干旱区生态环境知识资源中心(Arid): 祁连山北坡天然草地根冠比与气候因子的关系

Arid

	祁连山北坡天然草地根冠比与气候因子的关系
其他题名	Study on Root-shoot Ratios of Natural Grasslands and Their Relationships with Climatic Factors in the Northern Slopes of the Qilian Mountains
	黄德青 1; 于兰 2; 张耀生 1; 赵新全 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2011
卷号	28 期号:6 页码:1025-1030
中文摘要	利用祁连山北坡5类天然草地地上/地下生物量和同期的气象资料,分析5类草地的根冠比 (R/S)与气候因子的关系。结果表明:5类草地生物量为山地草甸>山地草原>山地草甸草原>高寒草原>山地荒漠草原,除高寒草原、山地草甸草原和山地草原的生物量之间无显著差异外,其余各类之间差异显著(P<0.05);高寒草原、山地草甸、山地草甸草原、山地草原和山地荒漠草原的R/S分别为9.3,8.7,5.1,7.0和7.1;5类草地R/S的季节变化均呈反抛物线型,但变化不尽相同;高寒草原的月R/S随上月土壤含水量的增加而显著降低,山地草甸草原和山地草原的月R/S随上月潜在蒸散量的增加也呈显著降低趋势,而山地草甸和山地荒漠草原的月R/S与前期的水热因子无显著相关关系。
英文摘要	In this paper, the relationships between the root-shoot ratios and meteorological factors were analyzed using the data of aboveground and underground biomasses of five types of natural grasslands and the synchronous meteorological data in northern slope of the Qilian Mountains. The results indicated that the biomass of five types of natural grasslands was in an order of mountain meadow > mountain steppe > mountain meadow steppe > alpine steppe > mountain-desert grasslands; difference of the biomass among the five types of natural grasslands was significantly except that among alpine steppe, mountain meadow steppe and mountain steppe (P<0.05); root-shoot ratios of alpine steppe, mountain meadow, mountain meadow steppe, mountain steppe and mountain-desert grasslands were 9.3, 8.7, 5.1, 7.0 and 7.1 respectively; there was a reverse-parabola-shaped seasonal variation in curves of root-shoot ratios of the five types of natural grasslands, but the seasonal variation of their root-shoot ratios was different; root-shoot ratio of alpine steppe was significantly decreased with the increase of soil moisture content in previous month, the root-shoot ratios of mountain meadow steppe and mountain steppe were significantly decreased with the increase of potential evapotranspiration in previous month, but there was no significant correlation between the root-shoot ratios of mountain meadow and mountain-desert grasslands and the hydrological and sunshine factors in previous month.
中文关键词	天然草地 ; 生态系统 ; 生物量 ; 根冠比 ; 气候因子 ; 祁连山
英文关键词	natural grassland biomass root-shoot ratio climatic factor the Qilian Mountains
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:4379209
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226547
作者单位	1.中国科学院西北高原生物研究所, 中国科学院高原生物适应与进化重点实验室, 西宁, 青海 810001, 中国; 2.桂林医学院基础医学院, 桂林, 广西 541004, 中国
推荐引用方式 GB/T 7714	黄德青,于兰,张耀生,等. 祁连山北坡天然草地根冠比与气候因子的关系[J]. 中国科学院西北生态环境资源研究院,2011,28(6):1025-1030.
APA	黄德青,于兰,张耀生,&赵新全.(2011).祁连山北坡天然草地根冠比与气候因子的关系.干旱区研究,28(6),1025-1030.
MLA	黄德青,et al."祁连山北坡天然草地根冠比与气候因子的关系".干旱区研究 28.6(2011):1025-1030.