阿克苏地区天然林保护工程区植被覆盖度变化及驱动因子研究  

Change and driving factors of vegetation coverage in the natural forest protection project area of Aksu prefecture

作　　者：康娟[1] 方贺 石守海 夏瑞 彭金灵 KANG Juan;FANG He;SHI Shouhai;XIA Rui;PENG Jinling(Aksu Prefecture Meteorological Administration,Aksu 843000,China;Zhejiang Climate Center,Hangzhou 310052,China;School of Geoscience and Technology,Zhengzhou University,Zhengzhou 450000,China)

机构地区：[1]阿克苏地区气象局,新疆阿克苏843000 [2]浙江省气候中心,浙江杭州310052 [3]郑州大学地球科学与技术学院,河南郑州450000

出　　处：《测绘通报》2024年第5期41-47,共7页Bulletin of Surveying and Mapping

基　　金：新疆重点研发项目专项-厅厅联动项目(2022B03030);浙江省气象局科技重点项目(2022ZD06);新疆气象局科技项目(YD202209);科技兴阿项目(2023KTXA14);中国气象局“风云卫星遥感产品校验”创新团队项目(CMA2023QN12)。

摘　　要：本文以阿克苏地区天然林保护工程区为研究区域,基于MODIS卫星影像资料,首先利用像元二分法模型制作了研究区2000—2020年生长季(5—9月)植被覆盖度产品,然后分析了长时序植被覆盖度时间变化规律和空间分布特征,最后利用地理探测器模型分析植被覆盖度变化驱动机制。结果显示,2000—2020年阿克苏天保区植被覆盖度以0.23%/a的速度呈显著上升趋势,植被覆盖度显著增加面积占比达50.4%。在众多影响因子中,土地利用是影响研究区植被覆盖的主要影响因子,解释力达0.59;人口密度、蒸散发及GDP对植被的解释力是次要影响因子,分别为0.360、0.357、0.308。本文有助于更好地理解人类活动和自然因素对植被生态质量变化的影响及其相互作用机制。In this paper,the natural forest protection project area of Aksu prefecture is taken as the research area.Based on MODIS satellite image data,the fractional vegetation cover(FVC)of growing seasonis produced based on pixel dichotomy from 2000—2020.Subsequently,the temporal variation and spatial distribution characteristics of long time series FVC are analyzed.Finally,the driving mechanism of vegetation coverage change is analyzed using the geographic detector model.The results show that the vegetation coverage in the research area increased significantly by 0.23%/a from 2000 to 2020.The area with significant increase in vegetation coverage accounted for 50.4%.Among the many factors,land use is the main factor affecting the vegetation cover in the study area,and the explanatory power reached 0.59.The explanatory power of population density,evapotranspiration and GDP on FVC is the secondary influencing factors,which are 0.360,0.357 and 0.308,respectively.These results help to better understand the impact of human activities and natural factors on vegetation ecological quality cover changes and their interacting mechanisms.

关 键 词：植被覆盖度 遥感 阿克苏地区 天然林保护工程 地理探测器 

分 类 号：P237[天文地球—摄影测量与遥感]