干旱区生态环境知识资源中心(Arid): 半干旱区环境因子对柠条灌木林结构的影响

Arid

	半干旱区环境因子对柠条灌木林结构的影响
其他题名	Influence of Environmental Factors on Formation of Morphological Structure of Caragana Korshiskii. In Semi-arid Region
	赵艳云 1; 程积民 1; 王延平 2; 万惠娥 1; 胡相明 1
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2005
卷号	25 期号:3 页码:10-14
中文摘要	以半干旱区宁夏固原17a生柠条灌木林为研究对象,分析了不同地形、整地方式及降雨量对柠条生长形态的影响,并对影响柠条单株形态组成的指标进行了主成分分析.研究结果表明:(1)不同坡位对柠条的株高、根深、生物量影响显著,而对柠条的分枝数没有明显影响;不同整地方式对柠条的株高、分枝、根深及单株生物量均影响显著.(2)降雨量对柠条形态组成影响深刻,柠条的株高、分枝、单株生物量与年度累积降雨量之间呈"S"型曲线,说明柠条形态建成与降雨量有极大的相关性;根系的生长与降雨量之间则呈指数规律增长.(3)柠条各生长指标间存在着紧密的联系.株高、分枝、株生物量是描述柠条地上部形态结构特征的指标组合;根深则是描述柠条地下形态结构的指标.
英文摘要	Using the Caragana korshiskii. shrubbery of 17 years in Shanghuang as the studied object, this article analyzed the effect of different topography, site preparation modes and annual accumulated rainfall to the formation of morphological structure of the Caragana korshiskii. shrubbery. The height, the root depth, the number of branches and the biomass of Caragana korshiskii. shrubbery in different topography and preparation modes were studied. By using the principal component analysis, the results suggested: (1) The effect of different topography was significant to the tree height, root depth and biomass, but the number of branches was not. The effect of dif-ferent site preparation was also significant to all biologic indices. (2) The effect of annual accumulated rainfall on the formation of morphological structure of Caragana korshiskii. shrubbery was high. By analyzing the regression about tree height, root depth, number of branches and biomass of Caragana korshiskii. with total precipitation, the curve of tree height , the number of branches and biomass were showed as "S" pattern, which suggested the correlation between the annual accumulated rainfall and the indices were very large. The relationship between root depth and the annual accumulated rainfall was the shape of exponential curve. (3) All growth indices have close re-lation. Tree height, branches and biomass were aboveground combined indices to the descriptive of plant and the root depth was the under-ground one.
中文关键词	柠条 ; 年降雨量 ; 形态结构 ; 坡位 ; 整地方式
英文关键词	Caragana korshiskii. annual accumulated rainfall morphological structure topography prepara-tion modes
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:1965833
来源机构	中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206622
作者单位	1.中国科学院水利部,水土保持研究所, 杨凌, 陕西 712100, 中国; 2.山东农业大学, 泰安, 山东 271000, 中国
推荐引用方式 GB/T 7714	赵艳云,程积民,王延平,等. 半干旱区环境因子对柠条灌木林结构的影响[J]. 中国科学院水利部水土保持研究所,2005,25(3):10-14.
APA	赵艳云,程积民,王延平,万惠娥,&胡相明.(2005).半干旱区环境因子对柠条灌木林结构的影响.水土保持通报,25(3),10-14.
MLA	赵艳云,et al."半干旱区环境因子对柠条灌木林结构的影响".水土保持通报 25.3(2005):10-14.