关键词: 陆面过程模式, 概述, 环境生态, 开发自然资源, 中国西北

Abstract: In this paper, the study methods of land-s urface processes parameterizations model were summarized and established, which can be used to study the interaction between the land-surface physical processes of soil and vegetation types which make up the Earth surface. In the model, improvements of soil structure parameterization and land-surface processes turbulence flux parameterization under different underlying surfaces allowed an extend ed class of terrain types to be included. The air-land system consists of three components: the atmosphere near the surface, the canopy and the active layer of soil. The soil is divided into four layers: the upper two layers correspond to those respectively showing diurnal and seasonal variations of temperature, and the root system of vegetation is evenly distributed in these two layers. Temperature and moisture in the deepest layer are left to keep their climatic means values. This assumption is much satisfactory when the simulation periods are not too extended. The land-surface processes parameterizations model is able to simulate the balance of energy for different climatic zones. It has particularly important instruction for our country in the study of atmosphere, environment ecology and to exploit natural resources in developing northwest China.

Key words: land-surface processes model, summary, environmental ecology, natural resources development, northwest China