地理研究

地理研究 ›› 2002, Vol. 21 ›› Issue (4): 449-458.doi: 10.11821/yj2002040007

• 论文 • 上一篇    下一篇

石羊河下游民勤绿洲变化的人文机制研究

杨永春1, 李吉均1, 陈发虎1, Jacquie Burgess2, 李瑞成3, 李丁1, 常跟应1, 李忆春1   

  1. 1. 兰州大学资源环境学院地理科学系 甘肃兰州730000;
    2. Department of Geography;
    3. 民勤县水管局,甘肃兰州730000
  • 收稿日期:2002-01-14 修回日期:2002-03-25 出版日期:2002-08-15 发布日期:2002-08-15
  • 作者简介:杨永春(1969-)男,陕西白水人,副教授,博士。主要从事区域可持续发展,城市地理方面的研究。
  • 基金资助:

    国家自然科学基金重点项目(49731010);兰州大学资源环境学院地理科学系与英国伦敦大学学院合作项目(BC项目)。

The human mechanism research of Minqin Oasis change in the lower reaches of the Shiyang River

YANGYong-chun1, LIJi-jun1, CHENFa-hu1, Jacquie Burgess2, LI Rui-cheng3, LIDing1, CHANGGen-ying1, LI Yi-chun1   

  1. 1. The Department of Resources and Environment Institute, Lanzhou University, Lanzhou 11 The
    1. Department of Resources and Environment Institute,Lanzhou University,Lanzhou 730000,China;
    2. Department of Geography,University College London,U K;
    3. Water Management Bureau of Minqin,Wuwei 733000,China
  • Received:2002-01-14 Revised:2002-03-25 Online:2002-08-15 Published:2002-08-15

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被引次数

200 | 24

摘要：

本文根据社会调查资料分析了甘肃省河西地区石羊河下游民勤绿洲变化的趋势及其影响 ,进而从用水行为和水量均衡角度讨论了绿洲变化的人文作用机制 ,认为石羊河流域下游绿洲变化与传统农业外延式扩张机制密切相关 ,而传统农业扩张机制由于各种因素的制约在短时期内难以打破。而不打破导致绿洲环境恶化的人文机制 ,任何试图扭转此类地区绿洲环境恶化趋势的措施都可能是无效的。

关键词: 民勤盆地, 绿洲变化, 人文机制, 石羊河下游

Abstract:

Based on social investigation material this paper analyses oasischange and its impact on Minqin Basin at the lower reaches of the Shiyang River in Hexi Corridor of western China.Furthermore,it discusses human mechanism caused oasischange in the context of human behaviorof water use and quantity balance of water use.Minqin oasischange is closely related to the expanding mechanism of traditional agriculture which can not be easily broken in a limited period of time.Howerver,if the human mechanism leading to environmental deterioration continues to exist, all human actions attempting to turn back the trend of the oasischange in the same area will have little effect. The worse trend of Minqin Oasisin the lower reaches of the Shiyang River is the process of the rapid decline of underground waterlevel, desertification, salinizification-alkalization and degeneration of vegetative cover that have greatly affected the agricultural production since the 1950s. The human factor causedthe oasischange is chiefly due to theunlimited demand of agricultural water use incited by the enlargement of farmland resulting from rapid population increase of the Shiyang drainage basin. The decrease of upstream runoff and the increase of water requirements have explained the decline of underground water level and the worsening of the underground water quality that caused the rapid salinizification and the rapid decline of the crop production,constituting one of the main reasons for farmland enlargement. All of these factors mentioned above are attributed to the degenerated vegetative cover and the disasterof the ecosystem.

Key words: Minqin Basis, oasischange, human mechanism, lower reaches of Shiyang River