基于GIS技术规划城市节水型绿地系统的研究
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  • 英文篇名:City water-saving green space system planning based on GIS technology
  • 作者:刘慧民 ; 宫思羽 ; 邹铁安 ; 裴盈欣 ; 浦杰 ; 姜珊 ; 王雪娜 ; 符兴源
  • 英文作者:Liu Huimin;Gong Siyu;Zou Tiean;Pei Yingxin;Pu Jie;Jiang Shan;Wang Xuena;Fu Xingyuan;College of Horticulture and Gardening,Northeast Agricultural University;College of Resources and Environment,Northeast Agricultural University;Zhicheng Patent Agency Firm in Dalian;
  • 关键词:降雨 ; 需水量 ; GIS ; 绿地 ; 雨水资源 ; 哈尔滨 ; 规划 ; 节水
  • 英文关键词:rainfall;;evapotranspiration;;GIS;;green space;;rainwater resources;;Harbin;;planning;;water-saving
  • 中文刊名:NYGU
  • 英文刊名:Transactions of the Chinese Society of Agricultural Engineering
  • 机构:东北农业大学园艺园林学院;东北农业大学资源与环境学院;大连至诚专利代理事务所;
  • 出版日期:2019-03-23
  • 出版单位:农业工程学报
  • 年:2019
  • 期:v.35;No.358
  • 语种:中文;
  • 页:NYGU201906034
  • 页数:9
  • CN:06
  • ISSN:11-2047/S
  • 分类号:287-295
摘要
为实践海绵城市理念,充分利用雨水资源,为哈尔滨市松北区核心区规划具节水功能的绿地系统,该文利用GIS技术,结合彭曼公式,计算研究区可收集雨水资源量和绿地植物需水量,并定位节水绿地位置和规划节水绿地系统。研究区降水量在485~671 mm间,6—8月降雨量占全年降水量的66.4%;研究区年可利用雨水量512.68万m3,雨水资源潜力巨大;5—10月研究区绿地植物需水总量639.71万m~3,同期可收集雨水总量456.17万m~3,满足植物需水量的71.31%。建立研究区DEM模型,将坡度3°~15°间的绿地确定为渗透绿地,坡度3°以下的绿地确定为集水绿地,确定了研究区节水绿地分布图,可建节水绿地面积1 664.19 hm~2,占研究区总面积的37.10%;以节水绿地为主体,结合了水利科学和地理信息科学理论知识,优先规划了能利用城市雨水资源的节水绿地系统,使远期绿地率达43%。
        In city green space planning, plant evapotranspiration(ET) and rainwater supply haven't considered. In this study, city water-saving green space system was planned based on GIS technology by considering the plant ET and rainwater supply. We would take full advantage of rainwater resources and plan ecological green space system with water-saving function for the core area of Songbei in Harbin. The GIS technology was used for extraction of underlying subsurface of collectable rainwater for calculation of utilizable rainwater. Plant ET was calculated by Penman-Monteith formula. The results showed that the rainfall in the study area was concentrated in a range of 485-671 mm. The average rainfall of 30 years was 524.5 mm. The rainfall maximized in the year of 1994(524.5 mm) and minimized in the year of 1989(345.5 mm). The rainfall from June to August accounted for 66.4% of the annual rainfall. Among 5 levels, light and moderate rain were the main levels of rainfall and total of them accounted for 69.3% of the total rainfall. Rainwater resources utilization was annually 5 126 800 m~3. The total of the plant ET was annually 6 397 100 m~3 from May to October while in the same time the total amount of rainwater could be collected 4 561 700 m~3. The rainwater resource could reach 71.31% of plant ET. Water demand of plants was mostly consistent with rainfall period. The rainwater harvesting amount in July and August could fully meet the requirement of water by plants, however, the rainwater was less than the required water by plants in the other months especially in May. The rainwater harvested in May only accounted for 28.35% of plant ET. The distribution map of water-saving green space of study area was built up. The green space with the slope between 3° and 15° was designed as the infiltration type greenbelt, and the slope less than 3° was as the water-collecting green space, and by the DEM model, the area of potential water-saving green space could reach 1 664.19 hm2, which was 37.10% of the research area. By using the theory of hydraulic engineering and geographic information science, and taking the water-saving green space as the main body, the water-saving green space system with using rainwater resource was planned for the study area. The system structure was one green ring, three green belts, three vertical and three horizontal green belts, one green isolation belt, one green core, one green region, two green spaces and multiple green points. Five basic types of green space were planned for the study area with park green space(19%), production green space(2%), protective green space(8%), affiliated green space(10%) and the other green space(4%). So the green coverage rate could reach 48% and park coverage rate would reach more than 85%, and the long-term green space rate would reach 43%. This paper showed a method for planning urban green space system with water-saving ecological function so that the water resources in urban could be fully utilized.
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