Effects of Human Activities on Terrestrial Vegetation Coverage Change of Poyang Lake Basin During 2000-2020

Liu Tingting; Yang Xiaoxia; Ye Xuchun; Wu Juan; Liu Jia

doi:10.13961/j.cnki.stbctb.2022.04.040

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Effects of Human Activities on Terrestrial Vegetation Coverage Change of Poyang Lake Basin During 2000-2020

- Effects of Human Activities on Terrestrial Vegetation Coverage Change of Poyang Lake Basin During 2000-2020
- Bulletin of Soiland Water Conservation Vol. 42, Issue 4, Pages: 320-329(2022)
- 作者机构：
  
  1. 西南大学地理科学学院,重庆,400715
  2. 中国水利水电科学研究院/流域水循环模拟与调控国家重点实验室,北京,100038
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2022.04.040
  CLC：
- Published：2022
- 稿件说明：
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Liu Tingting, Yang Xiaoxia, Ye Xuchun, et al. Effects of Human Activities on Terrestrial Vegetation Coverage Change of Poyang Lake Basin During 2000-2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(4): 320-329.
DOI：

Liu Tingting, Yang Xiaoxia, Ye Xuchun, et al. Effects of Human Activities on Terrestrial Vegetation Coverage Change of Poyang Lake Basin During 2000-2020[J]. Bulletin of Soiland Water Conservation, 2022, 42(4): 320-329. DOI： 10.13961/j.cnki.stbctb.2022.04.040.

摘要

[目的

]

研究人类活动对近年来鄱阳湖流域陆地植被覆盖变化的作用机制，为推动该流域乃至长江流域生态系统健康发展提供理论依据。[方法

]

基于鄱阳湖流域最新MODIS增强型植被指数(EVI)数据产品，并结合气象数据以及土地利用和人口数据，采用趋势分析、残差分析、相关分析等方法，分析研究区2000—2020年流域陆地植被覆盖变化特征，深入探讨了人类活动作用的影响机制。[结果

]

近20 a来鄱阳湖流域地表植被状况明显改善，植被EVI呈显著上升趋势(p

0.05)；流域人类活动整体上对植被EVI的增加起着重要的促进作用。在城镇化新扩张区域表现出明显的抑制作用；在流域尺度上，人类活动对EVI增长的贡献率达到32.48%，不同子流域间人类活动的平均贡献率为30%～43%。鄱阳湖流域植被EVI及其残差趋势在人口密度增加0～100人/km

和400～500人/km

时，分别出现了一个峰值。这一结果主要得益于近年来江西省社会经济快速发展和生态文明建设理念的驱动，广大乡村地区人口密度的小幅增加(0～100人/km

)比单纯的人口流失区更能有效改善地表植被状况。与此同时，城市区域人口密度增加幅度在一定区间时(400～500人/km

)也能促进地表植被状况的改善。[结论

]

人类活动是地表植被覆盖变化的重要促进因素，高质量发展中的“绿色”“协调”理念对生态环境的改善至关重要。

Abstract

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