期刊论文

中文

信阳师范学院学报(自然科学版)

1003-0972

2015

3

368-371

10.3969/j.issn.1003-0972.2015.03.014

湖南省高校创新平台开放基金项目（14K115）；

本校为第一机构

利用2000—2014年九万山地区MODIS数据，采用均值变化法分析了九万山国家级自然保护区连续15年NDVI的动态变化．结果显示：九万山自然保护区植被总体长势较好，年均NDVI均在0．54以上；从时间角度看，NDVI呈现缓慢增加趋势，期间出现1个峰值和1个最低值；从空间角度来看，九万山南部NDVI最高，北部其次，中部最低，植被覆盖以中、高植被覆盖区为主，随时间变化，NDVI在空间上表现出波动变化；ND－VI年代际变化率表明，九万山NDVI值在2000—2014年既有增加，也有减少．其中6年年代际变化率为负值，其余年份为正值，2009年达到变化率极值．

Based on the continuous MODIS data from 2000 to 2014, the variations of NDVI in Jiuwan mountain were analyzed.The results showed that the plantations were growth well, the annual mean NDVI were all above 0.54, the NDVI showed a slow increase trend which varied with years.From the time perspective, the vegetation cover show a slow upward trend, a peak value and a minimum value occurs during respectively 2008, 2009;From space point of view, the south of this area vegetation coverage is highest, North Second, the central part is the lowest, the vegetation cover mainly was in medium and high;Veget...