摘要
以永州地区为研究区域,利用NASA提供的MOD13Q1-NDVI数据（2000—2014年）研究其植被变化特征。结果表明,永州地区植被指数处在0.6-0.8段的受外部条件的影响较小,而植被指数在0.8-1.0段的受外部条件的影响较大。植被指数在0.4-0.6段的走势与0.8-1.0段的大多数年份相反,植被指数在0.2-0.4和0-0.2两段所占比重一直处于一个比较低的水平。总体来说,永州地区的植被指数历年一直比较高,历年平均值为0.701。
Taking Yongzhou area as the study region,the changes of vegetation characteristics were studied based on MOD13Q1-NDVI data provided by NASA（2000—2014）. The results showed that the vegetation index in 0.6-0.8 of Yongzhou area was less influenced by external conditions,and the vegetation index in 0.8-1.0 was more influenced by external conditions. In most years the trend of vegetation index in 0.4-0.6 was contrary to that of 0.8-1.0. The proportion of vegetation index in 0.2-0.4 and 0-0.2 were at a low level. In general,the vegetation index of Yongzhou area has been always relatively high over the years,and the average value was 0.701.
出处
《甘肃农业科技》
2015年第3期27-29,共3页
Gansu Agricultural Science and Technology
