退化草地土壤理化性质的研究简述

RESEARCH ADVANCE ON THE SOIL PHYSICAL-CHEMICAL PROPERTY OF DEGRADED GRASSLAND

草地退化是整个草地生态系统的退化,土壤退化是草地退化的具体体现,是比植被退化更严重的退化,土壤严重退化后整个草地生态系统的功能会遗失殆尽。本文在阐述退化草地土壤理化性质相关概念的基础上,重点综述了退化草地土壤物理、化学性质方面的研究,提出退化草地理化性质方面存在的问题。认为在改良退化草地时,应考虑土壤退化程度,导致退化的主导因子及土壤性状等因素,并且对研究退化草地土壤的理化性质需长期持续研究。

The grassland degradation is the one of whole grassland ecosystems degradation. The soil degradation is the concrete expression in grassland degradation and is seriously more than the vegetation degradation. If the soil deteriorates seriously, the whole function of the grassland ecosystem would almost exhaust. On the basis of the concept of grassland soil physical and chemical property, this paper discuss research advance about the soil physical and chemical property in the grassland degradation, at the same time, put forward the problem about this. In improving degraded grassland, the degree of soil degradation, main factor and the soil properties is considered main factor. And the soil physical and chemical property is be researched over a long period of time.