Dynamics Changes and Driving Mechanisms of Vegetation in Aksu River Basin from 2000 to 2020

Xu Li; Yue Shengru; Hu Xuefei

doi:10.13961/j.cnki.stbctb.2024.01.032

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Dynamics Changes and Driving Mechanisms of Vegetation in Aksu River Basin from 2000 to 2020

- Dynamics Changes and Driving Mechanisms of Vegetation in Aksu River Basin from 2000 to 2020
- Bulletin of Soiland Water Conservation Vol. 44, Issue 1, Pages: 326-334(2024)
- 作者机构：
  
  1. 塔里木大学水利与建筑工程学院,新疆,阿拉尔,843300
  2. 中国地质大学地理与信息工程学院,湖北,武汉,430074
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.01.032
  CLC： P237
- Published：2024
- 稿件说明：
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Xu Li, Yue Shengru, Hu Xuefei. Dynamics Changes and Driving Mechanisms of Vegetation in Aksu River Basin from 2000 to 2020[J]. Bulletin of Soiland Water Conservation, 2024, 44(1): 326-334.
DOI：

Xu Li, Yue Shengru, Hu Xuefei. Dynamics Changes and Driving Mechanisms of Vegetation in Aksu River Basin from 2000 to 2020[J]. Bulletin of Soiland Water Conservation, 2024, 44(1): 326-334. DOI： 10.13961/j.cnki.stbctb.2024.01.032.

摘要

[目的] 探究阿克苏河流域植被动态特征及其与潜在影响因子的响应关系

为干旱区生态环境保护和治理提供理论依据。[方法] 基于MODIS归一化植被指数(NDVI)、气候、地形、土壤类型及土地利用等数据

利用趋势分析和地理探测器方法对2000-2020年阿克苏河流域植被动态及驱动机制进行分析。[结果] ①2000-2020年阿克苏河流域NDVI呈显著增加趋势

增速为0.003 2/a

且人类活动区增速显著大于非人类活动区。②潜在因子对NDVI变化的解释力存在时间和空间差异;土地利用转化是人类活动区NDVI变化重要驱动因子

海拔、土壤类型、距冰川积雪距离、距水体距离是非人类活动区NDVI变化重要驱动因子。因子间交互作用可以提高对NDVI变化的解释力

在人类活动区土地利用转化与土壤类型的相互作用对NDVI变化的解释力最强;背景因子、距补给水源的距离与其他因子的交互是非人类活动区NDVI变化的重要因子组合。③2000-2020年阿克苏河流域超过10 %的面积发生土地利用转化

主要表现为裸地和草地的相互转化

耕地、林地、灌木地、人造地表面积显著增加。[结论] 阿克苏河流域人类活动区和非人类活动区NDVI变化时空特征及驱动机制存在差异

应因地制宜

合理管理

促使该流域生态环境良性发展。

Abstract

[Objective] The characteristics of vegetation dynamic changes and their response relationship with potential impact factors in the Aksu River basin were determined in order to provide a theoretical basis for ecological environmental protection and governance in arid areas.[Methods] Based on MODIS normalized difference vegetation index (NDVI)

climate

topography

soil type

and land use data

the dynamics and driving mechanisms of vegetation changes in Aksu River basin from 2000 to 2020 were analyzed using trend analysis and geographical detector methods.[Results] ① The NDVI of the Aksu River basin showed a significant increasing trend from 2000 to 2020

with a growth rate of 0.003 2/yr. The growth rate in the anthropogenic areas was significantly larger than in the non-anthropogenic areas. ② There were temporal and spatial differences in the explanatory power of potential factors for NDVI changes. Land use conversion was an important driving factor for NDVI changes in anthropogenic areas. Elevation

soil type

distance from glacier snowpack

and distance from water bodies were important driving factors for NDVI changes in non-anthropogenic areas. Interaction among factors increased the explanatory power of NDVI changes

and land use conversion interacting with soil type had the strongest explanatory power of NDVI changes in the anthropogenic areas. The interaction among background factors

distance from recharge water sources and other factors was an important combination of factors for NDVI changes in the anthropogenic areas. ③ More than 10 % of the area of the Aksu River basin in 2000-2020 underwent land use conversion

mainly in the form of mutual conversion of bare land and grassland

and a significant increase in the area of cropland

woodland

shrubland

and man-made land surface.[Conclusion] The spatial and temporal characteristics and driving mechanism of NDVI change in human activity area and non-human activity area in Aksu River basin are different. It is necessary to manage the Aksu River basin reasonably according to local conditions to promote the benign development of ecological environment in the basin.

关键词

Keywords

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