| 摘要: |
| 基于构建的能够同时反映植被覆盖和生产能力的植被综合生态质量指数，采用趋势分析、相关分析和残差分析等方法，对贵州喀斯特石漠化区植被生态质量变化及其驱动因素进行研究。结果表明：（1）2000-2021年喀斯特石漠化区植被综合生态质量指数呈上升趋势，增速为0.7a-1，石漠化区内除省的西南部、中部和北部局地显著降低外，占94.59%的区域植被生态质量均呈显著上升；（2）植被综合生态质量指数与降水、气温的偏相关系数均以正相关性为主，其中显著正相关区分别占17.48%、68.79%，与气候因子的复相关系数以正相关分布为主，显著正相关区占到81.79%，石漠化区内气候变化的综合作用有利于植被生态质量的提高；（3）喀斯特石漠化区植被生态质量变化受气候变化和人类活动共同驱动，两者的贡献比例分布为18.84%、81.16%，人类活动起主导作用，近年来全省实施的生态建设工程对喀斯特石漠化区植被改善具有明显的促进作用。 |
| 关键词: 植被综合生态质量指数;气候变化;人类活动;石漠化 |
| DOI： |
| 投稿时间：2023-02-09修订日期：2023-05-10 |
| 基金项目:喀斯特石漠化植被生态质量变化对气候因子的响应(黔科合基础-ZK[2022]一般273)；黔科合基础-ZK[2021]一般 193；山地生态气象遥感应用系统(FY-3(03)-AS-12.13)；黔气科登[2022]06-01。 |
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| Analysis of Vegetation Ecological Quality Change and Its Driving Factors in Karst Rocky Desertification Area: A Case on Guizhou |
| ZHANG Mingxiang,LIAO Yao,YU Fei,DUAN Ying,TIAN Pengju |
| (Guizhou Ecological Meteorology and Satellite Remote Sensing Center;Guizhou Institute of Mountain and Environment Climate) |
| Abstract: |
| Based on the comprehensive ecological quality index that reflects both vegetation cover and productivity, this study researched the change and driving factors of vegetation ecological quality in karst rocky desertification area by using trend analysis、correlation analysis and residual analysis. The results showed that: (1) The comprehensive ecological quality of vegetation in karst rocky desertification area showed an upward trend form 2000 to 2021, with an upward rate of 0.7 a-1. Except for southwestern, central and northern regions, the ecological quality of vegetation increased significantly in 94.59% of rocky desertification areas. (2) The partial correlation coefficients of vegetation ecological quality index with precipitation and air temperature were mainly positive, and the significant positive correlation areas accounted for 17.48% and 68.79% respectively. The multiple correlation coefficients with climate factors were also mainly positive, and the significant positive correlation area accounts for 81.79%, the comprehensive effect of climate change was beneficial to improve the ecological quality of vegetation in rocky desertification area. (3) The change of vegetation ecological quality in karst rocky desertification area was driven by both climate change and human activities, which contributed 18.84% and 81.16% respectively, and human activities played a leading role. |
| Key words: comprehensive ecological quality index of vegetation; climate change; human activities; rocky desertification |
