北京城市化进程中绿地生态系统水循环优化研究

Water cycle optimization of green space ecosystem in the process of urbanization in Beijing

北京市水资源短缺的问题已成为制约社会经济发展和影响社会稳定的重要因素之一,城市化进程和水资源利用的协调发展愈发引起重视。合理的生态用水不仅有益于植被的正常生长,对城市水资源合理配置同样具有积极意义。以实现绿地生态系统水资源合理利用为中心展开研究,量化分析2001—2015年北京城市化水平与生态用水的相互关系以及绿地生态系统水资源利用情况,继而提出绿地生态系统水循环优化措施。研究结果表明,北京生态用水规模随城市化水平的提高呈显著上升趋势;绿地生态系统作为城市生态用水的主要方面,其雨水资源利用不足是导致生态用水规模扩大的重要原因。研究结果为保障北京城市化进程与水资源可持续利用相关研究提供了参考和借鉴。

Water resource shortage has become one of the important factors restricting the economic development and social stability of Beijing City,and the coordinated development of urbanization and the utilization of water resources has attracted much attention.Rea⁃sonable ecological water use can keep plants growing well and be beneficial to the rational allocation of water resources.A study on re⁃alizing the rational use of water resources in the green space ecosystem was conduced.Based on the quantitative analysis of the relation⁃ship between Beijing’s urbanization and ecological water use and the water resource utilization of green space ecosystem from 2001 to 2015,optimization measures for the water cycle of the green space ecosystem were proposed.The results show that ecological water use in Beijing has shown a significant upward trend with the development of urbanization.Green space ecosystem is the main consumer of urban ecological water,and insufficient utilization of rainwater resources is an important reason for the expansion of ecological water use.The study results provide several lessons for policy,practice and research in order to ensure Beijing’s urbanization and sustain⁃able utilization of water resources.