长江科学院院报 ›› 2018, Vol. 35 ›› Issue (8): 27-33.DOI: 10.11988/ckyyb.20170199

• 水资源与环境 • 上一篇    下一篇

土地利用变化下的水文响应及其可检测性分析

张涛1,刘羽婷2,杨欣玥3   

  1. 1.长江水利委员会水文局 水文情报预测中心, 武汉 430010;
    2.长江水利委员会水文局 长江口水文水资源勘测局, 上海 200136;
    3.河海大学 水文水资源学院,南京 210098
  • 收稿日期:2017-03-01 出版日期:2018-08-01 发布日期:2018-08-14
  • 作者简介:张 涛(1986-),男,河北文安人,工程师,博士,主要从事流域水文模拟和水文预报调度研究。E-mail:zhangtao_hohai@163.com
  • 基金资助:
    国家重点研发计划项目(2017YFC1502501,2016YFC0402708)

Detectability of Hydrological Response to Land Use Change

ZHANG Tao1 , LIU Yu-ting2 , YANG Xin-yue3   

  1. 1. Forecast Center of Hydrology Information, Bureau of Hydrology of Changjiang Water Resources Commission, Wuhan 430010,China;
    2.Hydrology and Water Resources Survey Bureau of Yangtze River Estuary, Bureau of Hydrology of Changjiang Water Resources Commission, Shanghai 200136,China;
    3.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
  • Received:2017-03-01 Online:2018-08-01 Published:2018-08-14

摘要: 以涪江桥流域为研究区域,采用SWAT模型模拟流域水文过程,将相同水文气象条件下1985和1995年2个时期土地利用情景的SWAT模型模拟结果与土地利用空间转化图相结合,分析土地利用变化引起的水文要素变化及其可检测性问题。结果表明:1985—1995年间涪江桥流域发生较为剧烈的土地利用变化,但并未检测到足够显著的水文要素变化;不同土地利用类型水文效应的相似性、不同土地利用类型水文效应差异性以及统计中和效应和统计均化效应是导致土地利用变化引起的水文要素变化难以检测的主要原因。在此基础上,提出了水文动态响应度指标,来消除统计中和效应。该指标可以在一定程度上帮助研究者了解研究区特定水文要素变化的相对剧烈程度。研究结果可为土地利用总体规划和流域水资源保护与合理配置提供参考。

关键词: 土地利用变化, 水文响应, 可检测性, SWAT模型, 情景分析方法, 涪江桥流域

Abstract: The hydrological response to land use change and the detectability of such response are researched in thispaper by SWAT model. The hydrological processes in Fujiangqiao catchment under two land use scenarios (1985and 1995) are simulated, and diagrams of land use conversion are obtained for analysis. Identical climate drivers are used in both scenarios to eliminate the effect of climate difference. Results reveal that no apparent hydrological responses are detected in spite of dramatic land use changes in Fujiangqiao catchment from 1985 to 1995. The similarity of hydrological effect of different land use types, the variation of hydrological effect of different land use types, the statistical compensation effect, and the statistical average effect are main reasons of the difficulty in detecting the hydrological responses. In view of this, a hydrological dynamic response degree is proposed to eliminate the statistical compensation effect, which helps researchers understand the degree of hydrological responses.

Key words: land use change, hydrological response, detectability, SWAT model, scenario analysis, Fujiangqiao catchment

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