摘要
20世纪50年代以来我国历经了4次草原大开垦,约有1930多万hm2优质草原被开垦,结果引起了草原大面积的退化、沙化和荒漠化。
More than 1930 hectares of grassland were reclaimed during the past fifty years and it caused the degeneration and sandification of great amount of grassland resources in China.
出处
《中国草地》
CSCD
2005年第6期61-63,共3页
Grassland of China
关键词
草原
开垦
危害
Grassland
Reclamatiom Harm
