摘要
在分析我国西部自然生态环境特点的基础上，运用生态学原理和方法，对我国西部进行生态区域划分。共将我国西部划分为７个一级区、２２个二级区。并在二级区的基础上，对每一个生态区的特点、发展和保护对策进行了论述。
By taking the objective ecological system as the subject and applying the ecological fundamentals and methods, the eco-regionalization is to reveal the similar and the diversfied laws of eco-environment, and to divide the different regional units based on a full consideration of human activities. Its purposes are to provide the scientific basis for the rational distribution of the industrial structure in the different regions, the social and economic development, the evaluation on the eec-environment alld its synthetical improvement, and to provide the important theoretical bases for rationally exploiting and utilizing the regional resources, protecting the biodiversification, and controlling natural disasters, thus to serve the social and economic sustainable development. Hierarchical theory is a fundamental principle for ecosystem classification. Ecoregions are large ecosystems of regional extent that contain a number of smaller ecosystems. Besides the identities of natural ecosystems, human factor must also be considered, as it is one of the primary driving forces for most of natural ecosystems changed. As a most important strategic developmental region in China in the 21st, the economic development of Western China is nearly related to the whole national economy. However, when we take full advantage of its natural resources and develop its economy, in the meanwhile, we must also pay great attention to protect its ecological environment and guarantee the social economy reach to sustainable development. Ecological regionalization and ecological mapping of Western China can provide the framework for making policies of environmental management and sustainable development in this region. In this paper, climate (temperature, precipitation and evaporation), landforms, vegetation types, soil types, human factors and so on are selected as quantitative and qualitative indices to classify different ecoregion by using ecological principles and methods. As a result, Western China is divided into 7 ecoregions: (1) ecoregion of rain forest in tropic northern edges, (2) ecoregion of subtropical humid and sub-humid evergreen broad-leaf forest in Yunnan-Guizhou plateau, (3) ecoregion of subtropical evergreen broad-leaf forest in Sichuan basin, (4)ecoregion of northern subtropical evergreen-deciduous broadleaf forest, (5 )ecoregion of warm temperate forest-grassland in Loess plateau, (6) ecoregion of arid and sub-arid desert in Northwestern China and (7) ecoregion of alpine meadow and steppe in Tibetan plateau. Moreover, 22 sub-ecoregions are also classified under the ecoregions. Finally, the characteristics and stratagems of economic development and environmental conservation in each sub-ecoregion are discussed.
出处
《干旱区地理》
CSCD
北大核心
2000年第4期289-297,共9页
Arid Land Geography
基金
中国科学院"九五"资源与环境研究重大项目!(KZ951-B1-208)
