Positive contribution and negative impact of karst rocky desertification control on biodiversity in southwest China

被引：0

作者：

Long M. ^{[1
,2
]}

Bai X. ^{[1
,2
,3
,4
]}

Li Z. ^{[1
,5
]}

Xue Y. ^{[1
,5
]}

Chen F. ^{[1
,6
]}

Li C. ^{[1
,2
]}

Ran C. ^{[1
,2
]}

Zhang S. ^{[1
,2
]}

Du C. ^{[1
,5
]}

Song F. ^{[1
,2
]}

Xiao B. ^{[1
,5
]}

Xiong L. ^{[1
,5
]}

机构：

[1] State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, CAS, Guiyang

[2] University of Chinese Academy of Sciences, Beijing

[3] College of Resources and Environmental Engineering, Guizhou University, Guiyang

[4] College Of Environment and Ecology, Chongqing University, Chongqing

[5] School of Geography and Environmental Sciences, Guizhou Normal University, Guiyang

[6] Guizhou Academy of Water Resources Sciences, Guiyang

来源：

Dili Xuebao/Acta Geographica Sinica | 2024年 / 79卷 / 01期

基金：

中国国家自然科学基金;

关键词：

biodiversity; climate change; rocky desertification control; southwest China;

D O I：

10.11821/dlxb202401007

中图分类号：

学科分类号：

摘要：

Ecological restoration measures have a significant impact on biodiversity hotspots. Therefore, quantifying the contribution of desertification control to biodiversity is crucial in the karst region of southwest China. This study employed regression analysis and residual trend analysis to reveal the evolutionary patterns of desertification and biodiversity from 2000 to 2020 in this region. It quantified the contributions of desertification control and other factors to biodiversity. The results indicated that during the study period, desertification in the karst region was mainly classified as mild and moderate levels, with a total area reduction of 102500 km2 at an annual rate of 4900 km2/a. Overall, biodiversity showed an increasing trend, with a mean value of the biodiversity composite index at 0.40, maintaining a moderate level. There was a positive correlation between desertification control and biodiversity, with desertification control contributing 26.39% of the overall impact. Climate change and human activities contributed 52.78% and 47.22% to biodiversity, respectively. This suggests that desertification control has made a positive contribution to biodiversity and provides valuable guidance for future ecological restoration projects and biodiversity conservation. © 2024 Science Press. All rights reserved.

引用

页码：97 / 113

页数：16

共 51 条

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