耦合多物种生态流速的生态需水计算方法

发布时间：2018-02-11 23:17

本文关键词： 多物种生态需水优势度指数生态流速小清河　出处：《北京师范大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：河流生态恢复是经济可持续发展的关键,生态需水满足是河流生态系统稳定的前提.生态需水研究是目前生态学和水文学、水资源学研究的热点,国内外学者从不同角度出发提出了多种计算生态需水的方法,并基于这些方法对不同尺度研究区进行了生态需水量的研究计算.但在现有计算方法中缺乏针对多个物种流速需求耦合的研究,会对计算结果的准确性产生影响,继而影响流域水资源调控.本文针对此问题引入优势度指数建立多物种生态流速耦合模型,为生态需水的计算提供契合生态系统整体需求的解决方案.该方法不受地域因素影响,具有较广的适用性.应用于小清河流域3个典型断面——黄台桥、岔河、石村,结果显示:黄台桥断面生态需水为12.33m~3·s~(-1);岔河断面生态需水为4.40m~3·s~(-1);石村断面生态需水为14.53m~3·s~(-1).与Tennant法对比,本研究方法计算结果合理,且更能反映鱼类种群,而非单一物种对水量的实际需求.
[Abstract]:The ecological restoration of rivers is the key to the sustainable development of economy, and the ecological water demand is the premise of the stability of the river ecosystem. The ecological water demand research is the focus of ecology, hydrology and water resources research at present. Scholars at home and abroad have put forward a variety of methods to calculate ecological water demand from different angles. Based on these methods, the ecological water demand of different scale study areas is calculated. However, the lack of coupling research on the velocity demand of many species in the existing methods will have an impact on the accuracy of the calculation results. In this paper, the dominance index is introduced to establish a multi-species ecological velocity coupling model. This method is applicable to three typical sections of Xiaoqing River basin-Huangtaiqiao, Cha River and Shicun, which are not affected by regional factors. The results showed that the ecological water requirement of Huangtai Bridge section was 12.33 m ~ (3) 路s ~ (-1) ~ (-1), that of Cha River section was 4.40 m ~ (3) 路s ~ (-1) ~ (-1) and that of Shicun section was 14.53 m ~ (3) 路s ~ (-1) ~ (-1). Compared with Tennant method, the result of this study was reasonable and could reflect the fish population. Rather than the actual water demand of a single species.
【作者单位】：北京师范大学地理学与遥感科学学院;北京师范大学水科学研究院;中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室;东营市水文局;济南市水文局;
【基金】：国家自然科学基金资助项目(41271414) 北京市共建项目专项资助项目
【分类号】：TV213.4;X143

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