生态环境问题 自然灾害（Eco-environmental problems, natural disasters）.doc

生态环境问题 自然灾害（Eco-environmental problems, natural disasters） 22, the ecological environment problems 1, soil erosion problems Typical areas in China: Loess Plateau - causes: (1) natural reasons: (1) monsoon climate, precipitation concentration, heavy rainfall in summer; surface vegetation is scarce; third, loess soil is loose (2): man-made destruction of vegetation; the unreasonable farming system (round the shortage); mining. Control measures: (1) to compress agricultural land, expand the planting area of forest and grass; secondly, afforestation. Governance significance: to do the adjustment of the industrial structure, make the farming development, can increase the income of farmers, promote local economic development, improve the living conditions of farmers, improve the quality of life; is conducive to improve the local ecological environment, Jian Liliang ecological system; establish ecological agriculture mode, is conducive to the promotion of ecological and the sustainable development of economy. 2. Desertification Typical areas of China: Northwest China (Xinjiang, Qinghai, Inner Mongolia and other places) Causes: (1) natural causes: in inland areas, less precipitation; the global warming, strong evaporation; the rodent, a plague of locusts. (2): the anthropogenic causes of overgrazing, excessive cutting, excessive reclamation; the unreasonable use of water resources; the traffic engineering construction improper protection. Control measures: laws and regulations, strengthen the management of the establishment of grassland protection control; carrying capacity; to create a Three North Shelterbelt Construction; returning farmland to forest and grassland; grassland construction; promotion of rotational grazing; prohibit the felling of seaweed etc. Governance significance: to do the adjustment of the industrial structure, make the farming development, can increase the income of farmers, promote local economic development, improve the living conditions of farmers,