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中国农学通报 ›› 2015, Vol. 31 ›› Issue (21): 177-183.doi: 10.11924/j.issn.1000-6850.casb15040162

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

青土湖水面形成对区域典型植被分布的影响

陈政融,刘世增   

  1. 甘肃农业大学林学院,甘肃省治沙研究所
  • 收稿日期:2015-04-21 修回日期:2015-06-30 接受日期:2015-05-08 出版日期:2015-07-28 发布日期:2015-07-28
  • 通讯作者: 刘世增
  • 基金资助:
    国家自然科学基金项目 “石羊河尾闾 (青土湖) 水面形成的生态效应研究” (31160116)。

Effect of Water Body Forming on the Distribution of Typical Vegetation in Qingtu Lake

  • Received:2015-04-21 Revised:2015-06-30 Accepted:2015-05-08 Online:2015-07-28 Published:2015-07-28

摘要: 腾格里沙漠与巴丹吉林沙漠在石羊河尾闾湖——青土湖区域逐渐形成合围之势,因此向青土湖输水和形成水面对促进区域植被恢复和环境整治具有重要意义。利用2010、2011、2013年不同年份的高分辨率遥感影像资料和研究区的调查资料,通过面向对象分类遥感分类方法对水面和植被类型面积进行了统计分析。结果表明:连年输水形成叠加效应,人工水面面积成倍增加,区域地下水位快速上升。随着水面的形成与变化,芦苇(Phragmitesaustralis)趋水分布,但连片分布格局滞后于水面形成,临接水域的白刺(Nitrariatangutorum)大面积消失。人工水面影响区域生态环境,导致区域典型植被面积随之变化。

关键词: 家蚕, 家蚕, 化学感受蛋白, 半定量RT-PCR, 蛋白纯化, 多克隆抗体

Abstract: Tengger Desert and Badain Jaran Desert are gradually forming encirclement situation at Qingtu Lake in Minqin. Therefore it is of significance to input water into Qingtu Lake and form water body for vegetation restoration and environmental remediation in the Shiyang River watershed. In this paper, based on relative hydrological data and high resolution remote sensing image data of 2010, 2011 and 2013, the author adopted object- oriented classification method and studied areas of water and vegetation in the region statistically. The results showed that the fold-increase of water area and the fast-raise of underground water level had been achieved with superimposed effect of water input. With the changing of water body, vegetation of Phragmites australis was formed by water surroundings, but a large area of reeds distribution fell behind the formation of water body, and the area of Nitraria tangutorum decreased around the water body. The study proves that the formation of artificial water body could influence regional ecological environment restoration which results in the change of regional plant community.