土地生态系统健康研究的主要内容及面临的问题

On major contents and problems of land ecosystem health research

生态系统健康研究是资源环境可持续利用研究中的一个热点。在归纳土地生态系统具有尺度的宏观性、对象的地域性、空间的开放性和动态性、问题的复杂性等特征的基础上,提出了开展土地生态系统健康研究的内容应包括土地生态系统健康的机理、评价和管理等三个主要方面。结合我国的土地资源状况,指出我国开展土地生态系统健康研究面临着包括人口密度过大,土地资源压力大;我国地域辽阔,气候类型多样,社会经济区域发展不均衡,全国各地土地生态系统的区域分异性很强等主要问题。

Ecosystem health research is one of the pivot research fields on resources and environments. In this paper, Based on char- acters of land ecosystem, the major contents of land ecosystem health research were put forward, which including the mechanism, evaluation and management of land ecosystem, and according to the land resource positions in China, the primary obstacles such as high population density, land ecosystem diversity, were discussed.