Research On The Evaluation Of Reserve Cultivation Land Resource And Land Devolepment Based On GIS

The land resources'rigid supplication and the elastic needs for land of human make lands dear and rare, make the relations between human and land intensive, society needs development, town and country need construction, development of agriculture needs going on, each of these needs land, and maybe occupy cultivation land. For our country, keeping on a certain cultivation land is protecting the lifeblood of people. Reserve cultivation land is equilibrium of occupy and replenish. It can ensure social development,town and country construction,it also make sure the cultivation land's summation not decent.This article is studied on XinHe county in Xinjiang Aksu area, introduced XinHe County natural conditions, economic conditions and land use change, highlighting the 15 years of XinHe county land, grassland and other land changes.Established a reserve for XinHe county land evaluation system, in the past only to the natural reserve land suitability assessment based on human factors to join the economic and social indicators, such as: investment in efforts to improve the indicators, which affect the capacity will exist in theory some volatility, but after this the real test came to this indicator is desirable and effective, so this indicator can fit into more specific comprehensive assessment system, reserve land for future evaluation provides additional information to further enhance the views have some practical value.Meanwhile this paper, comprehensive evaluation of the method to evaluate the various types of land reserve to be determined, using a very simple threshold method and various indicators of non-dimensional treatment, in turn entropy into reserve land suitability evaluation, so that the evaluation index weights more objective and subjective factors to avoid bringing too much randomness.Get a final assessment of value is also more reasonable, though not new entropy method, but it is the first time for the reserve land suitability evaluation.This large map of the entire plan to do extensive use of MapGIS6.7 drawing functions, properties database management, data analysis and spatial analysis, a number of functions, MapGIS6.7 powerful graphics capabilities make the evaluation area indicators can be even more intuitive The reflected, to facilitate understanding. Attribute database management capabilities to quickly extract data related to this article. After evaluation of the new reserve land resources and the county is divided into six rating levels, including the four appropriate classes and two inappropriate categories, while not suitable for the class described the current class is not appropriate in the future can be achieved through the significant improved appropriate farming standards.Eventually come to a XinHe County of cropland resources abundant reserves, but also the overall fertility level is high enough, the main limiting factor is the extent of water and saline.This article acts according to the XinHe county reserve farming characteristic finally, gave the corresponding suggestion about the improvement and development, for example: The earlier period must achieve carries on the land leveling work, avoids the water which the land is not smooth brings, finally has the acceleration soil secondary salination evil consequence; Digs ditches, the consummation irrigation area matching facilities building; Excavates the open ditch as well as the shaft is advantageous for draining water; Carries on the network of forest belts project by against sandstorm, the improvement agricultural microclimate; Selects way science saving water irrigation methods and so on spray irrigation, drip irrigation, prevents soil secondary salination which the spate flooding irrigation brings; The construction path convenience transports each kind of agricultural essential factor; Using the plant repair's way improve soil salination characteristic, cultivates the fat soil slowly gradually. Statement: Takes the least farming, uses the least essential factor inputs to gain the most modernized agriculture benefit, the synthesis obtains: Develops the prescription farming to be possible enormous to enhance entire XinHe county's reserve farming resources and even the overall agricultural land condition and the crop output, is an item which has the high feasibility.