关键词: 生态经济, 综合研究, 黑河流域

Abstract: Vulnerable environment and lagging economy are the main characteristics of the ecological economic system in Heihe River watershed located in the arid region of Northwest China. The shortage of water resources has become a main limiting factor for the sustainable development in the watershed. With population increasing and economy growth and during the development of water resources, there are many problems such as water used for environment impropriated by economic sectors, the distribution of water projects being unreasonable, conflicts among different stakeholders often occurring, and the management mechanism of the development of water resources needing reform, etc. Due to the interaction between ecological function and human economy, there exist practical and theoretic significances to study ecological economic problems occured in Heihe River watershed from the view of ecological economic system. Water resources are not only the most important limiting factor for the development of watershed’s economy, society and environment, but also the bridge between economic sub-system and ecological sub-system.The framework of the integrated study of ecology and economy, whose center was the sustainable development of water resources, was put forward based on the summary of international study about ecological economics in watershed scale and the relative studies in Heihe River watershed. The framework consists of five portions as follows: (1) study of simulation model of ecological process; (2) study of modeling the development of water resources based on macro-economy; (3) study of sustainable development of water resources under changing environmental conditions, including natural condition (climate change, etc.) and social-economic conditions (including China’s entering into WTO, etc.); (4) study of managing the sustainable development of water resources; (5) and study of decision-making support system, etc. Finally, it is identified that the following key problems should be solved: the construction of integrated ecological and economic accounting; the development of simulation model of ecological process in unit scale and transferring the model from unit scale into region scale, even the whole watershed scale; the valuation of ecosystem services and damage of eco-environment; the coupling of ecological model and economic model; the development of common model environment; and the policies of water resources management under market-economy system, etc.

Key words: ecological economy, integrated study, Heihe River watershed