土地荒漠化的成因、危害及防治对策

土地荒漠化是指在干旱、半干旱和某些半湿润、湿润地区,由于气候变化和人类活动等各种因素所造成的土地退化,它使土地生物和经济生产潜力减少,甚至基本丧失.我国是全球荒漠化面积较大、分布较广、危害较严重的国家之一.近年来由于采取了一系列有效的治理措施,荒漠化和沙化整体扩展的趋势已得到初步遏制,但形势依然严峻.

Causes, Harm of Terrain Desertification And The Policy of Restoration

Terrain desertification is the terrain destruction caused by climatic changes, human activities and other relevant factors in drought and semi-drought or humid and semi-humid regions, The processes lead to the reduction and loss of potentials of land ecological and economic productivity. China is one of the countries with the biggest area of global desertification, the most widespread of distribution and the worst hazards. The terrain conditions are still critical at the present day, although the problems has been initially controlled, in expansion of desertification and sandy land, by the adoption of a series of remedy measures.