干旱区生态环境知识资源中心(Arid): Seasonal Variability in Soil Inorganic Nitrogen Across Borders Between Woodland and Farmland in the Songnen Plain of Northeast China

Arid

DOI	10.1016/S1002-0160(13)60040-5
	Seasonal Variability in Soil Inorganic Nitrogen Across Borders Between Woodland and Farmland in the Songnen Plain of Northeast China
	Lin Changcun; Fu Yao; Liu Li; Wang Kun; Wang Deli
来源期刊	Pedosphere
ISSN	1002-0160
出版年	2013
卷号	23 期号:4 页码:472-481
英文摘要	To study the seasonal variability of soil inorganic nitrogen (N) across borders at the woodland-farmland ecotone and potential mechanisms, contents of soil inorganic N were measured during the dry season (May 20 and June 30) and the rainy season (August 10 and September 20) of 2006 in the Songnen Plain of Northeast China. The borders between farmland and woodland were determined by a border-and-ecotone detection analysis (BEDA). The ecotone limits, often referred to as the depth-of-edge influence (DEI), are critical for determining the scale at which edge effect operates. The results showed that the soil inorganic N border between the woodland and farmland was located further toward the woodland interior during the rainy season (DEI = 53.4 8.7 m, August 10) than during the dry season (DEI = 35.0 12.6 m, May 20). The seasonal variability in the soil inorganic N border was found to be associated with seasonal changes of deposition flux of N (the correlation coefficients between them for the dry season and rainy season were 0.61 and 0.67, respectively), which resulted from foliation patterns of trees and crops. Accordingly, the leaf area index at woodland edges was lower than that in the woodland interior, so woodland edges captured large amounts of atmosphere nitrogen deposition. The average DEI was 44.1 m, which was in accordance with the values of other temperate forest boundaries in literatures; therefore, BEDA was an appropriate method to estimate the borders of ecotones.
英文关键词	depth-of-edge influence ecotone semi-arid woodland edge
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:4898504
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335209
作者单位	Lin Changcun, The Academy of Forestry, Beijing Forestry University, Beijing 100083, China.; Fu Yao, Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education;;Key Laboratory of Ecological Restoration and Ecosystem Management of Jilin Province, Changchun, Jilin 130024, China.; Liu Li, Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education;;Key Laboratory of Ecological Restoration and Ecosystem Management of Jilin Province, Changchun, Jilin 130024, China.; Wang Deli, Institute of Grassland Science, Key Laboratory of Vegetation Ecology, Ministry of Education;;Key Laboratory of Ecological Restoration and Ecosystem Management of Jilin Province, Changchun, Jilin 130024, China.; Wang Kun, Department of Grassland Science, China Agricultural University, Beijing 100193, China.
推荐引用方式 GB/T 7714	Lin Changcun,Fu Yao,Liu Li,et al. Seasonal Variability in Soil Inorganic Nitrogen Across Borders Between Woodland and Farmland in the Songnen Plain of Northeast China[J],2013,23(4):472-481.
APA	Lin Changcun,Fu Yao,Liu Li,Wang Kun,&Wang Deli.(2013).Seasonal Variability in Soil Inorganic Nitrogen Across Borders Between Woodland and Farmland in the Songnen Plain of Northeast China.Pedosphere,23(4),472-481.
MLA	Lin Changcun,et al."Seasonal Variability in Soil Inorganic Nitrogen Across Borders Between Woodland and Farmland in the Songnen Plain of Northeast China".Pedosphere 23.4(2013):472-481.