Land Degradation & Development最新文献

{"title":"Effects of Vegetable Cover on the Regeneration Process in Degraded Dry Forest in Brazil","authors":"Stefanny Martins de Souza, Maiara Bezerra Ramos, Maria Gracielle Rodrigues Maciel, Sonaly Silva da Cunha, José João Lelis Leal de Souza, Sérgio de Faria Lopes","doi":"10.1002/ldr.5316","DOIUrl":"https://doi.org/10.1002/ldr.5316","url":null,"abstract":"The Brazilian Caatinga is among the most diverse dry forests in the world, yet half of its original coverage has been degraded. Natural regeneration is influenced by climatic and edaphic conditions, as well as the existing adult stratum. Despite its significance, this process remains poorly understood in the Caatinga. Thus, our study aimed to analyze how anthropogenic disturbance, vegetation cover, and soil properties affect the regenerating stratum under different levels of Caatinga vegetation cover. The research was conducted in the driest region of Brazil. The selected sites represent low (Area I) and high (Area II) normalized difference vegetation index. Six vegetable plots (50 × 20 m each) were delimited to study adult stratum, and four vegetable plots (10 × 10 m each) to regeneration stratum. Topsoil was sampled in all vegetable plots. Our results reveal interactions between soil characteristics and the adult and regenerating strata. Area II exhibited higher diversity and a greater number of exclusive species, while Area I was dominated by species more resistant to limiting conditions, such as <jats:italic>Aspidosperma pyrifolium</jats:italic> Mart. &amp; Zucc. The C and N content in the soil showed a positive and significant correlation with the diversity of the regenerating stratum. The data suggest that the area with less vegetation cover, richness, and diversity shows signs of desertification.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"80 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449607","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":"Dam Inundation Modulates the Effect of Plant Diversity on Soil Multifunctionality in the Riparian Zone of the Three Gorges Reservoir","authors":"Jie Zheng, Muhammad Arif, Wenqiu Cao, Changxiao Li","doi":"10.1002/ldr.5317","DOIUrl":"https://doi.org/10.1002/ldr.5317","url":null,"abstract":"Understanding the biodiversity–ecosystem multifunctionality relationship is critical for predicting the consequences of species loss on the sustainable provision of ecosystem services. Both theoretical and empirical studies generally demonstrate a positive biodiversity–ecosystem multifunctionality relationship. However, the underlying mechanisms linking soil multifunctionality (SMF) to plant diversity remain unclear, particularly in dynamic riparian habitats. In this study, we investigated the plant community, 10 soil functions, and their drivers within the riparian zone regulated by the Three Gorges Dam in China. Our results showed that taxonomic, phylogenetic, and functional diversity affect SMF at alpha and beta scales in both positive and negative ways. Notably, most diversity metrics are negatively correlated with SMF, especially at lower elevations and in areas near the dam. Alpha and beta diversity contribute equally to SMF, whereas functional diversity explains SMF better than taxonomic or phylogenetic diversity. Furthermore, abiotic variables explain 24% of the variance in SMF, significantly exceeding the 3% explained by biotic variables. Dam inundation has both direct effects on SMF and indirect effects mediated by soil pH, bulk density, and functional dispersion, all of which are critical variables in elucidating SMF changes. Our findings indicate that dam inundation modulates the effect of plant diversity on SMF and underscore the roles of biotic factors and functional diversity in mediating this effect. This study challenges the prevalent notion that biodiversity universally positively affects ecosystem multifunctionality and broadens our understanding of the linkages between plant diversity and SMF, as well as its drivers under dam-induced hydrological changes.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"232 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142448381","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":"Mid-Term Effects of Postfire Mulching With Straw or Wood Chips on Soil Erosion in Semi-Arid Forests","authors":"Pedro Antonio Plaza-Álvarez, Manuel Esteban Lucas-Borja, María Dolores Carmona-Yáñez, David Candel-Pérez, Demetrio Antonio Zema","doi":"10.1002/ldr.5312","DOIUrl":"https://doi.org/10.1002/ldr.5312","url":null,"abstract":"Soil mulching has been studied as a postfire management action to reduce soil erosion in several forest environments. Less research exists about the effectiveness of mulching with straw and wood chips beyond the first year after a wildfire on sites with different slopes. To fill this gap, this study has measured soil erosion in three burned sites (untreated soils, and soils mulched using wheat straw or pine wood chips) throughout a 2.5-year observation period in a forest of Castilla-La Mancha (Central Eastern Spain). Soil condition and slope (gentle, &lt; 32%, gentle vs. steep, &gt; 38%, slopes) significantly influenced erosion, which, however, was of low entity due to the relatively low rainfall erosivity. Mulching was generally effective after the most intense events (maximum 30-min rainfall intensity over 15 mm/h). On the gentle hillslopes, mulch application did not reduce postfire soil loss compared with the untreated sites. In contrast, on the steep slopes, the effectiveness of soil mulching was significant for the two most intense rainfall events (−30% of soil loss in plots treated with wheat straw compared with the burned and untreated sites). The cumulated soil loss significantly decreased on the treated sites (−40%) only when wheat straw was used. On steep slopes, the anti-erosive effects of mulching were almost durable, since the mulch covered more than one-third of the plot areas until the end of the monitoring period. These results help land managers adopt the most effective measures of postfire management in semi-arid forests affected by severe wildfires.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"78 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142448769","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":"Variation of Dissolved Organic Matter Chemistry in the Runoff From Slopes Covered With Biocrusts Under Rainfall: Insights From the Linkages Between the Optical and Molecular Composition Analyses","authors":"Guo Chen, Hao Wang, Qing-wei Zhang, Ren Geng, Jian Wang, Yuan-bi Yi, Ming Li, Ding He","doi":"10.1002/ldr.5340","DOIUrl":"https://doi.org/10.1002/ldr.5340","url":null,"abstract":"Variation of dissolved organic matter (DOM) largely affects the regional and even global carbon cycle. Both optical techniques and ultra-high-resolution mass spectrometry have their advantages and disadvantages, and the combination of them can better track DOM cycles. However, the relationship between the optical and molecular characteristics of DOM in the runoff from slopes covered with biocrusts are still unclear. Therefore, optical techniques and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) were combined to explore the DOM composition in the runoff from different runoff plots (i.e., bare runoff plot [BP], cyanobacterial crusts covered runoff plot [CP], mixed crusts covered runoff plot [MIP], moss crusts covered runoff plot [MOP]) under different rainfall intensities in the current study. The findings stated that the runoff from BP and CP exhibited a higher proportion of terrestrial DOM under heavy rainfall intensity (HRI), whereas DOM in the runoff from MIP and MOP were primarily controlled by microbial sources. The DOM unique molecules in the runoff from CP were more recalcitrant under HRI than those under light rainfall intensity (LRI), and these differences decreased with the increased with the succession stage of biocrusts. The results of aromaticity characterized by optical method and FT-ICR MS were generally consistent. Meanwhile, Spearman correlation analysis also indicated that the optical parameters can be utilized for the estimation of molecular characteristics and labile in the runoff from slopes covered with biocrusts after the necessary calibration of the correction between the optical and molecular parameters.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"1 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142444400","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":"Enrichment of Phytopathogen Dominated by Volutella in the Rhizosphere May Be an Important Cause of Continuous Cropping Obstacles in Sweet Potatoes","authors":"Long Zhang,&nbsp;Lanfu Liu,&nbsp;Dongliang Sun,&nbsp;Meikun Han,&nbsp;Yaya Hu,&nbsp;Liang Shi,&nbsp;Jie Wang,&nbsp;Xihui Xu,&nbsp;Zhimin Ma,&nbsp;Yahua Chen,&nbsp;Xiafang Sheng","doi":"10.1002/ldr.5300","DOIUrl":"10.1002/ldr.5300","url":null,"abstract":"<div>\u0000 \u0000 <p>Obstacles related to the continuous cropping of sweet potatoes (<i>Ipomoea batatas</i> (L.) Lam.) restrict its intensive production. However, the effects of continuous cropping on soil properties and/or the rhizosphere microbial community are largely unclear. In this study, we analyzed changes in rhizosphere soil chemical properties and microbial communities of sweet potatoes across different cultivation years. We observed that the microbial diversity and complexity of the fungal ecological network in rhizosphere soils of sweet potatoes were decreased after 5 years of continuous cropping, with significant enrichment in <i>Sphingobium</i>, <i>Gemmatimonas</i>, <i>Volutella</i>, and <i>Neoidriella</i>. Tuber yield, soil pH, and available potassium (AK) content were significantly reduced after continuous cropping, with the soil microbial community having the highest correlation with pH, AK, and ammonium nitrogen (NH₄\u0000 ⁺-N). Specifically, soil pH and AK were positively correlated with <i>Bacillus</i> and <i>Gaiella</i>, and negatively correlated with some plant-pathogenic fungi (<i>Volutella</i> and <i>Neoidriella</i>), while NH₄\u0000 ⁺-N showed the opposite trend. In addition, soil pH, AK, and the relative abundance of <i>Bacillus</i> were positively correlated with tuber yield, while <i>Volutella</i> showed the opposite trend. In summary, the continuous cropping of sweet potatoes negatively affects rhizosphere soil health, resulting in imbalanced soil fertility and an increased abundance of pathogens. These results improve our understanding of factors driving obstacles faced with the continuous cropping of sweet potatoes, enabling future studies and the development of technologies to overcome these obstacles.</p>\u0000 </div>","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"35 17","pages":"5341-5356"},"PeriodicalIF":3.6,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142448396","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":"Effects of Different Land Uses and Slope on Runoff and Soil Loss on the Loess Plateau of China","authors":"Zhiwei Cui, Peng Li, Lei Zhang, Tian Wang, Jianye Ma, Lie Xiao, Binhua Zhao, Jianchun Han, Zixuan Yan, José A. Gómez","doi":"10.1002/ldr.5337","DOIUrl":"https://doi.org/10.1002/ldr.5337","url":null,"abstract":"The Loess Plateau has one of the most serious areas of soil erosion in China; therefore, studying the effect of soil and water conservation measures on the erosion of loess soil slopes is important for land management and agricultural development. This study is based on 5 years of field runoff observations and rainfall data from 2015 to 2019. Correlation and regression analyses were used to study the runoff and sediment production of loess soil and its relationship with rainfall, slope and land use. The results show that &gt; 80% of the erosive rainfall occurs mainly in July to August in the area. Runoff and soil loss from the plots differed substantially, depending on land use, soil conservation measures and slope degree. Bare plots experienced the highest soil loss rate of over 27 t/ha with higher runoff depth, followed by cultivated plots (4.55 t/ha), grass plots (0.43 t/ha), shrub plots (0.35 t/ha) and forest plots (0.13 t/ha). Among the four soil and water conservation measures, the runoff and sediment reduction benefits of forest and shrub plots were the highest. The runoff reduction benefit fluctuated at approximately 0.8, and the benefit of sediment reduction was ≈1. The overall performance was forest &gt; shrubland &gt; grassland &gt; cultivated land &gt; bare land, and the benefits of sediment reduction were greater than those of runoff reduction. Forests had the highest soil retention capacity on slopes from 5° to 25°, and forests on gentle slopes had the best water storage capacity. Shrub plots had the best water storage capacity when they were on steep slopes. Rainfall erosion forces were significantly and positively correlated (<i>p</i> &lt; 0.01) with runoff depth and soil loss, making it the most significant rainfall indicator of sediment production. Under the same rainfall conditions, soil and water conservation measures are still required on bare slopes, land use is the main control factor for slope sediment production, and appropriate land use can greatly reduce the threat of slopes in terms of soil erosion. This study shows that soil and water conservation measures are imperative to prevent runoff and soil loss, especially for bare land without any measures; on steep slopes, a vegetation combination primarily featuring shrubs is expected to achieve greater benefits in reducing runoff and sediment. This study can provide a scientific basis for the management of vegetation measures and the implementation of soil and water conservation measures on loess soil slopes.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"10 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142436416","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":"Quantifying Soil Loss in the Brazilian Savanna Ecosystem: Current Rates and Anticipated Impact of Climate Changes","authors":"Dimaghi Schwamback, Abderraman R. Amorim Brandão, Luis Eduardo Bertotto, Ronny Berndtsson, Linus Zhang, Edson Wendland, Magnus Persson","doi":"10.1002/ldr.5331","DOIUrl":"https://doi.org/10.1002/ldr.5331","url":null,"abstract":"The Brazilian Savanna (Cerrado) is the second-largest South American biome that corresponds to almost two-third of the national agricultural production. Extensive agricultural-driven land-use changes have significantly altered the landscape, causing increased soil erosion. Furthermore, projections of climate change effects on the Cerrado raise concerns about the potential exacerbation of soil loss and its consequences on ecosystem sustainability. This study investigated soil loss for the Cerrado ecosystem by assessing current rates and projecting the potential effects of future climate change. Current soil loss was based on experimental plots (100 m²) during 7 years maintained under typical main land cover in Brazil (sugarcane, pasture, Cerrado, and bare soil). Erosivity, by using the Universal Soil Loss Equation (USLE), was estimated from observations, parameters of erodibility, and land cover. To assess the future soil loss (2100), we used the calibrated USLE equation with yearly erosivity derived from 12 downscaled and bias-corrected SSP2-4.5 and SSP5-8.5 scenarios of CMIP6 climate model projections. Current agricultural practices induce considerable erosion, where sugarcane has 3.4 times higher soil loss as compared with the natural soil cover. Regarding future SSP2-4.5 and SSP5-8.5 scenarios (2100), we estimated an increase of 4.9% and 7.6% in soil loss, respectively, for all land covers. The observed soil loss rates underscore the critical importance of implementing sustainable land management practices to mitigate further soil degradation. Climate change may impose additional stress on the Cerrado ecosystem, amplifying the urgency for adaptive measures to safeguard this important biome.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"19 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431318","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":"Alpine SOC and Microbial Community Assembly Were Buffered Through Soil Pore Structure Along an Altitudinal Gradient","authors":"Ruizhe Wang, Xia Hu, Yunduo Zhao, Pengyu Pan, Jialu Zhang","doi":"10.1002/ldr.5324","DOIUrl":"https://doi.org/10.1002/ldr.5324","url":null,"abstract":"Elevation changes influence various environmental factors including cloudiness, atmospheric density, and temperature. Previous studies on the effects of elevation on microbial communities and soil organic carbon (SOC) yielded inconsistent results. This study tried to reveal the distribution patterns of microbial communities and SOC concentrations, as well as their interactions with soil structure along an elevational gradient in the alpine region. We investigated six typical ecosystems along an elevational gradient on the north-eastern Qinghai-Tibet Plateau. Phospholipid fatty acid (PLFA) analysis and X-ray computed tomography (CT) methods were used to quantify microbial abundance and pore structure of soils, respectively. The results demonstrated that SOC content and total PLFAs peaked in the meadow ecosystem. In the subsoil, total PLFAs, fungal, and bacterial PLFAs followed the U-shape pattern with increasing elevation. In both topsoils and subsoils, the surface area density of pores increased with elevation, and it was found to be positively correlated with SOC and microbial abundance. Soil structure mainly affects the input and adsorption of root nutrients by altering the pore surface area, thereby regulating the enrichment of microorganisms. The impact of pore structure on microbes were more obvious in the topsoil than in the subsoil. Interactions among pore structure, soil properties, and environmental factors jointly affects the microbial communities, demonstrating that elevation indirectly affects microbial communities through soil resource regulation.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"69 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431319","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":"Green Energy and Land Resources: COP27 Perspective of BRICS Economic Growth and Land Production","authors":"Yin-Pei Teng","doi":"10.1002/ldr.5295","DOIUrl":"10.1002/ldr.5295","url":null,"abstract":"<div>\u0000 \u0000 <p>In contemporary times, managing land resources and green energy from the COP27 perspective is a burning issue, attracting the attention of policymakers and scholars to attaining sustainable economic growth. In emerging economies, the adoption of both green energy and land resources is rapidly increasing to encourage economic productivity. In this regard, the current research explores the impact of oil resource fluctuations on the economic growth of the BRICS economies. In addition, this research contemplates the role of technological innovation, energy efficiency, and gross capital formation during 1990–2021. Using several econometric approaches, the results indicate the variables' stationarity and the cointegration between variables. Since most of the study variables follow a nonnormal distribution, this work employs a novel moments quantile regression. The estimation outcomes revealed that oil resource fluctuations, energy efficiency, technological innovation, and gross capital formation are substantial economic performance and growth drivers. The robustness of the empirical model is also tested via parametric (robust least squares) and nonparametric (quantile regression) approaches. Bidirectional causality estimates are reported between these variables except for the oil resource fluctuations that unidirectionally cause economic performance. Based on these estimates, this research recommends the sustainable management of oil resources and further investment in energy efficiency and technological innovation to attain sustainable economic performance.</p>\u0000 </div>","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"35 17","pages":"5267-5280"},"PeriodicalIF":3.6,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142436448","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":"Grassland or Cropland? Land Use Dilemma and Ecological Solutions in Inner Mongolia","authors":"Licheng Liu, Xintao Hu, Lexin Li, Qian Zhang","doi":"10.1002/ldr.5328","DOIUrl":"https://doi.org/10.1002/ldr.5328","url":null,"abstract":"Inner Mongolia plays a critical role in both ecological conservation and food provision in China. However, some researchers have argued that focusing on and improving only one side of the equation necessarily threatens the functionality of the opposite side. To address this problem, we compared a “business‐as‐usual” scenario (BAU) with a “sustainable land use planning” scenario (SLU) constructed by simulating spatiotemporal changes in croplands and grasslands in Inner Mongolia from 2020 to 2030. Additionally, we analyzed the changes in ecosystem services and protein supply associated with changes in land use. We found that, in the BAU scenario, grasslands would decrease by 1.85% over the simulation period, while croplands would increase by 9.94%, with ecosystem services decreasing under both land uses. In contrast, land use changes over the same period in the SLU scenario are more significant, with increases of 11.33% and 2.78% in grassland and cropland, respectively, but, in this case, with ecosystem services increasing under both land uses. Moreover, protein supply increased under both scenarios, but SLU scenario can provide 33% more protein than the BAU scenario. The interconversion of cropland and grassland is the main type of land conversion in the study region, while cropland, grassland, and bare land show a triangular cycle of conversion. In addition, the implementation of scenario planning can realize multiple dividend for cultivation, livestock, and ecology in Inner Mongolia.","PeriodicalId":203,"journal":{"name":"Land Degradation & Development","volume":"81 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142415650","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}