干旱区生态环境知识资源中心(Arid): 生物结皮层小石藓在不同土壤中繁殖适应性及个体形态特征比较研究

Arid

	生物结皮层小石藓在不同土壤中繁殖适应性及个体形态特征比较研究
其他题名	Study on reproductive adaptability and morphological parameters of Weissia controversa Hedw from biotic soil crust in different soils
	刘春晖; 薛达元; 田桂泉
来源期刊	生态科学
ISSN	1008-8873
出版年	2013
卷号	32 期号:6 页码:731-737
中文摘要	以沙地与黄土丘陵区生物结皮层的小石藓(Weissia controversa Hedw)为材料,通过繁殖试验和形态解剖试验研究其在8种不同土壤类型的种群增长和个体形态特征,以揭示对不同土壤的繁殖及形态适应性。结果表明:(1)小石藓的环境耐受范围较宽,在不同土壤上的生长状况存在差异。其中栗钙土以K 值9177(株)表现为最适,小石藓萌发期表现为深层黄绵土(a=5.811)最短;瞬时增长率为半固定土和杨树林土最高(r=0.098)。(2)除深层黄绵土和黑钙土外,小石藓在其余6种土壤条件下的生长繁殖曲线决定系数R~2>0.95,对Logistic曲线的拟合度较高;(3)在形态学特征比较中,栗钙土、固定风沙土在植株高度、中茎叶片间距、中茎宽度及叶宽、叶尖长、叶轴长上与其他6种土壤间差异显著(P<0.05),说明小石藓个体形态特征对干旱半干旱地区环境的适应,结合其繁殖学特征,也说明小石藓对环境的双重选择适应性。
英文摘要	The reproductive test and morphological anatomy test were carried out to investigate the population growth and individual morphology of Weissia controversa Hedw from biotic soil crust in sandy land and the loess plateau region in 8 different soils types, and hence to reveal the reproduction and adaptation of W. controversa to different soils. The results showed that the growth of W. controversa was different in various soils. In chestnut soil, the K-value was the highest (K=9177). Germination period in loess soil was the shortest (a=5.811) and instantaneous growth rates in semi-fixed dune soil and poplar plantation soil were the highest (r=0.098). The population reproduction of W. controversa showed a logistic curve except in loess soil and chernozem (R~2>0.95). The plants height, interval between two leaves in each side of stalk, breadth of stalk, breadth of leaf, length of leaf apex, and length of rachis of W. controversa in chestnut soil and semi-fixed dune soil were of obvious differences (p<0.05) as compared to those in other 6 types soils, indicating the adaptation of morphological characteristics of W. controversa to arid and semi-arid region. This, with its propagation characteristics, showed that the adaption of W. controversa has double identity.
中文关键词	生物结皮层 ; 繁殖生长适应性 ; 不同土壤 ; 小石藓
英文关键词	biotic soil crust reproductive adaptation different soils Weissia controversa Hedw
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5121544
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229966
作者单位	刘春晖, 内蒙古师范大学生命科学与技术学院, 呼和浩特, 内蒙古 010022, 中国.; 田桂泉, 内蒙古师范大学生命科学与技术学院, 呼和浩特, 内蒙古 010022, 中国.; 薛达元, 中央民族大学生命与环境科学学院, 北京 100081, 中国.
推荐引用方式 GB/T 7714	刘春晖,薛达元,田桂泉. 生物结皮层小石藓在不同土壤中繁殖适应性及个体形态特征比较研究[J],2013,32(6):731-737.
APA	刘春晖,薛达元,&田桂泉.(2013).生物结皮层小石藓在不同土壤中繁殖适应性及个体形态特征比较研究.生态科学,32(6),731-737.
MLA	刘春晖,et al."生物结皮层小石藓在不同土壤中繁殖适应性及个体形态特征比较研究".生态科学 32.6(2013):731-737.