沙质荒漠化,亦称沙漠化。是指在具有沙质地表物质组成的干旱、半干旱地区,由于自然和人类活动,使原来非沙质荒漠地区出现以风沙活动为显著特征,从而导致土地生产力衰退或丧失,并产生荒漠景观的生态环境退化现象。气候变化和人类活动是导致沙漠化的两个主要驱动力,前者是主导因素,后者是诱发因素。
狭义荒漠化是指沙质荒漠化(Sandy desertification),即沙漠化,它指的是原本不是沙漠地区出现类似沙漠景观的自然环境退化过程和原有的固定、半固定沙丘活化起来,以及历史时期的沙丘前...
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沙质荒漠化灾害是我国北方农牧交错区最为严重的灾害之一。
Sandy desertification hazard is one of the most devastating hazards in the agro-pastoral region in Northern China.
宁夏中部风沙区的沙质荒漠化在历史时期,尤其是本世纪50年代以来,具有明显扩展的趋势。
There is an obvious developing tendency of sandy desertification in the blowing sand region of middle Ningxia in historical time, especially since 1950's.
甘肃省地处我国西北内陆腹地,由于自然及人为因素的作用,造成省内沙质荒漠化土地广泛分布。
Gansu Province is located in the inner part of Northwest China. Because of natural and man made factors, sandy desertification lands are extensively distributed within the Province.
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