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冰川冻土 ›› 2016, Vol. 38 ›› Issue (6): 1658-1665.doi: 10.7522/j.issn.1000-0240.2016.0193

• 寒旱区水文与水资源 • 上一篇    下一篇

大通河流域土地利用/覆被变化的水文响应

刘赛艳1,2, 黄强1,2, 王义民1,2, 黎云云1,2, 李向阳3   

  1. 1. 西安理工大学 陕西 西安 710048;
    2.西北旱区生态水利工程国家重点实验室培育基地 陕西 西安 710048;
    3. 中国电建集团西北勘测设计研究院有限公司, 陕西 西安 710065
  • 收稿日期:2016-07-19 修回日期:2016-11-10 出版日期:2016-12-25 发布日期:2017-04-06
  • 通讯作者: 黄强,E-mail:sy-sj@.xaut.edu.cn E-mail:sy-sj@.xaut.edu.cn
  • 作者简介:刘赛艳(1990-),女,江西抚州人,2016年在西安理工大学获硕士学位,现为西安理工大学在读博士研究生,主要从事水文学及水资源研究.E-mail:719685861@qq.com
  • 基金资助:

    国家自然科学基金项目(91325201;51190093;51309188);陕西省重点科技创新团队(2012KCT-10);高等学校博士学科点专项科研基金(20116118110009);陕西省教育厅重点实验室项目(13JS069)资助

Hydrological response to land-use/cover change in the Datong River

LIU Saiyan1,2, HUANG Qiang1,2, WANG Yimin1,2, LI Yunyun1,2, LI Xiangyang3   

  1. 1. Xi'an University of Technology, Xi'an 710048, China;
    2. State Key Laboratory Base of Eco-hydraulic in Arid Area, Xi'an 710048, China;
    3. Northwest Engineering Corporation Limited, Xi'an 710065, China
  • Received:2016-07-19 Revised:2016-11-10 Online:2016-12-25 Published:2017-04-06

摘要:

以大通河流域为研究区域,利用1985年和2005年土地利用数据,结合SWAT分布式水文模型定量评估了流域土地利用/覆被变化的水文效应。结果表明:1985-2005年大通河流域的土地利用变化主要表现为草地向耕地、居工地转变,草地所占比例由46.7%骤降至20.9%,而耕地面积由1985年的1065.8km2增加到2005年的3243km2;相较于1985年的土地利用情景,2005年土地利用情景下的模拟的多年平均径流增加了1.92×108m3,由于上中下游主要的土地利用/覆被变化不同,导致流域径流变化增加程度由西北至东南逐渐增大;大通河流域年径流的增加主要表现为汛期径流增加,讯期月平均径流增幅达到了0.40×108m3·mon-1;非汛期径流则呈不明显减小趋势,平均降幅为0.024×108m3·mon-1。合理规划大通河流域土地利用方式,提高水源区涵养能力,对流域水资源可持续发展具有重要意义。

关键词: 大通河流域, 土地利用变化, 水文响应, SWAT模型

Abstract:

Taking Datong River basin as a study area, using SWAT model, the hydrological effects in the basin was quantitatively analyzed based on the land-use/cover change scenarios in 1985 and in 2005. The results showed that: (1) during 1985-2005, the most evident change of land-use was grassland shifting to farmland and construction sites. As a result, the grassland proportion greatly reduced, from 46.7% to 20.9%, and the cultivated land area from 1 065.8 km in 1985 increased to 3 243 km in 2005; (2) compared with the land-use situation in 1985, the simulated multi-year average runoff of 2005 increased 1.92×108 m, with the increasing gradually from northwest to southeast due to the different in main land-use among the upstream, midstream and downstream; (3) annual runoff increase was mainly in the flood season, with a rate of 0.40×108 m·mon-1, while in non-flood-season runoff decreased with a rate of 0.024×108 m·mon-1. Therefore, it is of great importance to make reasonable land-use plan and to improve the ability to conserve water resources for sustainable development in the basin.

Key words: Datong River basin, land-use/cover change, hydrological response, SWAT model

中图分类号: 

  • F301.24