北京土地沙化现状分析与综合治理

土地沙化是北京地区四大环境问题之一，给首都的生态安全带来严重影响，目前北京沙化面积为54 621 hm²，和1999年相比总体呈减少的趋势，但部分地区沙化面积仍在扩大，北京市防沙治沙工作依然任重而道远。因此，必须坚持人与自然和谐共存的原则，并辅之以限制人为过度经济活动的配套措施，才能有效地防治北京土地沙化。

Analysis of Land Desertification in Beijing and Integrated Cure

Land desertification is one of the environment problem in Beijing.Beijing has 54 621 hm~2 sandy land,as a whole,less than the acreage measured in the 1999,but in some district the sandy land is increasing.So the combating desertification work in Beijing is also long and important.In order to prevent and cure land desertification effectively,we must insist on harmonious coexistence principle between human being and nature and supply with corresponding measure which limit man made excess economy activity.