The Usage Of GIS Analyzing Method In Agricultural Productive Potential Analyze

This paper used ArcGIS(Geography Information System) as a tool of its powerful functions to deal with and analyze data.Based on constructing databases of our country's climate,soil,agricultural statistics property and the database of fundamental geography information system,according to the principle of unique identification,connected with related space data,the whole country's database of main agricultural resources and integrative attribute are founded.After the match of the data of space and the data of attribute,superimposition,counting of space interpolation,then through coefficient correction and model operation to analyze and produce the profiles of photosynthetic productive potential,eurythermic productive potentials,climate productive potentials and the soil productive potentials of each province in China(agricultural productive potential of each province of China).The results of study are:1.The illumination conditions in most provinces of China is good,the potential of productive photosynthetic is very high.High figure zones are mainly located in the provinces on low attitude and Tibet on high elevation,low figure zones are mainly located in the Northeastern provinces,as Chong Qing,Si Chuang and Gui Zhou which are on high attitude.2.Under the influence of the monsoon climate,from July to December,it's cloudy and rainy in China's eastern provinces.Although they have less illumination than western areas which are always sunny,but because of better cooperation of temperature, illumination humidity,their agricultural productive potentials is higher than the western areas.The whole country's agricultural productive potentials is getting lower from the southeastern areas to the western and northern areas.3.The main elements to restrain agricultural productive development is shortage of water in Xin Jiang and middle eastern part of Nei Monggol and low temperature in Tibet plateau and southeastern areas. 4.The agricultural productive potentials of 26 provinces(municipalities,autonomous regions) are above 15000kg/ha,the potentials of 16 provinces(municipalities,autonomous regions) of them are above 30000kg/ha.Compare to the present productive level,they have great potentials.Considering agricultural potential features on different places,we should develop agricultural production according to circumstances.