荒漠草原带沙源及灌丛对灌丛沙堆形态的影响

谢国勋; 罗维成; 赵文智

doi:10.7522/j.issn.1000-694X.2014.00105

中国沙漠 >

2015 , Vol. 35 >Issue 3: 573 - 581

DOI: https://doi.org/10.7522/j.issn.1000-694X.2014.00105

沙漠与沙漠化

荒漠草原带沙源及灌丛对灌丛沙堆形态的影响

谢国勋 ,
罗维成 ,
赵文智

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1. 盐池县环境保护和林业局, 宁夏盐池 751500;
2. 中国科学院寒区旱区环境与工程研究所中国生态系统研究网络临泽内陆河流域研究站/中国科学院内陆河流域生态水文重点实验室, 甘肃兰州 730000;
3. 中国科学院大学, 北京 100049

谢国勋(1964-), 男, 宁夏盐池人, 高级工程师, 主要从事治沙研究。Email:LYJxieguoxun@l63.com

收稿日期: 2014-05-08

修回日期: 2014-06-13

网络出版日期: 2015-05-20

基金资助

国家重点基础研究发展计划项目(2013CB429903)

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Effect of Sand Source and Shrub Features on Nebkha Morphological Characteristics in Desert Steppe

Xie Guoxun ,
Luo Weicheng ,
Zhao Wenzhi

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1. Environment Protection and Forestry Bureau of Yanchi County, Yanchi 751100, Ningxia, China;
2. Linze Inland River Basin Research Station/Key Laboratory of Inland River Basin Ecohydrology, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
3. University of China Academy of Sciences, Beijing 100049, China

Received date: 2014-05-08

Revised date: 2014-06-13

Online published: 2015-05-20

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摘要

灌丛沙堆是干旱区一种典型的景观类型,经常出现在靠近流沙地带。在地处荒漠草原带的宁夏盐池北部的流沙边缘就发育有典型的白刺(Nitraria tangutorum)灌丛沙堆。本文对不同沙源距离和灌丛生长状况下的白刺灌丛沙堆形态特征进行了研究。结果表明:荒漠草原带白刺灌丛沙堆的高度0.2～4.8 m,90.05%的高度小于3.0 m;体积0.11～805.17 m³,6.08%的体积小于150 m³;面积0.86～333.3 m²,72.26%的小于50 m²。灌丛沙堆长轴长和短轴长、高度和面积、高度和体积、面积和体积间都存在很好的幂函数关系,随着灌丛沙堆高度的增加,其面积和体积也增加。沙源对白刺灌丛沙堆的分布特征有显著影响,灌丛沙堆的高度、面积和体积和沙源距离都有很好的抛物线形关系。白刺灌丛的生长状况对灌丛沙堆的形态特征也有明显的影响,即白刺灌丛生长状况越好,灌丛沙堆的高度、面积和体积也增大。

关键词： 白刺(Nitraria tangutorum); 灌丛沙堆; 形态特征; 沙源距离; 灌丛

本文引用格式

谢国勋 , 罗维成 , 赵文智 . 荒漠草原带沙源及灌丛对灌丛沙堆形态的影响[J]. 中国沙漠, 2015 , 35(3) : 573 -581 . DOI: 10.7522/j.issn.1000-694X.2014.00105

Abstract

Nebkha is a typical landscape in arid and semi-arid land, which commonly distributed in the quicksand regions. There are lots of Nitraria tangutorum nebkhas in the quicksand edge of north YanChi country under the desert steppes. This paper studied the effects of sand source and N. tangutorum growth condition on nebkhas morphology characteristics. The results are as follows: the height of N. tangutorum nebkhas in desert steppes were between 0.2-4.8 m, and about 90.05% of them were smaller than 3.0 m; the volume were between 0.11-805.17 m and only about 6.08% of them were bigger than 150 m³; the area were between 0.86-333.3 m², and about 72.26% of them were under 50 m². The relationships of long axis and short axis, height and area, height and volume, area and volume can well described with power functions. Area and volume of nebkhas were increased with the increase of nebkhas height. The distance of sand sources significantly affect the distribution characteristics of nebkhas. The growth conditions of N. tangutorum also affect the morphology characteristics of nebkhs, and the heights, areas, volumes of nebkhas were increased with the increase of coverage of N. tangutorum.

Key words： Nitraria tangutorum; nebkha morphology; sand source distance; shrub

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