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民勤绿洲生态需水与生态恢复对策

张凯1;韩永翔1;司建华2;韩海涛3   

  1. 1中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室, 兰州 730020; 2中国科学院寒区旱区环境与工程研究所, 兰州 730000; 3甘肃省气象局, 兰州 730020

  • 收稿日期:2006-01-21 修回日期:2006-04-11 出版日期:2006-07-10 发布日期:2006-07-10

Ecological water demand and ecological reconstruction in Minqin Oasis

ZHANG Kai1;HAN Yongxiang1; SI Jianhua2; HAN Haitao3   

  1. 1Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province, Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China; 2Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 3Gansu Provincial Meteorological Bureau, Lanzhou 730020, China

  • Received:2006-01-21 Revised:2006-04-11 Online:2006-07-10 Published:2006-07-10

摘要: 生态需水是当前水问题的一个研究热点,对于生态环境急剧恶化的内陆干旱区,这一研究尤为紧迫。以民勤绿洲作为研究区,采用阿维里扬诺夫估算方法,对其生态需水量进行了计算。结果表明,民勤绿洲现有植被最低生态需水量为1.4927×108 m3,而目前的生态用水量只有0.3525×108 m3,远没有达到维持极限抗性面积下的生态需水量。民勤绿洲生态用水的严重不足,主要是受到农田灌溉用水的严重挤占,从而加快了生态环境的日益恶化。通过分析,提出了生态恢复的对策与建议。

关键词: 水曲柳, 柳蝙蛾, 生物学, 发生规律

Abstract: Ecological water demand is one of the hotspots in water issues, especially in the arid areas whose eco-environmental condition is sharply deteriorated. By the method of Aweliyongrufe, this paper calculated the ecological water demand of Minqin Oasis. The results indicated that the minimum ecological water demand of existing vegetation in Minqin Oasis was 1.4927×108 m3·yr-1, while the current ecological water use was only 0.3525×108 m3·yr-1. Such a serious deficit of ecological water demand was mainly due to the water use for farmland irrigation, which accelerated the deterioration of ecological environment in Minqin Oasis. Based on the analysis, the strategies of ecological reconstruction in Minqin Oasis were put forward.

Key words: Fraxinus mandshurica, Phassus excrescens, Biology, Occurrence regularity