Ecological Characteristics of Dominant Species During Stabilization of Mobile Sand Dunes

ZHANG Ji-yi; ZHAO Ha-lin; ZHANG Tong-hui; ZHAO Xue-yong

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Ecological Characteristics of Dominant Species During Stabilization of Mobile Sand Dunes

- Ecological Characteristics of Dominant Species During Stabilization of Mobile Sand Dunes
- Bulletin of Soiland Water Conservation Vol. 23, Issue 5, Pages: 1-4(2004)
- 作者机构：
  
  1. 兰州理工大学,甘肃,兰州,730000
  2. 中国科学院寒区旱区环境与工程研究所,甘肃,兰州,730000
- 作者简介：
- 基金信息：
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- Published：2004
- 稿件说明：
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ZHANG Ji-yi, ZHAO Ha-lin, ZHANG Tong-hui, et al. Ecological Characteristics of Dominant Species During Stabilization of Mobile Sand Dunes[J]. Bulletin of Soiland Water Conservation, 2004, 23(5): 1-4.
DOI：

ZHANG Ji-yi, ZHAO Ha-lin, ZHANG Tong-hui, et al. Ecological Characteristics of Dominant Species During Stabilization of Mobile Sand Dunes[J]. Bulletin of Soiland Water Conservation, 2004, 23(5): 1-4. DOI：

摘要

流动沙地、半固定沙地、固定沙地是沙地固定过程几个明显的阶段

每一阶段发育着典型的群落类型

沙米(Agriophyllumsquarrosum)、差巴嘎蒿(Artemisiahalodendron)、隐子草(Cleistogenessquarrosa)分别是流动沙地、半固定沙地、固定沙地上群落的优势种。沙米种子圆而扁平的形态

种子萌发后胚根的快速伸长

是其适应流动沙地风沙环境的主要特征。沙埋促进生长

生长对水分条件的快速反应以及全季生长型特征是差巴嘎蒿在半固定沙地繁茂生长的主要原因。而隐子草则以增加根系生物量投入比例、须根系形态及其分布的浅表化来适应固定沙地的旱化土壤水分条件。

Abstract

There are three stages in the stabilization process of sand dunes

namely mobility

semi-fixed and fixed. Agriophyllum squarrosum

Artemisia halodendron and Cleistogenes squarrosa are the dominant species of communities on mobile sand dunes

semi-fixed sand dunes and fixed sand dunes

respectively. Main adaptive characteristics of Agriophyllum squarrosum include flat-shaped seeds and rapid growth of embryo roots after germination. The vigorous growth of Artemisia halodendron in semi-fixed sand dunes is promoted by positive growth reaction to sand burial promoting growth

rapid reaction to changed soil water conditions and perennial growth. Cleistogenes squarrosa is adapted to the arid conditions of stabilized sand dunes due to its (ability) to increasing root biomass.

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Related Institution

Xi’an Institute of Agriculture Science

Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling

Institute of Soil and Water Conservation, Northwest Sci-Tech University of Agriculture and Forestry, Yangling

Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University

Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China of Ministry of Education, Ningxia University

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