Studies On LAnd Utilization Changing Mechanism And Countermeasure In HLJ

In Heilongjiang province, there is the biggest natural forest area in China, and there are vast Songnen Plain and Sanjiang Plain.On people's impression,it is in this region that there is vast primeval forest, wide prairie and fertile black field.As a famous productive base of log and commodity grain in China, Heilongjiang province has made a great contribution to our country. Land areas of this region is large, the areas per person of field and woodland are the biggest in the whole country. In 1996,the area per person of field is 0.32 ha, is the 2.9 times to whole country; the area per person of woodland is 0.56 ha, 3.4 times to whole country. Percentage of forest cover is 46%, over 3 times to the whole country. However, Heilongjiang province lies in the Frigid Zone, and agricultural climate condition is worse. The input in the agriculture is not enough,and basic field installation weakens. Because of all above, woodland, grassland and wetland have been developed to field under the final goal of foodstuff production for a long time,in the direction of country policy and on the drive of farmer's profit. The land utilization environment has been changed greatly after development and construction for 50 years since P.R.China establishment. RRXhina will enter WTO, particularly, that will affect to Heilongjiang agriculture greatly, so the large adjustment will have been done in the land utilization composition and direction.On this essay, the course of changeable history of land utilization composition is set about, then, correlation analysis on changing to land utilization composition from 1986 to 1996 has been done, at the same time, analyses and forecasts of the land utilization trends has been finished. On the basic of analysis and evaluation on natural environment of land utilization and on quality changing of land ecology, this essay finds out the course and mechanism of land utilization and provides basis to designing scientific policy decision on land utilization and development on valid renovation measure.On the essay, duration changing and space composition varying on land utilization is set about, Then, on the basic of analysis on natural factors and social economic factors affected to land utilization, by which regional changing trend on potential productivity of field in Heilongjiang have been studied, and adoption to correlation analysis and dustering the general policy of the development and protection to land utilization of Heilongjiang province is provided. This project provides the important theoretical basis on realization of the execution for goal of generally economic development, on establishment one the important productive base of green foodstuff and food production, on utilization to land resources sustainable and development of social economics sustainable.