干旱区生态环境知识资源中心(Arid): 科尔沁沙地沙漠化恢复过程中冷蒿种群的扩散对策研究

Arid

	科尔沁沙地沙漠化恢复过程中冷蒿种群的扩散对策研究
其他题名	Research on the spread strategy of Artemisia frigida populations during the desertification recovery process in Horqin sandy land
	孙英杰 1; 李衍青 2; 赵爱芬 3; 黄玉清 1; 周爱萍 1; 罗艾滢 1; 徐广平 1; 姚月锋 1
来源期刊	草业学报
ISSN	1004-5759
出版年	2014
卷号	23 期号:1 页码:3-11
中文摘要	在科尔沁沙地冷蒿种群有2种明显形态差异的个体即直立型和匍匐型2种生长表现型植株。为深刻理解冷蒿种群在沙漠化植被恢复过程中的生态学意义,对不同生长型个体的地上和地下部分的形态特征和繁殖特性,及冷蒿种群的扩散现况进行了初步研究。结果表明,2种表现型冷蒿在枝高、枝条分化、花序数、地下根系等个体形态上均表现出差异性;直立型冷蒿地上部分的高度及平均单株地上生物总量均优于匍匐型冷蒿,匍匐型冷蒿生物量主要集中于靠近基部的0~10 cm处;通过对匍匐型冷蒿的克隆能力调查发现,被沙埋后大多数冷蒿产生分株数在10株以下,分株扩散距离主要在10~20 cm以内;冷蒿枝条被沙埋后其生根数量及长度与当季的降雨量有极大关系,而枝条被沙埋后产生分株对冷蒿种群扩散起着重要的作用;直立型冷蒿主要以种子方式进行繁殖,且种群扩散方向与当地风向有关。
英文摘要	The erect and the creeping types of Artemisia frigida are the two different phenotypes of A. frigida populations in Horqin sandy land. The morphological and reproductive characteristics of above and below ground parts of A. frigida individuals were analyzed. Also, the similarities and differences of the two phenotypes were compared in order to study their strategies for spread. There were significant differences in the number of branches, twigs differentiation, inflorescence and root morphology between the two phenotypes. The average above ground biomasses of the erect type A. frigida was larger than that of the creeping ones which were mainly located at ten centimeters near the individual bases. Studying the cloning capability of creeping type A. frigida, we found that a single plant produced fewer than 10 ramets after being buried by sand and the spread of most of the ramets was 10-20 cm. There was a strong relationship between rooting number and seasonal rainfall after sand burial of branches of A. frigida. Moreover, roots produced after the branches were buried played an important role in the spread of A. frigida populations. The erect type A. frigida mainly reproduced by seeds, and spread was related to the local wind directions.
中文关键词	科尔沁沙地 ; 冷蒿 ; 个体形态 ; 沙埋 ; 扩散对策
英文关键词	Horqin sandy land Artemisia frigida individual morphology sand burial diffusion strategy
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5056957
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230861
作者单位	1.广西壮族自治区中国科学院广西植物研究所, 桂林, 广西 541006, 中国; 2.中国地质科学院岩溶地质研究所, 桂林, 广西 541004, 中国; 3.鲁东大学生命科学学院, 烟台, 山东 264000, 中国
推荐引用方式 GB/T 7714	孙英杰,李衍青,赵爱芬,等. 科尔沁沙地沙漠化恢复过程中冷蒿种群的扩散对策研究[J],2014,23(1):3-11.
APA	孙英杰.,李衍青.,赵爱芬.,黄玉清.,周爱萍.,...&姚月锋.(2014).科尔沁沙地沙漠化恢复过程中冷蒿种群的扩散对策研究.草业学报,23(1),3-11.
MLA	孙英杰,et al."科尔沁沙地沙漠化恢复过程中冷蒿种群的扩散对策研究".草业学报 23.1(2014):3-11.