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冰川冻土 ›› 2014, Vol. 36 ›› Issue (3): 724-731.doi: 10.7522/j.issn.1000-0240.2014.0087

• 寒旱区水文水资源 • 上一篇    下一篇

基于生态需水的石羊河北部平原生态保障技术研究

程玉菲, 王军德, 李元红, 金彦兆, 胡想全   

  1. 甘肃省水利科学研究院, 甘肃 兰州 730000
  • 收稿日期:2013-10-14 修回日期:2014-03-24 出版日期:2014-06-25 发布日期:2014-07-16
  • 作者简介:程玉菲(1980-),女,黑龙江克山人,工程师,2007年在兰州大学获硕士学位,现主要从事干旱区水文与水资源研究.E-mail:chengyf1980@gmail.com
  • 基金资助:
    水利部公益性项目(201001060);国际科技合作项目(2010DFA72840)资助

Study of the ecological security technology in the northern plains of the Shiyanghe River basin based on ecological water requirement

CHENG Yufei, WANG Junde, LI Yuanhong, JIN Yanzhao, HU Xiangquan   

  1. Gansu Research Institute for Water Conservancy, Lanzhou 730000, China
  • Received:2013-10-14 Revised:2014-03-24 Online:2014-06-25 Published:2014-07-16
  • Contact: 王军德,E-mail:jundwang@163.com E-mail:jundwang@163.com

摘要: 针对石羊河流域日益严峻的生态环境问题,选择干旱区生态需水计算为切入点,以变异理论为基础,利用Mann-Kendall非参数检验的方法确定石羊河北部平原区地下水位恢复的目标年,用生态功能区划方法划分生态功能区,利用达西定律、阿维里扬诺夫公式计算了地下水恢复及生态目标条件下的生态需水量,并提出了相应的生态保障措施. 结果表明:石羊河北部平原区划分为5个生态功能亚区及16个三级区,地下水位恢复的目标年份为1977年,地下水恢复到1977年的生态需水量为 55.95×108~74.10×108 m3,2015年和2020年生态目标条件下的生态需水分别为1.66×108 m3和1.80×108 m3. 考虑到地下水恢复的缓慢性和现实性,建议优先考虑设定目标条件下的植被正常生长生态需水,其次通过继续压缩人均耕地面积和灌溉定额的方式保证地下水恢复.

关键词: 变异理论, 石羊河, 北部平原区, 生态需水

Abstract: Aiming at the increasingly serious ecological environment in the Shiyanghe River basin, in this paper, the calculation of ecological water requirement based on the variation theory was taken as a key point. The target year of groundwater recovery was determined with Mann-kendall non-parameter test method, and the ecological function areas in the northern plains of the Shiyanghe River basin were divided. The ecological water requirement of target year was calculated by Dacy Law and Aviriyanover's Empirical Formula. Finally, the ecological security measures were correspondingly proposed. It is found that the northern plains of the Shiyanghe River basin should be divided into five ecological function subareas and 16 three-level areas through using of ecological function division method. 1977 is the target year for groundwater recovery; the amount of ecological water requirement is 55.95×108-74.10×108 m3 when the groundwater level returns to the level in 1977. The amount of ecological water requirement will be 1.66×108 m3 and 1.80×108 m3 per year, respectively, to the ecological goals in 2015 and 2020. Considering that the groundwater recovery will be slow and long-term, it is suggested to give priority to the ecological water requirement under the conditions of normal growth of vegetation, and compressing the areas of cultivated lands and irrigation quota to ensure the groundwater recovery.

Key words: variation theory, Shiyanghe River, northern plain, ecological water requirement

中图分类号: 

  • X171.1