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中国农学通报 ›› 2016, Vol. 32 ›› Issue (1): 158-165.doi: 10.11924/j.issn.1000-6850.casb15070130

所属专题: 现代农业发展与乡村振兴

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

玛曲高寒草甸沙化研究进展──沙化发展及自然诱因

金红喜,何芳兰,李昌龙,韩生慧   

  1. 甘肃民勤荒漠草地生态系统国家野外科学观测研究站,甘肃民勤荒漠草地生态系统国家野外科学观测研究站,甘肃民勤荒漠草地生态系统国家野外科学观测研究站,甘肃民勤荒漠草地生态系统国家野外科学观测研究站
  • 收稿日期:2015-07-22 修回日期:2015-09-18 接受日期:2015-09-25 出版日期:2016-01-28 发布日期:2016-01-28
  • 通讯作者: 何芳兰
  • 基金资助:
    国家自然科学基金项目“沙化对黄河首曲高寒草甸植物多样性与生态系统功能的影响”,“石羊河下游衰败人工固沙林中红砂定居过程及其驱动机理研究”(31160111,31360203);甘肃省自然科学研究基金计划项目“戈壁土壤沃岛植物群落内种间关系对植物共存的作用及影响机制”(1308RJYA081)。

Research Process of Alpine Meadow Desertification in MaquResearch Process of Alpine Meadow Desertification in Maqu

  • Received:2015-07-22 Revised:2015-09-18 Accepted:2015-09-25 Online:2016-01-28 Published:2016-01-28

摘要: 地处青藏高原东南缘的黄河首曲是黄河全境最主要的产流区、水源涵养区和水源补给区,也是世界重要的生物多样性保护热点地区之一。但自20世纪60、70年代以来,该区地表径流减少、地下水位下降、植被破坏、草场严重退化及水土流失等生态环境问题日趋严重,尤其是草地沙化问题已相当突出,引起了国内外的广泛关注。通过搜集国内外文献,在总结分析的基础上,明确了历史时期玛曲高寒草甸的沙化情况,以及近几十年以来该区域的动态变化过程,探讨了自然因素对玛曲高寒草甸沙化的影响,以期为进一步展开深入研究玛曲高寒草甸沙化提供依据。

关键词: 柚, 柚, 克隆, CCoAOMT基因, 载体构建

Abstract: Maqu County lies in the southeast of Tibet Plateau, it is the main runoff producing area, water conservation area and water recharging area of the Yellow River and one of the important biodiversity protection areas in the world. However, since the 60s and 70s of the 20th century, the problems of overland runoff decrease, groundwater recession, vegetation deterioration, meadow degeneration and water and soil erosion increased seriously, especially the problem of meadow desertification. In this paper, the authors introduced the desertification condition in alpine meadow in Maqu, discussed the changing process of desertification and the effect of natural factors on desertification in order to provide the basis for further research.

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