地理科学 ›› 2012, Vol. 32 ›› Issue (4): 511-515.doi: 10.13249/j.cnki.sgs.2012.04.511

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塔里木河下游土壤风蚀期0~15 cm层土壤含水率分布规律

李诚志1,2(), 刘志辉2,3,4,,A;*   

  1. 1.新疆大学资源与环境科学学院, 新疆 乌鲁木齐 830046
    2.新疆大学教育部绿洲生态重点实验室, 新疆 乌鲁木齐 830046
    3.新疆大学干旱生态环境研究所, 新疆 乌鲁木齐 830046
    4.干旱半干旱区可持续发展国际研究中心, 新疆 乌鲁木齐 830046
  • 收稿日期:2011-11-21 修回日期:2012-01-12 出版日期:2012-04-20 发布日期:2012-04-20
  • 通讯作者: 刘志辉 E-mail:xdlichengzhi@sina.com
  • 作者简介:

    作者简介:李诚志:(1979-),男,湖南资兴人,博士研究生,主要研究方向为干旱区人地关系。E-mail:xdlichengzhi@sina.com

  • 基金资助:
    高等学校科技创新工程重大项目培育资金项目(708090)、国家自然基金项目(40871023)、国家社会科学基金项目(11CGL113)、新疆大学博士启动基金(07020428040)资助

Distribution of the Soil Moisture (0-15 cm) During the Soil Drifting in the Lower Reach of Tarim River

Cheng-zhi LI1,2(), Zhi-hui LIU2,3,4   

  1. 1.School of Resources and Environment Science,Xinjiang University,Urumqi, Xinjiang 830046,China
    2.Key Laboratory of Oasis Ecology of Ministry of Education,Xinjiang University,Urumqi, Xinjiang 830046,China
    3. Institute of Arid Ecology and Environment,Xinjiang University,Urumqi , Xinjiang 830046,China
    4. International Center for Desert Affairs-Research on Sustainable Development in Arid and Semi-arid Lands, Urumqi , Xinjiang 830046,China
  • Received:2011-11-21 Revised:2012-01-12 Online:2012-04-20 Published:2012-04-20

摘要:

土壤表层含水率是影响土壤风蚀的一个重要参数。在塔里木河下游土壤风蚀期间对0~15 cm层土壤水分进行调查,发现0~15 cm层土壤含水率极低,平均含水率仅0.84%,含水率>2%的区域主要分布在绿洲边缘和河道边缘。进一步探讨植被盖度、风沙活动强度和土壤结皮对0~15 cm层土壤含水率分布的影响,结果表明:① 0~15 cm层土壤含水率与植被盖度的相关性不显著;② 0~15 cm层土壤含水率与风沙活动强度呈显著指数负相关;③ 土壤结皮能够有效保护表层土壤水分,抑制土壤风蚀。

关键词: 土壤含水率, 土壤风蚀, 植被盖度, 风沙活动强度, 土壤结皮, 塔里木河下游

Abstract:

Surface soil moisture is one of the most important parameters influencing soil drifting. The moisture in 0-15 cm soil is investigated during the soil drifting in the lower reach of Tarim River. It was found that the soil moisture (0-15 cm) is very low, the average of the soil water content is only 0.84%, and the regions of the soil moisture more than 2% are concentrated in the edge of oasis and river. The relationships between the soil moisture and the vegetation coverage, the intensity of soil drifting, and the soil crust were analyzed. It shows that the correlation between the soil moisture (0-15 cm) and the vegetation coverage is not evident. The correlation between the soil moisture content and the intensity of soil drifting is significant exponential negative correlation. The soil crust can protect the surface soil moisture availably, and can restrain the soil drifting.

Key words: soil moisture, soil drifting, vegetation coverage, intensity of soil drifting, soil crust, the lower reach of Tarim River