短命植物分布与沙垄表层土壤水分的关系——以古尔班通古特沙漠为例

应用生态学报 ›› 2004, Vol. ›› Issue (4): 556-560.

短命植物分布与沙垄表层土壤水分的关系——以古尔班通古特沙漠为例

王雪芹^1,2, 蒋进¹, 雷加强¹, 赵从举¹

1. 中国科学院新疆生态与地理研究所, 乌鲁木齐 830011;
2. 中国科学院寒区旱区环境与工程研究所, 兰州 730000

收稿日期:2002-12-23 修回日期:2003-03-23
通讯作者: 王雪芹,女,1964年生,助理研究员,在职博士生.主要从事风沙地貌、荒漠化及防治方面的研究,发表论文10余篇.E-mail:Oasis@ms.xjb.ac.cn
基金资助:
国家重点基础研究发展规划项目(G1999043504);中国科学院“西部之光”人才培养计划(20032057);中国科学院知识创新工程资助项目(KZCX3SW32604)

Relationship between ephemeral plants distribution and soil moisture on longitudinal dune surface in Gurbantonggut desert

WANG Xueqin^1,2, JIANG Jin¹, LEI Jiaqiang¹, ZHAO Congju ¹

1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2. Cold & Arid Regions Environment and Engineering Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2002-12-23 Revised:2003-03-23

摘要/Abstract

摘要： 于2002年3月至2002年8月,对古尔班通古特沙漠南部短命植物分布和沙垄表层30cm厚土壤水分间的关系进行了系统监测和研究.结果表明,早春表层土壤水分在个体沙丘表面的分异直接影响到短命植物的分布.4月下旬,垄间、两坡和垄顶土壤含水率依次为4.62%、3.98%和2.01%,相应的短命植物平均盖度于5月中上旬依次为51.8%、38.2%和4.4%.5月中旬后,短命植物的分布又改变了表层土壤水分分布,上述各地貌部位的土壤含水率依次为1.00%、1.90%和2.45%,形成垄顶最高、两坡次之、垄间最差的新的空间分布格局.

关键词: 短命植物, 分布, 土壤水分, 古尔班通古特沙

Abstract: Ephemeral plant is a particular group of desert flora only distributed in northern Xinjiang,China.In this study,field surveys of vegetation and soil moisture were conducted in the southern area of the Gurbantonggut desert from March to August 2002. The species number,coverage and growth of ephemerals and soil moisture were measured in 7 quadrats at different geomorphic positions on the longitudinal dune surface.The results showed that soil moisture in a depth of 0～30 cm affected ephemeral plants distribution significantly.In early spring,the soil moisture was 4.62% on the intredune,3.98% on the plinth,and 2.01% on the crest.Consequently,the average coverage of ephemeral plants reached 51.8%,38.2% and 4.4%,respectively.The existence of ephemeral plants distribution influenced soil moisture as well.In later May,there was an increase of surface soil moisture from the interdune to the crest.The soil moisture was 1.00% on the intredune,1.90% on the plinth,and 2.45% on the crest.

Key words: Ephemeral plants, Distribution, Soil moisture, Gurbantonggut desert

中图分类号:

Q945

王雪芹, 蒋进, 雷加强, 赵从举. 短命植物分布与沙垄表层土壤水分的关系——以古尔班通古特沙漠为例[J]. 应用生态学报, 2004, (4): 556-560.

WANG Xueqin, JIANG Jin, LEI Jiaqiang, ZHAO Congju . Relationship between ephemeral plants distribution and soil moisture on longitudinal dune surface in Gurbantonggut desert[J]. Chinese Journal of Applied Ecology, 2004, (4): 556-560.

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