自然资源学报

自然资源学报 ›› 2010, Vol. 25 ›› Issue (12): 2030-2039.doi: 10.11849/zrzyxb.2010.12.004

• 资源利用与管理 • 上一篇    下一篇

毛乌素沙地气候变化及其对植被覆盖的影响

王立新1a,2, 刘华民1b, 杨劼1b,2, 梁存柱1b,2, 王炜1b, 张继恩1b   

  1. 1. 内蒙古大学 a.环境与资源学院, b.生命科学学院, 呼和浩特 010021;
    2. 中美生态、 能源及可持续性科学内蒙古研究中心, 呼和浩特 010021
  • 收稿日期:2010-01-05 修回日期:2010-05-16 出版日期:2010-12-20 发布日期:2010-12-20
  • 作者简介:王立新(1975- ),男,内蒙古赤峰人,副教授,硕士,主要从事草地和湿地生态学的研究。
  • 基金资助:

    国家自然科学基金地区科学基金项目(40861002,31060076);内蒙古自然科学基金(20080404MS0609)。

Climatic Change of Mu Us Sandy Land and Its Influence on Vegetation Coverage

WANG Li-xin1a,2, LIU Hua-min1b, YANG Jie1b,2, LIANG Cun-zhu1b,2, WANG Wei1b, ZHANG Ji-en1b   

  1. 1. a. College of Environment and Resources, b. College of Life Sciences, Inner Mongolia University, Hohhot 010021, China;
    2. Sino-US Center for Conservation, Energy and Sustainability Science in Inner Mongolia, Hohhot 010021, China
  • Received:2010-01-05 Revised:2010-05-16 Online:2010-12-20 Published:2010-12-20

PDF (PC)

赞

被引次数

69 | 12

摘要： 利用1961—2007年毛乌素沙地气温、降水资料,对研究区近50 a来气温和水分资源各分量的时空变化进行了研究,并结合TM影像和中巴资源卫星影像,从气候变化和群落水分收支平衡的角度,对毛乌素沙地近20 a的植被覆盖变化及其原因进行了分析。结果表明:近50 a,沙地增温趋势显著,变化率为0.33 ℃/10 a。全区域年均温变化趋势的范围为0.16~0.5 ℃/10 a,且增温的程度存在西北部最强、东南部最弱的趋势。水分资源各分量时空分布极不均匀:东南部降水量P和可利用降水Δw多、陆面蒸散E强,西北部相反。P、E、Δw均呈现出逐年减少的趋势,并且大致经历了3个变化阶段。近20 a毛乌素沙地植被覆盖变化与气候变化密切相关。为适应不断变化的气候需要,在进行沙地治理与生态建设中,必须考虑人工植被建设的可持续性问题。

关键词: 毛乌素沙地, 气候变化, 水分收支平衡, 植被覆盖

Abstract: Temperature and each component of water resources in Mu Us Sandy Land were analyzed based on the precipitation and temperature data from 1961 to 2007. Combining of TM images and CBERS images, from climate change and community water balance point of view, the change of vegetation cover and its cause in Mu Us Sandy Land for nearly 20 years are analyzed. The results show that: Over the past 50 years, the trend of warming in Sandy Land is significantly changing with the rate of 0.33 ℃/10 a. The regional variation range of mean annual temperature is 0.16-0.50 ℃/10 a. The warming degree in southeast is stronger than that of in northwest. The various components of water resource in spatial and temporal distribution are uneven: P and Δw are more and E is strong in northwest while which are opposite in southeast. A decreasing trend of P,E and Δw has emerged which roughly experienced three changing stages. For nearly 20 years the changes of vegetation cover and climate in Mu Us Sandy Land are closely linked. In order to adapt to the climate change the construction of artificial vegetation must take into account the issue of sustainability.

Key words: Mu Us Sandy Land, climatic change, water balance, vegetation coverage

中图分类号: 

  • P467