中国资源综合利用2024，Vol.42Issue(4)：150-159,10.DOI:10.3969/j.issn.1008-9500.2024.04.042
2000-2020年喀什地区植被净初级生产力时空变化及其驱动因素研究
Research on Spatiotemporal Variation and Driving Factors of Net Primary Productivity of Vegetation in Kashi Region from 2000 to 2020
摘要
Abstract
In order to comprehensively and quantitatively grasp the growth and changes of vegetation ecosystem in Kashi region,based on the MODIS17A3 dataset,this paper uses trend analysis,geostatistical analysis,correlation analysis and other methods to study the spatiotemporal variation characteristics and driving factors of Net Primary Productivity(NPP)of vegetation in Kashi region from 2000 to 2020.The results show that the average NPP of vegetation in Kashi region in the past 20 years was 126.160 g C/(m2·a),with a standard deviation of 15.801 g C/(m2·a);in the past 20 years,the overall NPP in Kashi region showed a slow growth trend,but in 2010,there was a sudden change in NPP values,which was closely related to precipitation;the vegetation NPP in Kashi region shows significant spatial autocorrelation and heterogeneity,with a coefficient of variation of 0.050～4.344 and a Moran index of 0.910,and high NPP values are concentrated in oasis areas with abundant water sources.The vegetation growth in the Kashi region has continued to improve over the past 20 years,and structural factors such as altitude,slope,and annual precipitation have played a decisive role in the spatiotemporal variation of vegetation NPP.关键词
植被/净初级生产力(NPP)/时空变化/驱动因素/相关性分析/趋势分析/地统计分析/喀什地区Key words
vegetation/Net Primary Productivity(NPP)/spatiotemporal variation/driving factors/correlation analysis/trend analysis/geostatistical analysis/Kashi region分类
农业科技引用本文复制引用
朱敏,木合塔尔·艾买提,阿力木·依明,努尔比亚·阿布都克尤木..2000-2020年喀什地区植被净初级生产力时空变化及其驱动因素研究[J].中国资源综合利用,2024,42(4):150-159,10.基金项目
国家自然科学基金(U1703341 （）
41764003) （）
校级科研项目[(17)2605]. （17）
