reflect future soil erosion patterns by the late-21st century. Projections rely on an integrated multi-model approach. The conducted analysis suggests that climate change is projected to exacerbate soil erosion by 12.06%–36.90% due to increased precipitation, characterized by high-intensity events. Land use change is projected to mitigate or even reverse the climate-induced increase in soil erosion. The combined climate and land use simulations showed that the annual average soil erosion rate will increase by 26.36% under the SSP5-8.5 scenario, while it will decrease by 8.08% and 14.94% under the SSP1-2.6 and SSP3-7.0 scenarios, respectively. The implementation of ERP reduces potential soil erosion by 4.08%–14.89% (equal to 0.31–0.86 Gt year⁻¹ soil loss) in the late-21st century, particularly in scenarios with intensive conflicts between population and land sources. This study provides a valuable reference for the formulation of national strategies aimed at controlling soil loss accelerated by climate change.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"18 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142486390","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}

{"title":"The Inhibitory Tendency of Calamagrostis epigejos and Solidago spp. Depends on the Successional Stage in Postindustrial Vegetation","authors":"Quadri A. Anibaba, Marcin K. Dyderski, Gabriela Woźniak, Andrzej M. Jagodziński","doi":"10.1002/ldr.5348","DOIUrl":"https://doi.org/10.1002/ldr.5348","url":null,"abstract":"In spontaneously vegetated postindustrial areas, we have limited knowledge of whether the known inhibitory tendencies of herbaceous species—<i>Calamagrostis epigejos</i> and <i>Solidago</i> spp.—vary across successional stages. Our study fills this knowledge gap to assess the inhibitory role of the invasive alien and expansive native species with known behavior from the literature. Specifically, we hypothesized: (i) there will be an inhibitory effect of these species on diversity across successional classes; (ii) the effect of a species will depend on the successional class due to abiotic requirements of plant communities in each successional class. We recorded vascular plant species and their abundance across 400 plots on post-coal mine heaps in Upper Silesia, Poland. We classified spoil heaps into three successional classes (early-stage; mid-stage; late-stage). We calculated plant community taxonomic, functional, and phylogenetic diversity and, using generalized linear mixed-effects models, we estimated predictors of diversity indices across successional classes. While we found no limiting effects of these species on diversity indices across successional classes, the effects of a species depended on the successional stage. We found the impacts of <i>Calamagrostis</i> and <i>Solidago</i> cover on diversity indices in the mid-successional stage. This implies that the early-successional stage is controlled by the lottery (random) model of community assembly. However, in the mid-successional stage, the competitive exploitation mechanism is evident, resulting in declines in diversity indices. Thus, the impacts of <i>Calamagrostis</i> and <i>Solidago</i> on diversity indices are evident in the mid-successional stage.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"17 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451938","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}

{"title":"Winter Grazing, Not Fencing or Unicast, Promotes Stability of Microbial Community and Function in the Qilian Mountains of Qinghai‐Xizang Plateau","authors":"Sichen Pan, Caiyun Luo, Xin Chen, Dongdong Chen, Qi Li, Fuquan He, Yukun Zhang, Li Zhang, Liang Zhao","doi":"10.1002/ldr.5330","DOIUrl":"https://doi.org/10.1002/ldr.5330","url":null,"abstract":"In alpine meadows, microorganisms are essential to sustain the stability of terrestrial geochemical processes and vegetation–soil–microbial systems. The present study in order investigate how various management measures impact the microbial communities' composition and functionality, we utilize metagenomic sequencing techniques to examinate the composition and function of soil microbial communities in the southern Qilian Mountains of the Qinghai‐Xizang Plateau in response to the management practices of fencing enclose (FE), winter grazing (WG), transition zone between natural and artificial grasslands (TZ), and artificial unicast oats (AU). Vegetation diversity and soil physicochemical characteristics were dramatically altered by the management measures. The prokaryotic community structure was considerably similar in FE and WG, as well as in TZ and AU. Near‐natural (FE) and artificial establishment (AU) disturbances changed the fungal community structure. Enzymes related to carbon metabolism did not respond significantly to the management measures, whereas those related to nitrogen metabolism did not respond significantly in TZ and AU. The relative abundance of enzymes participating in nitrogen metabolism was higher under TZ and AU than under FE and WG. We concluded that grassland management measures altered the structure of aboveground graminoid and leguminous vegetation communities and belowground biomass allocation, resulting in changes in K uptake, causing striking changes in the structure of fungal communities and nitrogen‐metabolizing enzymes; moderate disturbance (WG) was beneficial for maintaining the stability of microbial communities in alpine grasslands.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"75 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142486642","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}

{"title":"Variability of PAH Patterns in Upper Forest Soil (Sub)horizons—A Case Study From South-Central Poland","authors":"Sabina Dołęgowska, Agnieszka Sołtys, Karina Krzciuk, Dariusz Wideł, Artur Michalik","doi":"10.1002/ldr.5346","DOIUrl":"https://doi.org/10.1002/ldr.5346","url":null,"abstract":"Polycyclic aromatic hydrocarbons (PAHs) are a class of contaminants characterized by their persistent and toxic nature. This study examines the variability in PAH distribution patterns in the upper layers of forest soils, focusing on the influence of different characteristics of individual soil (sub)horizons. A total of 130 samples were collected from five forest areas in south-central Poland and analyzed for the 16 priority PAHs. Samples were taken from the organic fermentative-humic (Ofh), humic (A), and humic-eluvial (AE) (sub)horizons. The highest mean concentrations of total PAHs were found in the subhorizon-Ofh (Ofh—1547 μg kg⁻¹, A—1103 μg kg⁻¹, AE—109 μg kg⁻¹). The PAH content was significantly correlated with SOM content and pH, but this correlation was only significant in the horizon-A. The percentage contributions of 3-, 4-, 5-, and 6-ring compounds to the total PAHs varied among the investigated soil (sub)horizons. The subhorizon-Ofh had the highest percentage contribution of 6-ring PAHs, 4- and 5-ring PAHs were most prevalent in the horizon-A, while 3-ring compounds in the horizon-AE. The variability in PAH patterns was also reflected in individual PAH ratios (BaA/BaA+Chr, IcdP/IcdP+BghiP), confirming the different behavior of 4-, 5-, and 6-ring compounds in these (sub)horizons. This suggests that the retention of PAHs in the investigated (sub)horizons is influenced by several factors, including pH, degree of SOM decomposition, and mineral fraction, each to a different extent. Our findings reveal significant knowledge gaps regarding the behavior and accumulation of PAHs in soil (sub)horizons, underscoring the need for further research.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"209 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451936","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}

{"title":"Cultivated Land Quality Assessment and Obstacle Factors Diagnosis in Changtu County, Northeast China","authors":"Fengkui Qian,&nbsp;Siyu Jiao,&nbsp;Yuanjun Yu,&nbsp;Xiangguo Wang,&nbsp;Tianyi Shao","doi":"10.1002/ldr.5278","DOIUrl":"10.1002/ldr.5278","url":null,"abstract":"<div>\u0000 \u0000 <p>Effective evaluation of cultivated land quality is crucial for sustainable agricultural management. Existing research often focuses on regional scales and lacks sufficient detailed analysis of spatial distribution and limiting factors at localized scales. This study aims to select the key indicators to evaluate cultivated land quality and analyze their influence on cultivated land quality at the county level. Taking Changtu County as the research area, principal component analysis (PCA) was employed to identify the most effective Minimum Data Set (MDS) for evaluation, including cultivated layer thickness, soil organic matter (SOM), pH, bulk density (BD), and cultivated layer texture. Additionally, an obstacle degree model was used to analyze restricting factors and their degrees of impact. Results showed that the constructed MDS could replace all indicators for cultivated land quality evaluation. Quality was higher in central areas and lower in eastern and western regions. SOM content decreases with the decrease of quality grade, significantly affecting the quality distribution, and pH in the medium category (Grades III and VI) cultivated lands were lower compared to other categories. Low organic matter content and low pH levels were the main obstacles affecting cultivated land quality, with average obstacle degrees of 43.5% and 29.3%, respectively. Low SOM content significantly affected land quality, particularly in the western region, whereas acidic soils in the eastern region influenced quality grade distribution. Thus, strategies for pH control and SOM enhancement are essential for improving cultivated land quality. This study provides valuable insights into sustainable agriculture.</p>\u0000 </div>","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"35 17","pages":"5065-5077"},"PeriodicalIF":3.6,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451942","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}