干旱区生态环境知识资源中心(Arid): 祁连山北坡5类天然草地地上部数量特征及其与环境因子的关系

Arid

	祁连山北坡5类天然草地地上部数量特征及其与环境因子的关系
其他题名	Aboveground Numerical Characteristics of Five Natural Grassland and Their Relationships to Environmental Factors in the Northern Slopes of the Mountains Qilian
	黄德青 1; 于兰 2; 张耀生 1; 赵新全 1
来源期刊	西北农业学报
ISSN	1004-1389
出版年	2011
卷号	20 期号:6 页码:174-180
中文摘要	利用祁连山北坡5类天然草地调查数据和同期的气象资料,分析其地上部数量特征及其与环境因子的关系。结果表明,5类草地的地上生物量、植被盖度均存在显著差异(P<0.05),表现为山地草甸>山地草甸草原>山地草原>高寒草原>山地荒漠草原;各草地群落地上生物量、高度和盖度的季节变化均呈单峰型,且峰值均出现在8月下旬;地上生物量与植被盖度显著相关(P<0.05),与群落高度(除山地草甸外)极显著相关(P<0.01),说明地上生物量随植被盖度和高度的增加而增大;各草地群落高度在达到最大值之前,均基本符合Logistic生长模型(P>0.01);地上生物量与同期水热因子的相关性均不显著(P>0.05),各草地群落高度和植被盖度对水热因子的敏感性存在差异。
英文摘要	We analyzed the aboveground numerical characteristics of natural grasslands and their relationships to environmental factors by means of the aboveground survey data of five natural grasslands and synchronous meteorological data in the northern slopes of the Qilian Mountain.The results indicated that the difference of the aboveground biomass and vegetation coverage among five kinds grasslands was significant(P<0.05).Sequence for the aboveground biomass and vegetation ranked as follows:mountainous meadow,mountainous meadow rangeland,mountainous pastureland,alpine pastureland,and mountainous desert rangeland;The seasonal dynamic of aboveground biomass,community height and vegetation coverage all appear to be single apex type and their values came to the peak in late August;The growth of the aboveground biomass was significantly correlated with the vegetation coverage(P<0.05),and more prominently with the community height(except for mountainous meadow)(P<0.01).It implied that the aboveground biomass significantly increased with the increase of the vegetation coverage and the community height;The growth of plant community height basically accorded with Logistic models before it reached to the maximum(P>0.01);(5)The aboveground biomass were not significantly correlated with synchronous climate factors(P>0.05).The sensitivities of vegetation coverage and community height to climate factors were different in five grassland types.
中文关键词	祁连山 ; 天然草地 ; 地上生物量 ; 群落高度 ; 植被盖度 ; 环境因子
英文关键词	Mountains Qilian Natural grassland Aboveground biomass Community height Vegetation coverage Environment factor
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:4240250
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/2XILL650/227227
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5类天然草地地上部数量特征及其与环境因子的关系[J]. 中国科学院西北生态环境资源研究院,2011,20(6):174-180.
APA	黄德青,于兰,张耀生,&赵新全.(2011).祁连山北坡5类天然草地地上部数量特征及其与环境因子的关系.西北农业学报,20(6),174-180.
MLA	黄德青,et al."祁连山北坡5类天然草地地上部数量特征及其与环境因子的关系".西北农业学报 20.6(2011):174-180.