干旱区生态环境知识资源中心(Arid): 生物结皮对荒漠草本植物群落结构的影响

Arid

	生物结皮对荒漠草本植物群落结构的影响
其他题名	Effect of Soil Microbiotic Crust on Plant Community in the Gurbantunggut Desert
	庄伟伟 1; 张元明2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2017
卷号	34 期号:6 页码:1338-1344
中文摘要	通过人工去除生物结皮试验,分析古尔班通古特沙漠生物结皮对常见荒漠草本植物群落结构的影响。根据人为去除生物结皮的试验结果,结合生物结皮对种子萌发、幼苗存活以及土壤养分和水分等影响,综合分析生物结皮对草本植物多样性的影响。结果表明:尖喙牻牛儿苗(Erodium oxyrrhynchum)、条叶庭荠(Alyssum linifolium)、琉苞菊(Hyalea pulchella)、荒漠庭荠(Alyssum desertorum)及旱麦草(Eremopyrum triticeum)的生物量总和占总生物量的90%以上,是该沙漠的优势草本植物。去除生物结皮后,草本植物的植被高度、物种丰富度和多样性指数都显著提高;但是,植被盖度、密度和群落生物量却显著降低。说明生物结皮的存在改变了古尔班通古特沙漠南缘荒漠草本植物的群落结构,植被盖度和群落生物量提高,这对于防风固沙、稳定沙面具有重要的生态意义。
英文摘要	The plant communities in the microbiotic crust-intact and microbiotic crust-removed plots in the Gurbantonggut Desert were investigated. The desert is mosaics-patched by vascular plants and soil microbiotic crust. The influence of soil microbiotic crust on seed germination, seedling survival, soil nutrient content and water distribution was firstly discussed,and then the influence of soil microbiotic crust on plant diversity was studied. The results showed that the sum of the biomass of five dominant herb species including Erodium oxyrrhynchum,Alyssum linifolium,Hyalea pulchella,Alyssum desertorum and Eremopyrum triticeum contributed more than 90% of the total aboveground biomass of the synusia. Compared with the microbiotic crust-intact plot, the plant height,Shannon Wiener diversity index (H) and species richness (R) were significantly increased after the microbiotic crust was removed. However, the plant density,productivity and coverage were lower than those in microbiotic crust-intact plot. These results indicated that the diversity and coverage of herbaceous plants were significantly affected by microbiotic crust. It is concluded that microbiotic crust could promote the restoration of desert ecosystem.
中文关键词	生物结皮 ; 草本植物 ; 植物多样性 ; 群落结构 ; 生物量 ; 古尔班通古特沙漠
英文关键词	microbiotic crust herbaceous plant plant diversity community structure biomass the 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:6119905
来源机构	中国科学院新疆生态与地理研究所 ; 新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236027
作者单位	1.新疆师范大学生命科学学院,干旱区植物逆境生物学实验室, 新疆特殊环境物种保护与调控生物学实验室, 乌鲁木齐, 新疆 830054, 中国; 2.中国科学院新疆生态与地理研究所, 中国科学院干旱区生物地理与生物资源重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	庄伟伟,张元明. 生物结皮对荒漠草本植物群落结构的影响[J]. 中国科学院新疆生态与地理研究所, 新疆师范大学,2017,34(6):1338-1344.
APA	庄伟伟,&张元明.(2017).生物结皮对荒漠草本植物群落结构的影响.干旱区研究,34(6),1338-1344.
MLA	庄伟伟,et al."生物结皮对荒漠草本植物群落结构的影响".干旱区研究 34.6(2017):1338-1344.