A Discussion On The Development And Management Of Small Watersheds In Mountain Area In Beijing

Small watershed comprehensive management in villages is the main form to govern the water and soil loss in China.In recent ten years,with the "sustainable development" being introduced,the strategic thinking of combining small watershed comprehensive management and economic development with resource protection is gradually realized and accepted by people.The guide line of watershed management is to achieve the sustainable development of watershed.At present,the research to small watershed is inclined to comprehensive management and environment,but the research to economic development and management is put less emphasis on.Some cases which are to analyze the economic development in small watershed have been finished,however,the comprehensive research which is to analyze the small watershed as a regional economic system is not carried out wholly.The selected topic puts emphasis on small watershed in Beijing.In it,exploring the structure,function and management of small watershed and its optimized development measures will be talked about from the concerted development of population resources.environment and economy;besides,it will give the corresponding regulating and controlling analyses.In Beijing,mountain areas cover an area of 10418k m~2,accounting for 62%of the cities whole area,and many of the area of 6640k m~2,accounting for 62%of the mountain area.After more than fifty years' management,the loss of water and soil is still large and is about4089k m~2.As a result,villagers live a poor live and there are many relatively poor villages and towns in remote mountain areas.The text mainly talks about the development and management of small watershed aiming at answering the questions above.Li Jiayu is the target in the topic.There are eight chapters in total:introduction the theoretical basis of economic development the management of environment population distribution and residential distribution.the structure of soil being used and ecological industry chain,the administration of small watershed.Demonstration studies (small watershed economic development's direction and approach in Li Jiayu) conclusion.The main achievements are the followings.There are two kinds of environment management:non-engineered measures and engineered measures.The adjusted patterns of residential areas are:migration and combination, the inside alteration and development.The soil being used should be adjusted in The ecological environmental protection function area,the slope change the ladder economical forest crops and fruits area,the conservative slope farming agriculture cultivation area different function area to propose the different structural adjustment.In order to constantly benefit from the watershed's economic system in environment,economy and social,we should arrange agriculture.Forests,herd,sideline and fishing's area based on comprehensive plan and watershed as units,and we should take comprehensive measures to protect,improve and make use of water and soil and other revival resources.Mainly through auctions four uncultivated land the right of use,the stock cooperation system,the contract,rents and so on government development forms to promote the farmer to participate in the small watershed management.