Decision Analysis On Returning Farmland To Forest Or Grassland Based On Land Suitability Evaluating In The Horqin Sandy Land

Returning Farmland to Forest and Grassland is an important project that aimed at the ecological environment construction in western China.Based on the implementation of the project,this paper selects typical area in Horqin Sandy Land in the Farming-Pastoral Zone of Northern China,and uses modern spacial information technology and mathematical statistical methods to do some research.First of all, land suitability is evaluated in both qualitative and quantitative way,and then land use condition in 2000 and in 2007 are compared with the evaluating results.Furthermore,we can analyse land adjustment in 2000 and in 2007 from direction, type and distribution aspects, and assess the project of Returning Farmland to Forest and Grassland based on the actual changes in land use, especially changes in farmland, forest and grassland.At the same time,we summed up the policies,measures and experience,and deeply study on the following policies of Returning Farmland to Forest and Grassland,hoping to provide a scientific basis for the further implementation of the project and regional sustainable development in the study area or other related regions.Through research, specifical conclusions can be reached as follows:(1)The land suitability evaluation is the basis for land-use adjustment and implementation of the Returning Farmland to Forest and Grassland.(2)Through the study on land use changes since the implementation of the Returning Farmland to Forest and Grassland we found that the farmland has significantly reduced, while forest and grassland has increased significantly. At the same time, internal changes of farmland, forest and grassland are more prominent,especially grass coverage has increased greatly.These changes prove that the project achieved effective results.(3)From the direction,numbers and spatial distribution of land use changes in the past 7 years, there are still unreasonable reversed farmland. They are mainly unreasonable types to be chosen for reversed; some farmland that should be reverse to forest or grassland has not been reversed; and a little farmland that should not be reversed has reversed.This part of land should be researched in detail,and we should make land-use planning and achieve the reasonable land use in the end.(4)Through interview research,we find many land-use problems.The majority of the people have complaints about the land contracts,and they uncleared about land contracts and feel unfair in interests dividing.There still exist some problems during returning farmland to forest and grassland in Kezuohouqi Banner,such as low survival rate of afforestation, low improved utilization and the follow-up industries lagging and so on.(5)The regional ecological, economic and social benefits must be all achieved during the implementation of the Returning Farmland to Forest and Grassland.Therefore,the project should be combined with agricultural safeguard,especially with the food security plan;government should guide farmers to increase inputs to basic farmland,to use advanced production techniques and intensive management,to improve yields and to enhance food self-sufficiency protection coefficient;Integrate reversed plans and benefit-increasing plan;Develop four major industries---shrub and herb industry, sheet metal industry, medicine industry and economic forest industry.Develop following industries, and focus on the development of competitive industries.