干旱区生态环境知识资源中心(Arid): 塔河流域不同生境条件下柽柳种群结构异质性特征

Arid

	塔河流域不同生境条件下柽柳种群结构异质性特征
其他题名	Spatial Heterogeneity of Tamarix chinensis Population Structure in the Tarim River
	刘华 1; 董玲 1; 李丕军 2; 王文月 2; 贾瑞琪 2
来源期刊	东北林业大学学报
ISSN	1000-5382
出版年	2015
卷号	43 期号:7 页码:23-26,62
中文摘要	为明确荒漠生态系统优势灌木柽柳的种群结构及其形成机理,在塔河流域的沙地、盐生地、岩性土地等3种立地条件下开展柽柳种群调查,结果表明:3种立地条件下,优势柽柳灌丛中伴生有旱生灌木和草本植物,共计8科9属9种;3种立地条件下不同径级的柽柳种群个体数量随着径级的增大呈先增加后降低的变化趋势,且沙地环境条件下柽柳种群径级结构较盐生地和岩性土地的相对完整,但均以Ⅱ、III级个体的数量较多;随着高度级的增加,沙地柽柳种群不同树高级的个体数量变化趋势与其径级的变化一致,盐生地的呈下降趋势,岩性土地的呈上升趋势;沙地条件下,随着林地盖度的增加,柽柳种群中小径级个体数量明显增加,说明林地郁闭度的增加为柽柳个体的存活及生长提供了良好的生境条件;沙地的柽柳种群结构受土壤氮、镁、有机质质量分数和土壤含水量等多重因素的影响,而盐生地的主要受土壤有机质质量分数和土壤含水量的影响,岩性土地主要受土壤氮质量分数、有机质质量分数和土壤含水量等影响。
英文摘要	We studied the population characteristics of Tamarix chinensis in its three typical distribution areas of sandy land,saline land, and gobi desert along the Tarim River in south Xinjiang. The dominant species was T. chinensis mixed growing with some shrub and herbaceous plant belonging to 8 units, 9 genera and 9 species. The number of individual of different stem diameter of the T. chinensis population in three sites were increased at first and then reduced with the increase of stem diameter classes. More stems belonged to the Ⅱ-Ⅲ diameter classes. The diameter class pattern of the sandy land population was more close to normal distribution than those of the saline land and the gebi desert populations. The tree height class distribution of the population in the sandy land was similar to the stem class. With the tree height increase, tree percentage was decreased in the saline land,but increased in the gebi desert land. The Tamarix of little and middle diameter class increased with the coverage in the sandy land. The higher forest canopy density offered suitable environment factors to benefit for population growth and survive. The population structure in the sandy land was influenced by the contents of soil total N,soil Mg,soil organic matter, and soil moisture, influenced by soil organic content and soil moisture content in the saline land, and influenced by the contents of soil total N, soil organic matter, and soil moisture in the gobi desert.
中文关键词	柽柳 ; 种群结构 ; 空间异质性
英文关键词	Tamarix chinensis Population structure Spatial heterogeneity
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:5475319
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232573
作者单位	1.安徽农业大学, 合肥, 安徽 230036, 中国; 2.新疆林业科学院造林治沙研究所
推荐引用方式 GB/T 7714	刘华,董玲,李丕军,等. 塔河流域不同生境条件下柽柳种群结构异质性特征[J],2015,43(7):23-26,62.
APA	刘华,董玲,李丕军,王文月,&贾瑞琪.(2015).塔河流域不同生境条件下柽柳种群结构异质性特征.东北林业大学学报,43(7),23-26,62.
MLA	刘华,et al."塔河流域不同生境条件下柽柳种群结构异质性特征".东北林业大学学报 43.7(2015):23-26,62.