Spatiotemporal Variations of Vegetation Coverage and Its Relationships with Climate Change and Human Activities in Ziwuling Region During 2000-2018

Jin Tiantian; Cao Erjia; Gong Jie

doi:10.13961/j.cnki.stbctb.2022.01.044

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Spatiotemporal Variations of Vegetation Coverage and Its Relationships with Climate Change and Human Activities in Ziwuling Region During 2000-2018

- Spatiotemporal Variations of Vegetation Coverage and Its Relationships with Climate Change and Human Activities in Ziwuling Region During 2000-2018
- Bulletin of Soiland Water Conservation Vol. 42, Issue 1, Pages: 335-343(2022)
- 作者机构：
  
  兰州大学资源环境学院西部环境教育部重点实验室,甘肃,兰州,730000
- 作者简介：
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- DOI：10.13961/j.cnki.stbctb.2022.01.044
  CLC：
- Published：2022
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Jin Tiantian, Cao Erjia, Gong Jie. Spatiotemporal Variations of Vegetation Coverage and Its Relationships with Climate Change and Human Activities in Ziwuling Region During 2000-2018[J]. Bulletin of Soiland Water Conservation, 2022, 42(1): 335-343.
DOI：

Jin Tiantian, Cao Erjia, Gong Jie. Spatiotemporal Variations of Vegetation Coverage and Its Relationships with Climate Change and Human Activities in Ziwuling Region During 2000-2018[J]. Bulletin of Soiland Water Conservation, 2022, 42(1): 335-343. DOI： 10.13961/j.cnki.stbctb.2022.01.044.

摘要

[目的] 探究子午岭区气候变化和人类活动与植被动态变化关系，为子午岭区生态保护、植被恢复监测与评价、生态保护及人类活动管理提供科学依据。[方法] 基于MODIS EVI数据和气象数据等，利用像元二分法、相关分析、残差分析等探究了子午岭区2000—2018年生长季(4—10月)植被覆盖时空变化及其与气候变化和人类活动的关系，并定量分析了两者的贡献率。[结果] 2000—2018年子午岭区生长季植被覆盖指数(EVI)均值范围为0.003～0.549，19 a来研究区EVI变化速率为-0.19～0.25/10 a，且以0.055/10 a的增速增加；子午岭区植被覆盖度约为46%，植被覆盖以极显著改善为主。子午岭区植被覆盖的变化主要是因为人类活动和气候变化共同影响。2000—2018年子午岭区生长季均温和降水对EVI变化的影响不显著，人类活动对子午岭区EVI变化产生了正向影响。整体上气候变化对植被覆盖变化的贡献度为28.19%，人类活动贡献度为71.81%。[结论] 子午岭区植被恢复建设的生态效益逐渐增强，植被覆盖变化主要受人类活动的影响，气候变化的贡献相对较小。

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