干旱区生态环境知识资源中心(Arid): 高寒山地甘肃臭草斑块特征与土壤水分的关系

Arid

	高寒山地甘肃臭草斑块特征与土壤水分的关系
其他题名	Relationship Between Soil Moisture and Patch Characteristics of Melica przewalskyii Communities in a Degraded Alpine Grassland in Gansu, China
	高福元; 赵成章; 卓玛兰草
来源期刊	应用与环境生物学报
ISSN	1006-687X
出版年	2012
卷号	18 期号:4 页码:571-574
中文摘要	选取石羊河上游高寒退化草地甘肃臭草种群,分析斑块特征、土壤水分以及二者之间的相互关系,以期了解植被对土壤水分变化的适应性和反作用特征.结果表明:甘肃臭草斑块在形成、扩散和稳定阶段种群高度、密度、盖度由中心向边缘逐渐减小,衰退阶段由中心向边缘逐渐增大,甘肃臭草斑块内土壤水分由中心向边缘逐渐增大,斑块内土壤水分大于斑块外;斑块内土壤水分与植被主要生物学特征之间由负相关向正相关过渡.甘肃臭草具有明显的可塑性,通过对干旱区环境的长期适应,改变了小范围内土壤水分分布结构,进而形成繁茂生长的单一优势种群斑块.表3参16
英文摘要	Vegetation usually adapts to and also affects the soil moisture of the stand where it lives.In the upstream area of Shiyang River,Gansu Province,China,alpine degraded grasslands are dominated by Melica przewalskyii.The vegetation patch characteristics,soil moistures and their relationships were studied.The results showed that: The height,density and cover of the species were decreased from center of the patches to the edges at formation,diffusion and stable periods of the community succession.But at recession period,the trend was reversed,with higher soil moisture in center and within the vegetation patches.Along the vegetation succession,the relationship between soil moisture and the vegetation parameters changed from negatively correlated to positively correlated.It was suggested that M.przewalskyii was highly adaptive as it could modify the fine-scale soil moisture distribution pattern to create a favorable condition for its population establishment and development in arid environment.Tab 3,Ref 16
中文关键词	甘肃臭草 ; 土壤水分 ; 斑块 ; Pearson相关性 ; 石羊河上游 ; 高寒退化山地
英文关键词	Melica przewalskyi soil moisture patch Pearson correlation Upper Shiyang River degraded alpine grassland
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES ; AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Plant Sciences ; Agriculture
CSCD记录号	CSCD:4622488
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228841
作者单位	西北师范大学地理与环境科学学院, 甘肃省湿地资源保护与产业发展工程研究中心, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	高福元,赵成章,卓玛兰草. 高寒山地甘肃臭草斑块特征与土壤水分的关系[J]. 西北师范大学,2012,18(4):571-574.
APA	高福元,赵成章,&卓玛兰草.(2012).高寒山地甘肃臭草斑块特征与土壤水分的关系.应用与环境生物学报,18(4),571-574.
MLA	高福元,et al."高寒山地甘肃臭草斑块特征与土壤水分的关系".应用与环境生物学报 18.4(2012):571-574.