干旱区生态环境知识资源中心(Arid): 黄土丘陵沟壑区生物土壤结皮理化性质

Arid

	黄土丘陵沟壑区生物土壤结皮理化性质
其他题名	Study on Physicochemical Properties of Biological Soil Crusts in the Hilly-gully Regions of the Loess Plateau
	王蕊 1; 朱清科 1; 卜楠 1; 秦伟 2; 安彦川 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2010
卷号	27 期号:3 页码:401-408
中文摘要	为了解黄土丘陵沟壑区生物结皮发育过程中理化性质的变化,分析了不同盖度水平结皮的机械组成、养分、化学元素以及土壤因子与生物结皮盖度的相关性和结皮发育过程中土壤因子之间的相互作用.结果表明: 随着结皮的发育,土壤有机质、全氮、全钾、速效氮、速效磷、速效钾含量均呈增长趋势, pH值则相反;土壤细砂粒含量 (0.25~0.05mm)减少,粗粉粒(0.05~0.01mm)含量增加;土壤中的化学元素含量也呈增加趋势.土壤有机质、全氮、全磷、pH 值、细砂粒、粗粉粒、Ca, Mg, Na和Fe含量与生物结皮的形成发育密切相关(P<0.01).此外,各土壤因子之间存在着相关关系,特别是粗粉粒含量和pH值,与其他因子有显著的相关性
英文摘要	Biological soil crusts is extensively distributed in arid and semiarid regions, and it is a complex mixture of cyanobacteria, green algae, phycolichens, mosses, liverworts, fungi and bacteria. Biological soil crusts performs many ecological functions, including the improvement of soil structure, protection of soil surface from water and wind erosion, increase of water infiltration and retention, and habitat supply for other species.It is of great significance to research the ecological role of biological soil crusts in the Loess Plateau with the severe natural conditions and fragile environment in China. Based on the field investigation in Wuqi County, Shaanxi Province in July 2008 and the laboratory analysis, this paper studies the soil mechanical composition, soil nutrients and chemical elements of biological soil crusts with different coverage, relationship between soil factors and biological soil crusts coverage, and interrelation among soil factors during the development of biological soil crusts for the purpose of understanding the change of physicochemical properties of biological soil crusts in the course of its development in hill y-gully regions of the Loess Plateau. The results show that the contents of organic matter, total nitrogen, total potassium, available nitrogen, available phosphorus and available potassium are increased with the development of biological soil crust, but the pH value is decreased. The increase of total nitrogen content is the highest, but that of available soil nutrient content was less. The biological soil crusts in the hilly-gully regions of the Loess Plateau is mainly composed of the fine sand(0.25-0.05mm in grain size)and coarse silt(0.05-0.01mm), and their proportion accounts for about 80%.During the development of biological soil crust, the proportion of fine sand (0.25-0.05mm)is increased, but that of coarse silt(0.05-0.01mm)is decreased. With the increase of biological soil crusts coverage, the contents of soil chemical elements including K, Na, Ca, Mg, Fe, Mn, Cu, Zn, Cr, Ni and Co are also in an increase trend. The contents of soil organic matter, total nitrogen, total phosphorus, fine sand, coarse silt, Ca, Mg, Na, and Fe are closely related to the formation of biological soil crusts (P<0.01). In addition, during the process of biological soil crusts formation, there are the interrelations among soil factors
中文关键词	生物土壤结皮 ; 土壤理化性质 ; 结皮盖度 ; 黄土丘陵沟壑区 ; 吴起县 ; 陕西
英文关键词	biological soil crusts soil physicochemical property crusts coverage hilly-gully regions of the Loess Plateau Wuqi county Shaanxi province
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:3930788
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225069
作者单位	1.北京林业大学, 水土保持与荒漠化防治教育部重点实验室, 北京 100083, 中国; 2.中国水利水电科学研究院泥沙研究所, 水土保持与荒漠化防治教育部重点实验室, 北京 100083, 中国
推荐引用方式 GB/T 7714	王蕊,朱清科,卜楠,等. 黄土丘陵沟壑区生物土壤结皮理化性质[J]. 北京林业大学,2010,27(3):401-408.
APA	王蕊,朱清科,卜楠,秦伟,&安彦川.(2010).黄土丘陵沟壑区生物土壤结皮理化性质.干旱区研究,27(3),401-408.
MLA	王蕊,et al."黄土丘陵沟壑区生物土壤结皮理化性质".干旱区研究 27.3(2010):401-408.