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立足党中央全面推进生态文明建设的时代背景,在系统分析北京市水资源严重紧缺形势的基础上,探讨了北京市减少耕地种植面积,增加滨水林地和平原区湿地面积的生态效益和可行性,提出了北京市减耕增林增湿的空间布局和保障措施。结果表明,北京市农业用水以地下水为主,农业生产是造成全市地下水超采和环境面源污染的主要原因之一;拓展滨水林地、湿地等绿色空间可实现绿地增加固碳能力、湿地增加拦氮能力;平原湿地建设实现有效缓解城市防洪压力的同时,可为城市生态红线保护和居民休憩提供良好的生态空间;通过在山前生态涵养带、城市下游平原、城区和主干交通道路以及河道沿线等重点区域综合施策,全市可增加和改善绿色生态空间41.7万hm~2,还提出了实施减耕增林增湿战略的保障措施。
Based on the background of comprehensively promoting the construction of ecological civilization by the Party Central Committee, this paper discusses the ecological benefits and feasibility of reducing cultivated land area and increasing wetland area in waterfront and plain areas in Beijing based on a systematic analysis of the serious shortage of water resources in Beijing. , Put forward the space layout and safeguards measures for decreasing forestation and increasing forestation in Beijing. The results show that the main agricultural water use in Beijing is groundwater. Agricultural production is one of the main causes of over-exploitation of groundwater and environmental non-point source pollution in the city. Developing green space in waterfront forests, wetlands and other green spaces can increase carbon sequestration capacity and increase wetlands While it can provide a good ecological space for the urban ecological red line protection and residents’ rest. Through the ecological conservation belt in the front of the mountain, the urban plains in the lower reaches of the city, urban areas and trunk traffic roads as well as the watercourse Along the key areas such as comprehensive policy, the city can increase and improve the green ecological space of 417,000 hm ~ 2, also put forward the implementation of reducing plow by the strategy of increasing the protection of wetlands.