土地荒漠化的现状与治理方法（Present situation and control method of land desertification）.docVIP

土地荒漠化的现状与治理方法（Present situation and control method of land desertification） Harm and control measures of land desertification Abstract: the control measures of land desertification is not only a major ecological and environmental problems, a sustainable social and economic development is a very serious problem facing our country. Desert and desertification area in China is about 1 million 607 thousand square kilometers, accounting for 16.7% of the land area. The desertified land area of China is 2460 square kilometers per year rate of growth, but also accelerate the trend of expansion. Desert experts, China researcher at the cold and Arid Regions Environmental and Engineering Research Institute Fan Shengyue quite concerned about this. He suggested in an interview with reporters recently: Jigzhi effect is not significant, measures to reflect, should develop new ideas of desertification control, efforts to form the ecological economic model of desertification control. Keywords: land desertification; harm; introduction: the interaction between human activities and natural environment of a system is largely embodied in human land use and extent. Due to the increase of population and the progress of science and technology, human demand for natural resources utilization increase become necessary and possible, and gradually in human relationship in the promotion of human activities in the initiative and control force. In many cases, it is human progress in the effective use of resources. But also because of unreasonable use, process changes on resources and environment in different degrees, and even cause adverse gradient control environment or mutation, such as greenhouse effect gases increase, the river flow, fire, reservoir earthquake, soil erosion, and desertification is more obvious as an example. 1 of the land desertification status and harm 1.1 present situation. Our existing desert land of 1 million 689 thousand square kilometers, accounting for 17.6% of the land a