摘要
在 2 2 0～ 136 8A .D .期间内累计有 85 9年 ,全部黄土高原在非汉族的管辖之下 ;而其余 2 89年 ,该地区的某些部分依然被非汉族所控制。非汉族进入黄土高原以后 ,土壤侵蚀速度随放牧地的扩张而减小。在隋朝和唐朝期间( 5 81～ 90 7A .D .) ,黄土高原的生态环境较当今温暖湿润 ,植被更为繁茂 ,林地约占整个黄土高原面积的 2 5 %。在明朝和清朝期间 ( 136 8～ 1911A .D .) ,黄土高原的大部分森林被破坏 。
All of the Loess Plateau were ruled by non Han Nationalities for 859 years cumulatively during 220～1368A.D.; and some parts of this region for another 289 years. When non Han Nationalities ruled the Loess Plateau, the rate of soil erosion decreased with the expansion of grazing land. During Sui and Tang dynasties(581～907A.D.), the ecological environment of the Loess Plateau was warmer and moister than it is today, there was more luxuriant vegetation, and the forest land occupied about 25% of the entire Loess Plateau. During Ming and Qing dynasties(1368～1911A.D.), the most of forest on the Loess Plateau was damaged, and the increasing rate of soil erosion accompanied by the disappearance of natural vegetation.
出处
《第四纪研究》
CAS
CSCD
北大核心
2004年第2期184-190,共7页
Quaternary Sciences
关键词
黄土高原
土地利用
环境变迁
民族变迁
Loess Plateau, nationality, land use, environment, variation
