干旱区生态环境知识资源中心(Arid): 古尔班通古特沙漠短命植物分布及其沙面稳定意义

Arid

	古尔班通古特沙漠短命植物分布及其沙面稳定意义
其他题名	The Distribution of Ephemeral Vegetation on the Longitudinal Dune Surface and Its Stabilization Significance in the Gurbantunggut Desert
	王雪芹 1; 蒋进 1; 雷加强1 ; 张伟民 2; 钱亦兵 1
来源期刊	地理学报
ISSN	0375-5444
出版年	2003
卷号	58 期号:4 页码:598-605
中文摘要	从植被稳定沙面的角度出发，通过2002年对古尔班通古特沙漠南部沙垄表面植物种类、高度和盖度等的系统监测，阐明短命植物在单个沙丘上的时空分布规律。并对气象资料和人类活动扰动沙面后短命植物的自然侵入等进行综合分析，探讨沙面稳定中短命植物的重要作用。研究区总计有45种植物，其中短命植物29种。4月初短命植物萌动出土，在两个月左右的时问完成整个生长发育过程。4、5、6三个月正是北疆沙漠风沙活动强盛期，大部分沙垄表面乔灌木和长营养期草本植物盖度不足10％，而短命植物盖度则分别达到13．9％、40．2％和14．1％，是古尔班通古特沙漠植被稳定沙面的主要贡献者。对工程行为扰动沙面后的植物恢复调查显示，短命植物是首先入侵的先锋植物。
英文摘要	Field surveys of vegetation were conducted in the southern area of the Gurbantunggut Desert from March to August 2002. Vegetation cover was measured using 6 quadrats at different geomorphic positions on the longitudinal dune. Species numbers, coverage and growth of plants were recorded. Distributions of ephemerals on the dune surface were obtained, and the stabilization significance of the distribution ephemerals on the longitudinal dune surface in Gurbantunggut Desert was discussed. Threshold wind data from the Cainan meteorological station covering 1994 to 1995 were also analysed. A total of 45 species were recorded at the study site, of which 29 species were ephemerals. They formed special spring synusiae communities, of which Alyssum linifolium and Erodium oxyrrhynehum were the dominant species. At the peak of the ephemeral growth cycle most of the above-mentioned ground biomass was measured between surface level and a height of 30 cm, and root density was the greatest, ranging between 0 and 30 cm. The temporal and spatial distributions of ephemerals are unique. Their germination period is from late March to early April. Most of the ephemerals end their life-cycle according to climatic conditions. This usually occurs sometime between the last 10 days of June and the first 10 days of July. The average coverage of ephemerals on the interdune corridor and the two plinths reached 13.9% in March, 40.2% in April and 14.1% in June. Ephemeral coverage also varied in different zones of the dune. Spring coverage was 40.2% on the interdune, 44.9% on the plinth and 4.4% on the crest.
中文关键词	短命植物 ; 时空分布 ; 沙面稳定意义 ; 古尔班通古特沙漠
英文关键词	ephemerals temporo-spatial distribution longitudinal dune stabilization significance Gurbantunggut Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:1312952
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203905
作者单位	1.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 2.中国科学院寒旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	王雪芹,蒋进,雷加强,等. 古尔班通古特沙漠短命植物分布及其沙面稳定意义[J]. 中国科学院新疆生态与地理研究所,2003,58(4):598-605.
APA	王雪芹,蒋进,雷加强,张伟民,&钱亦兵.(2003).古尔班通古特沙漠短命植物分布及其沙面稳定意义.地理学报,58(4),598-605.
MLA	王雪芹,et al."古尔班通古特沙漠短命植物分布及其沙面稳定意义".地理学报 58.4(2003):598-605.