生态环境学报2025，Vol.34Issue(9)：1361-1372,12.DOI:10.16258/j.cnki.1674-5906.2025.09.004
毛乌素沙地植被净初级生产力的时空变化规律及影响因素
The Spatiotemporal Variation Patterns of Vegetation Net Primary Productivity and Its Influencing Factors in the Mu Us Sandy Land
摘要
Abstract
Vegetation Net Primary Productivity(NPP)is crucial for evaluating ecosystem productivity,carbon sequestration capacity,climate regulation,and ecological health.This study explored the spatiotemporal variations in NPP and its driving mechanisms in Mu Us Sandy Land.The analysis was based on MOD17A3HGF v061 NPP data,meteorological data,and 1 km human activity intensity data.This study used a range of statistical methodologies to analyze the spatiotemporal characteristics of the vegetation NPP.We analyzed the spatiotemporal characteristics of vegetation NPP using multiple statistical methods between 2001 and 2023.This investigation focused on elucidating the primary driving factors that led to changes in the vegetation NPP between 2001 and 2020.Additionally,we quantified the contributions of diverse influencing factors to the vegetation NPP.The results show that the vegetation NPP exhibits a significant growth trend,with a growth rate of C 0.311 Tg·a-1 on a time scale(2001-2023).On a spatial scale,the eastern region has a high growth rate of vegetation NPP due to frequent human activities and abundant precipitation,whereas the western region is constrained by factors such as precipitation,resulting in lower vegetation NPP values.The continuous increase in human activities was a key factor driving vegetation NPP growth.Owing to human activities,the areas of grassland and cultivated land continue to increase,with growth rates of 233 km2·a-1 and 73.5 km2·a-1,respectively.In contrast,the wasteland area decreased at a rate of 325 km2·a-1.Precipitation was identified as the most significant meteorological factor affecting changes in vegetation NPP,with a relative contribution rate of 19.8%.The findings of this study provide a scientific basis for a deeper understanding of the carbon cycle in the region,evaluation of the effectiveness of ecological engineering,and development of ecological protection strategies.关键词
植被净初级生产力/气候变化/人类活动/毛乌素沙地Key words
vegetation net primary productivity/climate change/human activity/Mu Us Sandy Land分类
农业科技引用本文复制引用
许达,宫程程,张在勇,冉彬,胡月,王寒冰,陈晨..毛乌素沙地植被净初级生产力的时空变化规律及影响因素[J].生态环境学报,2025,34(9):1361-1372,12.基金项目
国家自然科学基金项目(42372287) （42372287）
国家资助博士后研究人员计划项目(GZC20232955) （GZC20232955）
陕西省留学人员科技活动择优资助项目(2020006) （2020006）
中国博士后科学基金项目(2024M753472 （）
2024MD763937) （）
中央高校基本科研业务费资助项目(300102292201) （300102292201）
旱区地下水文与生态效应教育部重点实验室开放基金项目(2024SHEEAR002) （2024SHEEAR002）
银肯塔拉生物多样性调查及限制因子分析研究(2023ZL01) （2023ZL01）
