干旱区生态环境知识资源中心(Arid): 黄土地表藻类结皮分布影响因素研究

Arid

	黄土地表藻类结皮分布影响因素研究
其他题名	Distribution of Algae Crusts and Its Influencing Factors on the Soil Surface of the Loess Plateau
	吕建亮 1; 廖超英 1; 孙长忠 2; 刘莉丽 3; 王翠平 1
来源期刊	西北林学院学报
ISSN	1001-7461
出版年	2010
卷号	25 期号:1 页码:11-14
中文摘要	以仅见于黄土高原半干旱区局部地段的黄土藻类群落为对象, 分别从植被类型、坡向、坡度、地貌部位、干扰程度等方面对其分布规律进行系统地研究.通过调查, 测定了藻类结皮在不同立地条件下的结皮厚度、植被分布、结皮盖度等指标.结果表明: ①不同植被类型对藻类结皮盖度和厚度的影响呈现出不同的规律性.植被类型不同, 藻类结皮盖度不同, 荒坡>樟子松林>油松林.但结皮厚度表现出相反的特点, 即油松林>樟子松林>荒坡地.②坡向对藻类结皮分布有明显影响.阴坡藻类结皮盖度和厚度均大于阳坡.③坡度对藻类结皮分布的影响是在多种因素的共同作用下形成的, 不同坡度对藻类结皮盖度的影响差异不显著; 但影响结皮厚度, 即平缓坡>缓坡 >陡坡>极陡坡.④地貌部位对藻类结皮分布有明显影响, 在林地里, 结皮盖度表现为坡上部>坡中部>坡下部.结皮厚度无显著差异.⑤干扰程度对藻类结皮分布具有明显影响, 干扰程度弱, 藻类结皮盖度和厚度均大, 反之则小
英文摘要	Distribution patterns of algae community which is only found in semi-arid area in Loess Plateau were systematically investigated from the aspects of distribution of vegetation types, different slope aspects, different degrees of slopes, different topographic positions, and different disturbance degrees etc. Through the survey, the indicators of algae crust thickness under different site conditions, the vegetation distribution, the cover degree of crust and other environment factors were measured. The results were as follows.I.The influences of different vegetation types on the algae coverage and thickness exhibited regularties. Coverages were different in different vegetation types and in the order of barren slopes > Mongoliam pine forest > Chinese pine forest. But thickness displayed the opposite characteristic, ranked in order of Chinese pine forest > Mongolian pine forest > barren slopes. 2.The effects of different slopes on soil algae crust distribution were significant, the coverage and thickness in the shady slope were bigger than those in the sunny slope. 3.The influence of slope on the algae was an combined action of several factors, the slope degree exhibited little impact on coverge but on thickness, namely conservative slope > gentle slope > steep slope>extremely steep slope.4.The landform spots exhibited significant influence no the algae mantle distribution, in forest land, for the algae coverage was in the order of up slope > middle slope>lower part slope. Mantle thickness is not remarkable difference.5.The degree of disturbance had extreme effect on the algae coverage, the degree of disturbance was weak, the algae mantle coverage was bigger, and vice versa
中文关键词	藻类结皮 ; 黄土地表 ; 分布特点 ; 影响因素
英文关键词	algae crusts the Loess Plateau distribution characteristic influencing factor
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:3935961
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225749
作者单位	1.西北农林科技大学资源环境学院, 杨陵, 陕西 712100, 中国; 2.中国林业科学研究院华北林业实验中心, 北京 102300, 中国; 3.西北农林科技大学林学院, 杨陵, 陕西 712100, 中国
推荐引用方式 GB/T 7714	吕建亮,廖超英,孙长忠,等. 黄土地表藻类结皮分布影响因素研究[J]. 西北农林科技大学,2010,25(1):11-14.
APA	吕建亮,廖超英,孙长忠,刘莉丽,&王翠平.(2010).黄土地表藻类结皮分布影响因素研究.西北林学院学报,25(1),11-14.
MLA	吕建亮,et al."黄土地表藻类结皮分布影响因素研究".西北林学院学报 25.1(2010):11-14.