狭叶锦鸡儿（Caragana stenophylla）灌丛沙堆形态发育特征及固沙能力

doi:10.7522/j.issn.1000-694X.2013.00193

摘要/Abstract

摘要：

对内蒙古高原不同生境狭叶锦鸡儿(Caragana stenophylla)灌丛的灌丛形态参数、沙堆形态参数和沙堆体积进行了测定,目的是了解狭叶锦鸡儿在不同生境中的生长发育状况与固沙能力差异,探讨生物因素和环境因素对狭叶锦鸡儿灌丛沙堆形态、发育和固沙能力的影响。研究发现:狭叶锦鸡儿地上枝条鲜重、灌丛水平尺度、灌丛高度、沙堆直径、沙堆高度、沙堆坡角和沙堆体积均为:荒漠区＞荒漠草原区＞典型草原区;灌丛固沙效率为:荒漠草原区＞典型草原区＞荒漠区。3个生境中狭叶锦鸡儿灌丛和固定沙堆水平扩展均快于垂向发育。这些研究结果表明:不同生境狭叶锦鸡儿灌丛沙堆形态、体积和固沙能力的差异由两个因素决定,其一,不同环境孕育了不同形态和大小的灌丛,进而导致了灌丛沙堆形态、体积和固沙能力的不同;其二,不同环境沙源不同,导致了灌丛沙堆体积和固沙能力的不同,狭叶锦鸡儿灌丛沙堆发育与环境因素有关。

关键词: 狭叶锦鸡儿(Caragana stenophylla), 生境, 沙堆形态, 沙堆发育, 固沙能力

Abstract:

In this study, we compared the nabkhas morphology, development and sand-fixing capability for Caragana stenophylla in the different habitats of the Inner Mongolia Plateau. The results showed that the order of shrub aboveground biomass, shrub diameter and height, nabkhas diameter and height, nabkha slope angle, and nabkha volume in the different habitats were all as follows: typical desert>desert steppe>typical steppe; the order of shrub sand-fixing efficiency was as follows: desert steppe>typical steppe>typical desert. For shrub nabkha of C. stenophylla in the different habitats, the horizontal expansion was all faster than vertical expansion. Based on the results of this study, we can draw some main conclusions: There were two factors determining the difference of plant nabkha morphology, volume and sand-fixing capacity. Firstly, the environment diversity could give birth to the differences of shrub morphology and size, which caused nabkha differences; secondly, the differences of environment and sources of sand would bring out the diversity of the shrub nabkha volume and sand-fixing capacity. The shrub nabkha development of C. stenophylla was related to the environment factor.

Key words: Caragana stenophylla, habitat, nabkha morphology, nabkha development, sand-fixing capacity

中图分类号:

Q948.11

韩磊1, 张媛媛1, 马成仓1, 高玉葆1,2. 狭叶锦鸡儿（Caragana stenophylla）灌丛沙堆形态发育特征及固沙能力[J]. 中国沙漠, 2013, 33(5): 1305-1309.

HAN Lei1, ZHANG Yuan-yuan1, MA Cheng-cang1, GAO Yu-bao1,2. Nabkha Morphology, Development and Sand-fixing Capability of Caragana stenophylla in the Inner Mongolia Plateau[J]. JOURNAL OF DESERT RESEARCH, 2013, 33(5): 1305-1309.

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