生态学报2025，Vol.45Issue(7)：3142-3156,15.DOI:10.20103/j.stxb.202311062411
沙漠黄土过渡带典型区农业系统演变及碳排放空间格局
Evolution of agricultural system and spatial pattern of carbon emission in typical desert loess transition zone
摘要
Abstract
Globally accelerating urbanization and surging food demands have led to the expansion of agricultural activities into fragile areas like plateaus and arid lands,typically prioritized for large-scale ecological conservation and restoration initiatives.Initial research indicates that the desertloess transition zone,an area of considerable ecological and productive importance,has utilized large-scale ecological conservation and restoration efforts to foster ecosystem recovery and agricultural modernization,subsequently boosting local community incomes.Nevertheless,the rapid expansion of agriculture has brought about a new concern.The carbon emissions associated with this growth pose a threat to both regional ecological balance and the global climate.In light of this,the current study zooms in on Yuyang District,aiming to dissect the patterns and spatial distribution of agricultural carbon emissions.By taking into account the crop distribution and various carbon emission sources during agricultural production,a specialized calculation framework for agricultural carbon emissions at the plot scale within Yuyang District has been constructed.Spatial correlation models were utilized to measure the spatial agglomeration patterns of agricultural carbon emissions,with the goal of evaluating the environmental impact of agricultural activities and establishing a scientific foundation for sustainable development.The findings indicate:(1)Regional agricultural development has not compromised existing vegetation restoration efforts,with an expansion of farmland area by approximately 28.49％from 2000 to 2020,and 6975.62 square kilometers showing an increase in Normalized Difference Vegetation Index(NDVI);(2)The agricultural system has seen significant growth in production scale and economic output,with irrigated farmland expanding from 30,721 hectares in 2000 to 60,298 hectares in 2020,and agriculture and animal husbandry production values increasing by 16.39 times from 2000 to 2020;(3)The total agricultural carbon emissions in Yuyang District amount to 356,02 tons,with significant contributions from fertilizer use,irrigation,enteric fermentation,and manure emissions;(4)The intensity of agricultural carbon emissions displays a spatial pattern,being more concentrated in the north compared to the south.It is recommended that high-aggregation areas in the north strengthen large-scale agricultural operations and reduce energy and agricultural input,while low-aggregation areas in the south improve agricultural infrastructure and promote solar-powered water lifting irrigation technologies to achieve low-carbon and green agricultural development in the region.The research results can provide references for the supervision and management of agricultural carbon emissions and the optimization strategies of carbon emissions in different agricultural regions,promoting the sustainable development and construction of agriculture and the ecological environment.关键词
农业碳排放/空间格局/空间相关性/沙漠黄土过渡带Key words
agricultural carbon emissions/spatial pattern/spatial correlation/desert loess transition zone引用本文复制引用
吴颖欣,梁伟,苟芬,傅伯杰,吕一河,李海宝,王佳怡..沙漠黄土过渡带典型区农业系统演变及碳排放空间格局[J].生态学报,2025,45(7):3142-3156,15.基金项目
国家自然科学基金项目(面上项目42071144) （面上项目42071144）
陕西师范大学"一带一路"专项科研重点项目(22YDYLZ002) （22YDYLZ002）
陕西省重点研发计划项目资助(2024SF-YBXM-589) （2024SF-YBXM-589）
陕西师范大学研究生领航人才培养项目(LHRCCX23165) （LHRCCX23165）
