On the basis of studying basic connotation and characteristics of land continuous utilization,it is said that effective controlling,compensation,market allocation,concentrate land-using,dynamic balance and dynamic monitoring mechanism should be set up in order to realize land-using continuously.
Through analyzing the present situation of water resources developing and utilization of Nanning city,the factors of restraining Nanning city WR's possibly continuous utilization and countermeasures were expounded here.
Assessment of the populations of threatened species, development of an appropriate strategy, action plan for the conservation and sustainable utilization of such components of plant diversity are suggested.
The paper concludes that traditional ecological knowledge systems and institutions could serve as entry points into the sustainable utilization and management of natural resources.
The result showed that the land resource sustainable utilization ability in Lezhi County is belong to Second level (better sustainable).
There were 16 indexes orderly become major affect factor to land sustainable utilization of Lezhi county in indicator system, of which there are 8 obstacles indexes exist both in 1990 and 2001.
Using an index method, we conclude that the two counties are critical in the sustainable utilization of arable land.
Analyses of P in 22 leachate collections and distribution of both organic and inorganic P in column sections revealed the mechanisms of P removal, the influence of differing soil properties, and the effect of continuous utilization.