期刊论文

中文

经济地理

1000-8462

2022

42

4

190-201

10.15957/j.cnki.jjdl.2022.04.021

国家社会科学基金项目(19BJY045) 湖南省教育厅科学研究项目(21B0258)

本校为第一机构

植被覆盖变化是评估生态效应与治理成效的关键性因素之一。基于洞庭湖流域2000—2019年MODISNDVI和同期气温、降水、土地利用等相关数据，运用Sen+Mann-Kendall、Hurst指数、偏相关分析、残差分析等多种方法，全面分析了流域植被覆盖时空演化与未来变化趋势，主要结论如下：（1）年际变化上，流域生长季NVDI呈分阶段波动上升趋势，植被覆盖显著增加。（2）空间分布上，流域大部分区域植被覆盖状况良好，呈“西高东低”分布特征；但未来流域大部区域植被NDVI可能呈增长放缓或退化趋势。（3）气候影响因素上，流域生长季NDVI与降水和气温变化均呈正相关，但气温对植被生长的正向促进作用强于降水。...

Vegetation cover change is one of the key factors to evaluate ecological effect and governance effect.Based on the NDVI data of the Dongting Lake basin from 2000 to 2019,and combined with the temperature,precipitation and land data of the same period,The research uses the methods of Sen+Mann-Kendall,Hurst index,partial correlation analysis,residual analysis methods together to analyze the characteristics of spatio-temporal changes and future trends of vegetation cover in Dongting Lake basin.The main conclusions are as follows:1) In terms of time scale,NDVI in Dongting Lake basin shows a fluctu...