2000一2021年南四湖流域归一化植被指数时空变化特征及其气候响应

打开文本图片集

中图分类号：Q948.112 文献标志码：A

Abstract：Tostudythe important drivingfactors of the waterecology inNansiLakeBasin，Theil-Sen median trendanalysis， Mann-Kendalltest method，partial coelation analysis，and Pearsoncorrelationanalysis wereused toexplore thespatiotemporal evolution characteristicsof vegetationcoverage inNansi Lake Basinand itsresponses to meteorological factors suchas precipitation，temperature，wind speed，and evaporation.Theresultsshowthatthe multi-year average growthrate of normalized difference vegetation index（NDVI） in Nansi Lake Basin is 0.31% ，and the average growth rate of NDVI in the growing season is 0.13% . The seasons with NDVI growth rates from largest to smallest are winter，spring，autumn， and summer. The NDVI in areas accounting for 85.45% of Nansi Lake Basin shows an increasing trend，but exhibits a degradation trendaround urban areas.Climate factorshave obvious diferences in their impactsonthe spatio-temporal evolution of NDVI.Annual NDVIchanges are more significantlyafected bythe temperature，while monthly NDVI is significantly influenced by precipitation and temperature.

Keywords：normalizeddiference vegetation index；Theil-Senmedian trendanalysis；Mann-Kendalltest；climate response；Nansi Lake Basin

湖泊是陆地生态系统与水生生态系统的连接点，是区域内的汇，对区域生态安全、经济发展意义重大。（剩余10858字）