关键词: 黄淮海地区, 跨流域, 系统保护规划, 湿地生态系统, 保护网络, 优化体系

Abstract: Serious situations and impacts of water yield reduction in Lijiang River basin are illustrated, according to investigations at the upper reaches of the river basin and in Guilin city. Based on long-term forest hydrological research, it is fully expounded that water yield reduction is induced with severe deforestation. From the strategical point of view, it poses ten comprehensive approaches, which are of significance in both theory and urban ecological construction.

Key words: Huang-Huai-Hai Region, inter-basin, systematic conservation planning, wetland ecosystem, conservation network, optimized system