塔里木河干流植被覆盖度动态变化及驱动因素分析  

Dynamic changes and driving factors of vegetation coverage in the mainstream of Tarim River,China

作　　者：王星[1,2] 霍艾迪[1,2,3] 吕继强 赵志欣 陈建 钟芳倩[1,2] 杨璐莹 管文轲 WANG Xing;HUO Aidi;LYU Jiqiang;ZHAO Zhixin;CHEN Jian;ZHONG Fangqian;YANG Luying;GUAN Wenke(School of Water and Environment,Chang’an University,Xi’an 710054,China;Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of the Ministry of Education,Chang’an University,Xi’an 710054,China;Key Laboratory of Mine Geological Hazards Mechanism and Control,Ministry of Natural Resources,Xi’an 710054,China;Xinjiang SDIC Forest and Grass Ecological Research Co.,Ltd,Urumqi 830000,China)

机构地区：[1]长安大学水利与环境学院,西安710054 [2]长安大学旱区地下水文与生态效应教育部重点实验室,西安710054 [3]自然资源部矿山地质灾害成灾机理与防控重点实验室,西安710054 [4]新疆国投林草生态研究有限责任公司,乌鲁木齐830000

出　　处：《农业工程学报》2023年第8期284-292,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金国际合作项目(42261144749);国家自然科学基金面上项目(41877232)。

摘　　要：针对经济发展和全球气候变化给塔里木河干流植被恢复带来的严重威胁,为加快塔里木河干流植被保护和恢复进程,对保护成效进行动态监测和准确评估,该研究选取2001—2021年MODIS遥感数据分析塔里木河干流植被覆盖动态变化特征;采用趋势分析法、变异系数法分析塔里木河干流植被发展趋势及稳定性,通过相关分析及地理探测器等方法,研究各驱动因素对植被覆盖变化的影响。结果表明:塔里木河干流植被覆盖度总体呈现相对稳定的波动上升趋势,且变化趋势具有明显季节性,在夏季植被覆盖度高达28.56%;植被覆盖度由高到低的顺序为上游、中游、下游,在空间上存在明显地域差异,7月份上游干流区域平均植被覆盖度可达到下游的3.26倍;塔里木河66.5%的区域植被覆盖度呈增加趋势,其中大部分区域(49.0%)为显著增加(P<0.05);自然因素和人类活动的共同作用是塔里木河干流植被覆盖度呈现快速增加和空间差异的主要原因,其中又以人类活动对植被覆盖度影响更为直接。研究结果为当地生态环境保护提供科学依据。Tarim River is the longest inland river in China,which irrigates nearly one-third of Xinjiang's land in the last century.The previous unreasonable exploitation and utilization have posed a great threat to the Tarim River,particularly with the economic development and global climate change in recent years.The ecological environment of the Tarim River basin has been improved significantly,after a series of comprehensive ecological control measures,such as ecological water transfer in 2000.However,a serious challenge still remains on the sustainability of ecological restoration in the mainstream of the Tarim River under water transport projects.This study aims to clarify the dynamic change characteristics of vegetation cover in the mainstream of the Tarim River,in order to accelerate the process of vegetation protection and restoration.MODIS data was also collected from 2001 to 2021.Trend analysis and coefficient of variation were used to determine the development trend and stability of vegetation.The influence of driving factors on vegetation coverage was investigated by correlation analysis and geographical detector.The results showed that a relatively stable rising trend was found in the vegetation coverage of the mainstream of Tarim River,particularly with an annual growth rate of 2.84%.The changing trend was outstanding in seasonal fluctuations.The vegetation coverage was as high as 28.56%in summer,especially in August,but the lowest in April.There were obvious regional differences in the vegetation coverage,with the descending order of the upstream,midstream,and downstream.In 2021,the vegetation coverage in the upstream was 1.91 times as much as that in the midstream,and 3.34 times as much as that in the downstream in August.Vegetation coverage increased in 66.5%of Tarim River,most of which(49.0%)increased significantly.The combined effect of natural factors and human activities was the main reason for the rapid increase and spatial difference of vegetation coverage in the mainstream,among which the human acti

关 键 词：植被 降水 植被覆盖度 MODIS遥感数据 地理探测器 塔里木河干流 

分 类 号：P237[天文地球—摄影测量与遥感]