On the basis of making a thorough investigate and study about the concrete conditions on east erosive hilly region in HeiLongJiang province.advance an conclusion of universal significance after a thorough thinking and analysing.meat that we must follow the basic theory about ecology and their environment construct of erosive hilly region and study of continued development.The main content include: the whole theory about landforms setup.the excellent structure theory about continued development,the theory about mediateself limit of ecology system and the paid use of regenerated resources adjust and control by man.the relationship theory about soil and water conservation and continued development,the theory about the three big benifits unify of ecology.economy and society of ecology and their environment construct of soil and water conservation and synchronization development. Corrode water and soil conservation of mountain area ecological environmental construction study field more discipline that involve with sustainable development, Need to develop multi-disciplinary research. This research is directed against the particularity of the big system of mountain area, according to the ecological basic principle, Have explained from five respects that corrodes the basic theory which should be followed in water and soil conservation ecological environmental construction and sustainable development research of mountain area.
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