Land Degradation & Development最新文献

{"title":"Impacts of Grassland Use Types on Soil Ciliate Communities in the Northeastern Qinghai-Tibetan Plateau","authors":"Fengchu Wang, Asim Biswas, Jan F. Adamowski, Jianjun Cao, Xiaofang Zhang","doi":"10.1002/ldr.5502","DOIUrl":"https://doi.org/10.1002/ldr.5502","url":null,"abstract":"Soil ciliates, crucial components of grassland ecosystems, serve as sensitive bioindicators of soil health and disturbance. This study investigates ciliate communities across four grassland use types in the northeastern Qinghai-Tibetan Plateau (QTP): seasonal and continuous grazing in natural grasslands (SGG and CGG, respectively), artificial perennial <i>Elymus nutans</i> Griseb. grasslands (PEG) for seasonal grazing, and artificial annual <i>Avena sativa</i> L. grasslands (AAG) for forage. Using live observation techniques, we identified 114 ciliate species from 10 classes and 21 orders, with <i>Haptorida</i> and <i>Sporadotrichia</i> emerging as dominant groups. Our findings revealed that the grazed grasslands harbored greater endemic ciliate species richness compared with AAG. SGG and CGG exhibited significantly higher ciliate diversity than other types, while PEG and SGG supported higher ciliate abundances. Low Jaccard similarity indices between grassland use types indicated distinct ciliate communities, reflecting management-induced environmental heterogeneity. Redundancy analysis identified above-ground biomass and soil pH as primary drivers of ciliate community structure. Notably, SGG promoted the highest ciliate diversity, suggesting its potential as a sustainable management practice for maintaining soil health in the QTP. This research provides crucial insights into the relationship between grassland management and soil ciliate diversity in high-altitude grasslands. Our findings support the implementation of moderate grazing practices to enhance soil quality and ecosystem resilience in the QTP, with implications for sustainable management of similar ecosystems worldwide.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"16 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385831","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":"Characteristics and Framework for Assessing Supply and Demand Relationship for Ecosystem Services Using a Trade-off and Synergy Lens","authors":"Jinxin He, Yan Zhou, Rajiv Pandey, Lindsay C. Stringer, Yingui Cao, Honey Bhatt, Rongliulian Luo, Shufei Wang, Tong Li, Shengpeng Li","doi":"10.1002/ldr.5484","DOIUrl":"https://doi.org/10.1002/ldr.5484","url":null,"abstract":"Ecosystem services (ESs) are a pivotal interface between ecological and societal systems. Comprehending the balance between what nature offers and society demands is indispensable for fostering human prosperity. This study seeks to fill the gaps in existing knowledge, including inconsistencies in terminology, limited exploration of driving mechanisms, and the lack of a comprehensive management strategy framework in ES supply and demand research. The article comprehensively reviews the conceptual connotations and assessment methods related to ES supply and demand. The paper delves into the specific traits of studies examining the interplay between supply and demand, focusing on relationship identification, driving mechanisms, threshold effects and management strategies. And the review articulates a theoretical framework to examine the interplay of ES supply and demand as well as emphasises directions for further research. The results show that: (1) a unified definition for ES supply and demand has yet to be agreed upon. The critical part played by humans in ES supply is often neglected, and there is a corresponding scarcity of demand evaluations for such services. (2) Previous research has identified trade-offs and synergies, analysed underlying forces and threshold effects, and proposed management strategies for the dynamics between ES supply and demand based on quantitative assessment. (3) Prospectively, the beneficiaries need to be considered more. Additional research is required to explore in-depth the underlying processes of multi-scale ES supply and demand. Adaptive management provides opportunities for ecosystem management.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"50 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385830","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":"Optimal Level of Straw Addition After the Autumn Harvest for Black Soil Aggregate Stability","authors":"Yu Li, Yu Fu, Jinzhong Xu, Chen Zhang, Yupeng Zhang, Hanzhe Lei, Xiaoya Zhang","doi":"10.1002/ldr.5514","DOIUrl":"https://doi.org/10.1002/ldr.5514","url":null,"abstract":"In Northeast China, straw residues are integrated into fields to improve the soil structure and fertility after the autumn harvest. However, the optimal amount of straw addition is unclear. To determine whether an increase in straw addition is correlated with an increase in soil aggregate stability, the study focused on black cropland soil and was conducted through field incubation experiment (lasting 150 days) during seasonal freeze–thaw periods, implemented six different straw treatments: CK (0%), SA1 (1%, i.e., 10 g of straw per kg of soil), SA3 (3%), SA5 (5%), SA7 (7%), and SA9 (9%). The results revealed that under freeze–thaw conditions, aggregate stability significantly increased only when the straw addition amount was ≥ 5%. At this straw addition level, straw residues enhanced aggregate stability in two ways. First, the straw decomposition significantly increased SOC content, which serves as a binding substance for aggregates and promotes the formation of aggregates &gt; 0.25 mm. Second, straw particles combined with soil particles to form straw-soil composite macro-aggregates that exhibited high water stability. However, aggregate stability was not positively correlated with the straw addition amount. This was because 5% straw addition was sufficient for the soil to reach carbon saturation, and the SOC content showed no significant change with further increasing straw addition. Moreover, excessive straw addition not only led to nitrogen limitation and slowed down the straw decomposition rate but also wasted straw resources. Therefore, 5% straw addition is optimal for improving soil aggregate stability. These findings provide a theoretical basis for how to improve the soil structure and fertility through the rational design of autumn straw return measures, thereby improving soil conditions for spring sowing and seedling emergence in Northeast China.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"63 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385829","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":"Quality Indicators to Subsidize Soil Conservation Under Pasture in Brazil","authors":"Adriana Monteiro da Costa, Luís Filipe Sanches Fernandes, Fernando António Leal Pacheco, Carlos Alberto Valera","doi":"10.1002/ldr.5504","DOIUrl":"https://doi.org/10.1002/ldr.5504","url":null,"abstract":"The management of cultivated areas has been the subject of scientific and political debate because of its adverse effects on soil health and associated ecosystem services. A route to bring degraded cultivated areas back to sustainable production systems includes implementing adequate management practices and, in parallel, monitor their results. Monitoring must be based on the periodical evaluation of soil quality indicators. The selection of indicators is, however, a challenge, because suited indicators must be simultaneously rigorous and practical to assess in the field. Thus, the aim and novelty of this study was to summarize soil quality indicators dispersed in the scientific literature, and propose an assortment of those capable of being used in soil conservation policies and management plans considering the aforementioned requisites. To our best knowledge, this kind of exhaustive summary with focus on policy and management is lacking. To accomplish the proposed goal, a systematic literature review was carried out using the Scopus database. The selection of articles followed the guidelines of PRISMA methodology (Preferred Reporting Items for Systematic Reviews and Meta-Analyses). The results revealed that, indicators such as organic carbon, soil structure assessments, and erosion monitoring are practical for public policy due to their cost-effectiveness and ease of field application. Besides, they are suited for evaluation through technologies like remote sensing and portable sensors. Additional results from the review exposed that the current understanding of soil quality across the various Brazilian biomes is limited by geographic and methodological biases in the existing studies, and that it is essential to invest in infrastructure, methodological standardization and stakeholder training to fill in those gaps. Finally, the present review emphasized the need to conduct future studies based on interdisciplinary collaboration, as measure to reach a common language a view over how to assess and use indicators as proxies of soil quality and health, and ultimately to promote sustainable land use and soil conservation in Brazil.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"16 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143385832","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":"A Quantitative Comparison of Conventional and Conservation Tillage of Diverse Agro-Ecologies","authors":"C. P. Nath, T. K. Das, Suman Sen, B. Duary, Sourav Ghosh, P. K. Ghosh, A. R. Sharma, Debarati Datta, Arpita Nalia, Narendra Kumar, Raghavendra Singh, Ranjan Bhattacharyya, Ravi Gopal Singh, K. K. Hazra, Himanshu Pathak","doi":"10.1002/ldr.5511","DOIUrl":"https://doi.org/10.1002/ldr.5511","url":null,"abstract":"A detailed insight on global yield change of crops, soil quality parameters, and water-nutrient-energy nexus and biotic factors under conservation tillage (CT) in comparison to conventional tillage (CONT) is limited. We summarized the impacts of CT on yields, profitability, soil quality, and ecosystem sustainability in comparison to CONT. Globally, average yields of crops increased by 3.7% (<i>p</i> &lt; 0.05) with adoption of CT (&gt; 3 years) compared to CONT. The CT has led to a significant improvement in crop productivity in North America (+6.2%) and Australia/Oceania (+21.4%) over CONT. Similarly, positive changes in yields with CT, although nonsignificant, were noted in Asia, South America, Europe, and Africa. The CT significantly increased the yields (+4.0%) of cereal crops. Among the crops, yield increase under CT was the highest for sorghum (110.1%) and lowest for soybean (1.3%). Adoption of CT for &gt; 10 years (11–20 years) could increase yields of crops up to 6%–18%. Notably, CT resulted in improved soil aggregation with greater proportion of macroaggregates (+40%), soil organic carbon (+19.1%), and microbial biomass carbon (+44%) across diverse ecologies over CONT. Despite higher emissions of nitrous oxide, the net global warming potential was consistently lower in CT-based systems than CONT. The CT could result in 25% increase in mean grain yield of crops with 22% higher net returns and 27% energy saving across regions than CONT. The CA can reduce soil bulk density (by 6.2%), increase aggregate stability (by 30%), and enhance infiltration rate (by 53%) as compared with CONT over a large agro-ecologies.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"162 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143371530","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":"Reassessing Soil Wind Erosion in Arid Regions of Central Asia: Fully Considering the Contribution of Non-Photosynthetic Vegetation (NPV)","authors":"Xiaofei Ma, Huili He, Tianci Huo, Yuan Su, Wei Yan","doi":"10.1002/ldr.5512","DOIUrl":"https://doi.org/10.1002/ldr.5512","url":null,"abstract":"Wind erosion refers to wind transport of fine particulate matter and nutrient-rich materials. This form of erosion can have a considerable impact on the ecological environment and human health. Regional wind protection and sand fixation are considered to be major ecosystem services in arid zones. Previous applications of wind erosion assessment models in arid zones applied green vegetation as the main model parameter. However, there has been little consideration of the role of Non-Photosynthetic Vegetation (NPV) on wind erosion, which is widely distributed in arid zones. Therefore, this study reconstructed a soil wind erosion model (WEM) applicable to the arid zone of Central Asia by quantitatively assessing regional NPV and coupling NPV with the Revised Wind Erosion Equation (RWEQ) model based on the cusp mutation model. The results showed that NPV significantly reduced wind erosion in northern and central Kazakhstan from 2001 to 2020. The adequate consideration of NPV resulted in a reduction in simulated wind erosion in Central Asia by 400 t km⁻² per year. NPV had the greatest effect on wind erosion in spring and autumn, whereas it had least effect in winter, mainly due to the coverage of NPV and the seasonality of wind erosion. Regions showing a positive correlation between temperature and wind erosion were mainly located in northern Kazakhstan with a high coverage of NPV. Precipitation showed a negative correlation with wind erosion. Incorporation of NPV into the RWEQ model improved the accuracy of simulated wind erosion in Central Asia by 8.2%. The proposed method can support mitigation of wind erosion hazards and the improvement of the ecological environment in arid regions of Central Asia. This study can also act as a reference for improving the accuracy of large-scale simulation of wind erosion.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"16 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143371582","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":"Adjusted ∆NBR Index Thresholds for Forest Fire Severity Mapping: A Study in Central Amazonia","authors":"Camila Julia Pacheco Ramos, Paulo Maurício Lima de Alencastro Graça, Philip Martin Fearnside","doi":"10.1002/ldr.5466","DOIUrl":"https://doi.org/10.1002/ldr.5466","url":null,"abstract":"The 2006 study of fire severity in coniferous forest by Key and Benson derived threshold values of the Delta Normalized Burn Ratio (∆NBR) for interpreting satellite imagery of fire scars, and ∆NBR has been widely used for forest fire severity worldwide. We hypothesized that these thresholds underestimate the severity of fires of tropical forests. Our goal was to find appropriate thresholds to map fire severities in the central Amazon and evaluate trends in recent years. These forests are increasingly threatened by deforestation, severe droughts and wildfires. We adjusted the ∆NBR decision thresholds using new methods that are relatively fast and cheap, with a combination of field data, hemispherical photographs of the opening of the forest canopy with different fire severities, and the use of Landsat data for fires that occurred in 2015 images. The agreement between the classification of severity in the field and the classification by the adjusted ∆NBR thresholds was satisfactory (overall accuracy = 74.2%; Kappa coefficient = 0.635). Using the Key &amp; Benson thresholds resulted in a Kappa value of only 0.184, and the severity classification would be underestimated. We applied the new threshold values to map forest fire severity in the central Amazon from 1995 to 2017. The year 2015 had the greatest area of fire, of which 60.7% was classified as moderate, 19% as high, and 20% as low severity. The results corroborate the importance of adjusting decision thresholds for each study area to classify fire severity using ∆NBR.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"40 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143191742","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":"Changes in Soil Properties, Organic Carbon, and Nutrient Stocks After Land‐Use Change From Forests to Grasslands in Kumaun Himalaya, India","authors":"Archana Fartyal, Surendra Singh Bargali, Kiran Bargali, Bhawna Negi","doi":"10.1002/ldr.5507","DOIUrl":"https://doi.org/10.1002/ldr.5507","url":null,"abstract":"Land‐use changes are anticipated to be a substantial contributor to global change climate, substantially causing significant modifications in soil characteristics. This study addressed the impact of land‐use change from native forests to grasslands on the soil physico‐chemical properties in entirely replicated grasslands of three different forest zones (Oak, Pine and Cypress) in temperate region of Kumaun Himalaya. A total of 162 soil samples (6 sites × 3 plots × 3 seasons × 3 depths = 162 samples) were randomly collected from each site in triplicates from depths. The soil texture, bulk density (bD), porosity, water holding capacity, soil moisture content, pH, organic carbon (SOC), total nitrogen (TN), available phosphorus (P) and available potassium (K) were determined at different depths in forest and grassland sites. Results showed that soil bD, pH, SOC, TN, P and K significantly (<jats:italic>p</jats:italic> &lt; 0.05) decreased with increasing depth. Moreover, conversion of forests into grassland reduced nutrient concentrations, physical qualities (bD and porosity), and pH levels. The decreasing trend of nutrient along the soil depth explains that the zone of nutrient accumulation is not well established in these grasslands because of the substantial leaching effect. Our findings indicate that conversion of natural forests into grasslands resulted in significant losses of SOC and TN stocks which can be attributed to the disturbance of natural forests. Therefore, while making land‐use change plans, the impact of these alterations on soil nutrients must be considered. These findings emphasize the value of establishing natural vegetation (forests) in these areas to retain nutrients and safeguard soil against runoff and erosion. However, anticipating the physico‐chemical impacts of land‐use alteration necessitates a better comprehension of its relations with other drivers of global change, such as changing climate and nitrogen deposition.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"164 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143191799","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":"Dissolved Organic Matter Within Soil Aggregates in Forest Restoration: Insights From Optical Properties","authors":"Gui-bang Zhang, Qing-wei Zhang, Wen-xuan Kuan, Jian Wang, Jun'e Liu, Hao Wang, Ming Li","doi":"10.1002/ldr.5509","DOIUrl":"https://doi.org/10.1002/ldr.5509","url":null,"abstract":"Forest restoration with <i>Robinia pseudoacacia</i> L. has many benefits, and dynamics of dissolved organic matter (DOM) might provide insight into soil restoration. Nevertheless, studies regarding the changes in the DOM within soil aggregates during artificial forest restoration are relatively limited in semiarid regions. Soil aggregates were collected from the topsoil, middle soil, and subsoil layers (i.e., 0–20, 30–50, and 80–100 cm) at six forests (i.e., <i>R. pseudoacacia</i> L.) lands with various restoration ages in a typical semiarid region. The variations of DOM properties in silt + clay size classes, microaggregates and macroaggregates (i.e., &lt; 0.053 mm, 0.053–0.25 mm, and &gt; 0.25 mm) were explored by UV–visible and three-dimensional excited emission matrix spectral. Overall, dissolved organic carbon (DOC) content (41.24–119.82 mg kg⁻¹) of soil aggregates generally increased with restoration age. The DOC content in topsoil aggregates was 3.11–7.13 times larger than those from the other two soil layers. The molecular weight, aromaticity degree, and humification degree had the same trends as that of DOC content with soil depth. The DOC content and aromaticity degree of DOM in macroaggregates were 1.26–4.27 times and 1.01–1.18 times higher than those in microaggregates and silt + clay size classes at most soil layers, respectively. These variations in DOM within soil aggregates were primarily attributed to the changes in soil texture and the densities of plant roots and litter during the forest restoration. The study reveals the positive impact of forest restoration on the increase of DOC content, providing scientific evidence for soil management.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"79 2 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258370","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":"Dilemma of Harvested Cropland and Land Degradation in Agriculture Growth: Determining the Role of Water and Green Energy Resources","authors":"Hao Hu, Guangqiang Luo","doi":"10.1002/ldr.5499","DOIUrl":"https://doi.org/10.1002/ldr.5499","url":null,"abstract":"Research has paid much attention to climate change and natural resource management while overlooking a critical area of harvested cropland, land degradation, and agricultural growth. Nonetheless, the global population is rapidly increasing, and China, as the most populated economy globally, could face the issue of land degradation and scarcity of agricultural products. It is crucial to recognize the factors determining agriculture growth in the region. In this regard, this research intends to analyze the influence of land degradation, agriculture cropland, and agricultural growth. China has increased its green energy production and consumption climate change abatement, and water utilization for industrial and agricultural purposes. Therefore, these factors are also considered along with the socioeconomic conditions and technological advancement. Covering the quarterly data from 1980Q1 to 2023Q4, this research uses time series cointegration tests, which validate the presented of long-run association. Following the mixed order of integration on variables, this uses the autoregressive distributed lag approach. The results mention that harvested cropland, water resources, and green energy are the significant drivers of agriculture growth in the short and long run. The study recommends investing in modern agriculture technology, implementing policies to improve socioeconomic conditions, enhancing circular economy and maintaining food security.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"38 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258371","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}