基于生态用水的Hargreaves模型修正

邱微^1,2, 樊庆锌¹, 王明轩¹, 韩文滔¹, 彭雪璇¹

(1.哈尔滨工业大学 市政环境工程学院,150090哈尔滨; 2.哈尔滨工业大学 城市水资源与环境国家重点实验室,150090哈尔滨)



摘要:

生态需水量核算问题中,国内外常用的几种潜在蒸散量计算模型具有一定的限制性,为此,结合东北地区特点,以哈尔滨市为例,选取时间序列指标数据,对比分析常用计算模型的适用性及不足,提出修正并优化Hargreaves(HM) 模型的方法并进行参数修定．修正后HM模型的计算结果与PM模型的相关系数达0.826,相对均方差为0.119,相关性较好,可满足哈尔滨市蒸散量的计算．

关键词:  生态需水  HM模型  修正模型

DOI：10.11918/j.issn.0367-6234.2014.02.005

分类号:

基金项目:国家自然科学基金资助项目 (51208143); 中央高校基本科研业务费专项资金资助项目 (HIT.NSRIF.2012086);城市水资源与水环境国家重点实验室自主课题(哈尔滨工业大学) (2012TS03);黑龙江省博士后科研启动金资助项目(LBH-Q12074,LBH-Q12002).



Amending the Hargreaves model based on ecological water

QIU Wei^1,2, FAN Qingxin¹,WANG Mingxuan¹,HAN Wentao¹, PENG Xuexuan¹

(1.School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090 Harbin,China; 2.State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology, 150090 Harbin,China)

Abstract:

Many researches focus on the ecological water demand accounting problem. But it has a certain restriction of several potential evapotranspiration models commonly used in China and abroad. Combined with the northeast area characteristic, the paper has chosen Harbin as the example. It has selected a series time of indicator data and compared the applicability and disadvantage about these models. The paper proposes the method to amend and optimize the Hargreaves (HM) model. It also revised the parameters. The correlation coefficient of amending HM and the PM calculations is 0.826, and the relative mean squared deviation is 0.119. It has a good correlation of calculating the evapotranspiration calculation of Harbin. And it will lay the foundation for the quantitative accounting ecological water demand of the northeast region.

Key words:  ecological water demand  Hargreaves model modification  amend model