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地理科学  2013 

气候因子和人类活动对重庆市植被覆盖变化的影响分析

, PP. 1390-1394

Keywords: 植被覆盖,NDVI,气候因子,人类活动,重庆市

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Abstract:

基于SPOT/VGT数据、气象站点数据,运用影像处理、时滞相关法分析重庆市1999~2010年期间植被覆盖的时空变化及其对气候因子和人类活动的响应。结果表明,植被覆盖近10a明显增加,特别是大规模进行退耕还林时期增加最为迅速;植被覆盖年内变化与降水、气温变化具有显著相关性,并存在一定的滞后期;植被覆盖年际变化具有显著的空间差异表明人类活动是不可忽视的影响因素。初步分析表明,人类活动,特别是农业生产、耕地保护和植被生态建设等是12a间重庆市植被覆盖上升的重要因素。退耕还林、封山育林等生态工程建设的生态效应正在呈现。

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