摘要
针对目前我国荒漠化现状、动态与成因的认识还比较模糊的状况 ,综述了建国以来我国荒漠化发展趋势 :50年代到 80年代中期荒漠化呈加速扩展趋势 ;80年代以来 ,我国荒漠化在大部分地区发展非常迅速 ,只是在局部地区有所逆转。荒漠化发展最快、危害最严重的有两类地区 :一是位于我国北方半干旱和半湿润区的农牧交错带 ,二是我国北方干旱区内沿内陆河分布或位于内陆河下游的绿洲地区。脆弱的生态环境、过高的人口压力及落后的生产技术和粗放的管理是导致我国荒漠化发生的主要因素。
The current status, dynamics and causes of desertification in China were analyzed and summarized. From the 1950s to mid 1980s, the desertification developed faster and faster; Since 1980s, it has spread rapidly in most areas but rehabilitated in some local regions. There are two main areas with the fastest spreading and the most severe hazards of desertification: one is the agripastoral transitional zone in semi arid and sub humid areas in northern China, another is the oases along inland river or in the lower reaches of inland river in arid area in northwestern China. Vulnerable eco environment, too high population pressure, and backward techniques and extensive management are the main causes leading to desertification.
出处
《林业科学研究》
CSCD
北大核心
2001年第2期195-202,共8页
Forest Research
基金
国家自然科学基金重大项目!( 3 9990 4 90 )
关键词
荒漠化
沙质荒漠化
农牧交错带
绿洲
现状
动态
成因
desertification
sandy desertification
the agri pastoral transitional zone
oasis
