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城市绿地生态系统合理供水辨识分析

ISSN号：1002-2104
期刊名称：中国人口.资源与环境
时间：0
页码：136-139
分类：TV212.5[水利工程—水文学及水资源]
作者机构：[1]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038
相关基金：国家自然科学基金重点项目“社会水循环系统演化机制与过程模拟研究--以海河流域为例”（编号：40830637）;国家自然科学基金创新研究群体基金项目“流域水循环模拟与调控”（编号：50721006）.
相关项目：社会水循环系统演化机制与过程模拟研究——以海河流域为例

作者：徐鹤|褚俊英|刘家宏|秦大庸|XU He CHU Jun-ying LIU Jia-hong QIN Da-yong(State|

关键词：城市绿地, 供水量, 合理性评价, 土壤含水量, urban green space, water resource supply, rationality analysis , soil water content

中文摘要：

城市绿地因具有美化环境、降低空气污染、控制城市热岛等作用而日益得到重视。合理的城市生态供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。为统筹城市生态与国民经济发展，保证绿地健康，需要合理的绿地供水管理。本文以土壤含水量为标准。根据田间持水量、临界土壤含水童和凋萎系数三个土壤含水蟹值划分不同等级的绿地需水量，将供水量分为四个等级。建立了城市绿地供水合理性评价模型，为有效辨识供水合理性提供了参照依据。以2009年北京市城市绿地供水为例，进行了供水合理性分析，结果表明。从全年来看。供水基本合理，虽然绿地蒸散发受到一定抑制，但不影响植被生长；从逐月供水来看，个别月份存在供水过少或过多现象，影响植被生长，且不利于水资源合理利用。

英文摘要：

Urban green space has become more important for the functions of beautifying the environment, reducing air pollution, controlling urban heat islands. Rational water supply quantity can keep plants growing well and be benefltial to the rational allocation of water resources. To plan well the ecosystem and economic development, keep green space healthy, rational water supply management for urban green space is in urgent need. A rationality analysis model of water resources utilization for urban green space was established. Based on field water containing capacity, critical soil water content and wilting coefficient, the water supply in the model was classified into four grades which provided criterions for identifying the rationality of water resource supply. Beijing was taken for an example to evaluate the urban green space water supply in the year of 2009. The results showed that for the whole year the supply was rational and plants＇ growth was not influenced although evapotranspiration was inhibited. However, in some months water supply was not enough or superabundant, which inhibited plants＇ growth and was not favorable to the rational utilization of water resources.

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