干旱区生态环境知识资源中心(Arid): 乌兰布和沙漠东南缘白沙蒿(Artemisia sphaerocphala)灌丛沙堆形态特征与固沙能力

Arid

	乌兰布和沙漠东南缘白沙蒿(Artemisia sphaerocphala)灌丛沙堆形态特征与固沙能力
其他题名	Nabkha Morphological Characteristics and Sand Fixing Capacity of Artemisia sphaerocphalain the Southeastern Edge of the Ulan Buh Desert
	高永1 ; 党晓宏 1; 虞毅 2; 汪季 1; 王珊 1; 原伟杰 2; 张惜伟 1
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2015
卷号	35 期号:1 页码:1-7
中文摘要	白沙蒿(Artemisia sphaerocphala)灌丛沙堆是乌兰布和沙漠最为广泛分布的典型荒漠灌丛沙堆之一。本研究对白沙蒿灌丛的灌丛形态参数、沙堆形态参数进行了野外测定,探讨沙堆形态发育及固沙能力与白沙蒿灌丛形态的关系。结果表明:白沙蒿灌丛高度随着灌丛半径的增加而呈对数曲线增加,在灌丛较小时灌丛高度增长较快,随后渐趋于稳定,其水平方向发育速度大于垂直方向;白沙蒿灌丛沙堆半径及高度随灌丛半径和高度增加而增加,二者呈显著线性关系,沙堆水平方向发育受到灌丛冠幅的影响,沙堆垂直方向的发育水平取决于灌丛高度;随白沙蒿地上部分鲜重的增加,灌丛沙堆底面积、高度、沙堆体积和固沙效率均呈极显著线性增加(p<0.01);白沙蒿灌丛越大其固积沙堆也越大,固沙率越高,不同大小灌丛白沙蒿间的固沙效率差异显著(p<0.05);白沙蒿灌丛背风侧的积沙宽度(y)与积沙距离(x)显著相关(R~2=0.9917),其线性回归方程为y=-19.654x+122.41,在距离灌丛背风面6~7倍高度的地方,积沙接近消失。
英文摘要	Artemisia sphaerocphala nabkha is a kind of typical desert nabkha widely distributed in the southeastern edge of the Ulan Buh desert.Shrub and nabkha morphological parameters of A.sphaerocphala were measured to explore the relationship between morphological development,sand fixing capacity and shrub morphological parameters.The results show that the shrub height increases in logarithmic curve line with increasing shrub radius.The shrub grows fast in initial stage and then gradually turns to be stable,and its growing velocity in horizontal direction is faster than that in vertical direction.The nabkha radius and height increases with increase of shrub radius and height with significantly linear relationship.The nabkha horizontal development is determined by shrub crown width and the vertical development is determined by shrub height.With the increase of aboveground fresh biomass of A.sphaerocphalashrub,the bottom area, height,volume and sand fixing capacity of the nabkha show very significantly linear changes (p<0.01). The nabkha volume is large when shrub volume is large,and the sand fixing capacity is high.The difference of sand fixing efficiency among different size shrubs is significant(p<0.05).There is a significant correlation between blown sand width (y)and length (x)in the leeward side of A.sphaerocphala shrub (R~2= 0.9917),and the linear regression equation was y=-19.654x+122.41.The blown sand nearly disappears in the distances of 6-7 heights from the A.sphaerocphala shrub in the leeward side.
中文关键词	乌兰布和沙漠 ; 白沙蒿(Artemisia sphaerocphala) ; 灌丛沙堆 ; 形态特征 ; 固沙能力
英文关键词	Ulan Buh Desert Artemisia sphaerocphala nabkha morphological characteristics sand fixing capacity
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:5337095
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233710
作者单位	1.内蒙古农业大学生态环境学院, 呼和浩特, 内蒙古 010018, 中国; 2.国际竹藤中心, 北京 100102, 中国
推荐引用方式 GB/T 7714	高永,党晓宏,虞毅,等. 乌兰布和沙漠东南缘白沙蒿(Artemisia sphaerocphala)灌丛沙堆形态特征与固沙能力[J]. 内蒙古农业大学,2015,35(1):1-7.
APA	高永.,党晓宏.,虞毅.,汪季.,王珊.,...&张惜伟.(2015).乌兰布和沙漠东南缘白沙蒿(Artemisia sphaerocphala)灌丛沙堆形态特征与固沙能力.中国沙漠,35(1),1-7.
MLA	高永,et al."乌兰布和沙漠东南缘白沙蒿(Artemisia sphaerocphala)灌丛沙堆形态特征与固沙能力".中国沙漠 35.1(2015):1-7.