摘要
在建立红原县草地植被覆盖遥感监测和评价指标体系的基础上,分析了红原县2003、2006、2009、2012年草地植被覆盖度变化的空间动态演变过程和趋势。结果表明,红原县高覆盖草地、低覆盖度草地和极低覆盖度草地面积分别减少了178 324.06km2、3 652.98 km2、2 816.01km2,中高覆盖草地和中覆盖草地面积分别增加了154 385.4km2、30 407.64km2。反映了红原县草地植被覆盖整体上呈现由两级向中间级演替的趋势。
On the basis of monitoring and evaluation indices system for vegetation fraction this paper has a discussion on dynamic change and developmental trend of vegetation fraction in the Hongyuan Grass Land during 2003-2012 with decrease in high, low and lower coverage grassland by 178324.06hm^2, 3652.98 hm^2 and 2816.01 hm^2 and increase in medium-high and medium coverage grassland by 154385.4 hm^2 and 30407.64 hm^2.
出处
《四川地质学报》
2014年第4期615-619,共5页
Acta Geologica Sichuan
关键词
草地植被覆盖
信息提取
动态变化
红原县
vegetation fraction
grass land vegetation coverage
information extraction
dynamic change
Hongyuan
