The Appraise Target System Study Of Farmland Quality Dynamic Balance In Different Agricultural Ecotype Section

It is primary strategic objective of the management of present land of our country that the cultivated land accounts for the dynamic balance, it is the most effective measure of realizing the general quantity dynamic equilibrium of cultivated land. Cultivated land at present is dynamic balance for a lot of question , it is how to take into cultivated land and supplement quality of cultivated land to weigh to account for, guarantee to account for a very important link of dynamic balance . Province land range is dynamic balance to take key work to dynamic balance in the future to take to realize the quantity of cultivated land - mass balance as foundation, farmland quality take dynamic balance at the foundation in realizing the same agricultural ecosystem, realize different agricultural ecotype section farmland quality dynamic balance is the development trend in the future to account for.It account for dynamic balancing is lack cultivated land, dynamic by criterion, cultivated land of quality and not examined mechanism of dynamic farmland qualityand and lack pertinence to compare, make the quality of supplementing the cultivated land difficult to guarantee , the overall quality of newly-increased cultivated land falls and causes the ecological environment of some areas to worsen.This research has analysed present general quantity dynamic equilibrium of cultivated land of our country and cultivated land and accounted for and dynamic the problem existing in the balance in detail, the analysed cultivated land at the same time accounted for dynamic balance and farming land to grade and define the level with the question of linking up of appraising the achievement, it have accounted for the definition of the dynamic balance and done deeper analysis to the cultivated land. Grade the achievement as the foundation with the farming land mainly, regard as the linking up the criterion effectively of the two, according to characteristic of area , choose Hebei tertiary index district as the dynamic area , balance of quality evaluation to take for cultivated land. Unifies the current farming quality appraisal and the farming occupies makes up the balance mass appraisal present situation and the development tendency, formulated the different agricultural ecology area farming to occupy makes up the quality appraisal target system, target system feasibility. It has established the different target area land utilization coefficient equivalent sector commeasurability appraisal, causes the different target area agriculture to use between the natural quality to have the commeasurability, increased thefarming to occupy makes up the balance the spatial span.