首页|基于MODIS NDVI的2001-2015年甘肃省天然草原的时空动态监测

基于MODIS NDVI的2001-2015年甘肃省天然草原的时空动态监测

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
利用MODIS NDVI数据，通过对草原植被指数及其变异系数的分析，对甘肃省各市州各类天然草原近15年（2001—2015）植被情况的时空变化规律和生态系统脆弱性进行了研究。结果表明：近15年，甘肃省天然草原区NDVI平均值整体呈上升趋势，只有甘南州略呈整体下降趋势。甘肃省天然草原非常稳定的面积占26.8%，稳定的面积占44.9%，脆弱的面积占23.5%，很脆弱的面积占4.8%。甘肃省南部、祁连山沿线为稳定区域，兰州和白银、山丹县、肃南县西北角为三片脆弱区域，河西地区草原稳定性成条带分布，河东地区成块状分布。
Temporal and Spatial Dynamic of Grassland Based on MODIS NDVI during 2001-2015 in Gansu Province
Using MODIS NDVI data,through the analysis of grassland vegetation index and coefficient of variation,the space-time change rule of vegetation and the ecosystem vulnerability in the last 15 years(2001—2015)on all kinds of natural grassland located in Gansu province were studied. The results showed that the trend of NDVI average on grassland in Gansu province overall was rising for the past 15 years,that of Gannan was falling in overall slightly;the ratioes of very stable,stable,vulnerable and very vulnerable area were 26.8%,44.9%,23.5% and 4.8% respectively;the Southern Gansu and the area along the Qilian Mountains were the stable region;the grasslands in Lanzhou and Baiyin,Shandan,northwest Sunan County were vulnerable;the ecosystem vulnerable region was in the Hexi Corridor of Gansu with a banding distribution,and a block distribution was in the Hedong region of Gansu.

Gansu provincegrasslandgrassland-typeNDVIcoefficient of variationtemporal and spatial dynamic

王炳煜、韩天虎、孙斌

展开 >

甘肃省草原技术推广总站，兰州 730010

甘肃 天然草原 草原类 NDVI 变异系数 时空动态

2016

10.3969/j.issn.2095-3887.2016.04.011

中国草食动物科学
中国农业科学院兰州畜牧与兽药研究所

中国草食动物科学

影响因子：0.61
ISSN：2095-3887
年,卷(期)：2016.36(4)
  • 2
  • 7