Effects of hydrothermal factors and human activities on the vegetation coverage of the Qinghai-Tibet Plateau.
Effects of hydrothermal factors and human activities on the vegetation coverage of the Qinghai-Tibet Plateau.
复制标题
水热因子和人类活动对青藏高原植被覆盖度的影响.
DOI:
10.1038/s41598-023-39761-8
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发表时间:
2023-08-01
影响因子:
4.6
通讯作者:
Li, Hongwei
中科院分区:
文献类型:
--
作者:
Guo, Jianxiao;Zhai, Liang;Sang, Huiyong;Cheng, Siyuan;Li, Hongwei
A systematic understanding of the spatio-temporal changes and driving factors in the Qinghai-Tibet Plateau holds significant scientific reference value for the future of ecological sustainable development. This paper utilizes MODIS normalized difference vegetation index (NDVI) and meteorological data to investigate the spatio-temporal changes and driving factors of vegetation coverage in the Qinghai-Tibet Plateau from 2001 to 2020. Methods employed include the dimidiate pixel model, trend analysis, partial correlation analysis, and residual analysis. The results demonstrate a generally fluctuating upward trend in vegetation coverage across the Tibetan Plateau over the past two decades, with spatial expansion occurring from northwest to southeast. Vegetation coverage exhibits a positive correlation with climate factors. Approximately 60.7% of the area showed a positive correlation between vegetation fractional cover (FVC) and precipitation, with 8.66% of the area demonstrating extremely significant (p < 0.05) and significant (p < 0.01) positive correlation. Human activities, on the whole, have contributed to the enhancement of vegetation cover in the Qinghai-Tibet Plateau. The areas where human activities have positively impacted vegetation cover are primarily situated in north-central Qinghai and north of Ngari, while areas experiencing degradation include certain grassland regions in central-eastern Yushu, Nagqu, and Lhasa.
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影响因子:
9.1
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通讯作者:
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