Responses of soil phosphorus fractions to gap size in a reforested spruce forest

doi:10.1016/j.geoderma.2016.05.023

	Responses of soil phosphorus fractions to gap size in a reforested spruce forest
	Hu, B; Bao, WK (reprint author), Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China.; Tian, GL; Bao, WK; Pang, XY; Yang, B
刊名	GEODERMA
	2016
卷号	279 页码:61-69
关键词	Gap Size Soil Phosphorus Fraction Soil Property Phosphatase Activity Precipitation Distribution
DOI	10.1016/j.geoderma.2016.05.023
产权排序	1
文献子类	Article
英文摘要	Gap created by thinning is a vital practice for the management of degraded forest. However, little information is available about the change in soil P fractions following the gap formation. This study investigated the effects of three gap sizes on soil P fractions in a reforested spruce (Picea asperata) forest on a multi-year scale. We created gaps of four sizes at 0, 74, 109, and 196 m(2) by thinning in a 26-year-old reforested spruce forest in Maoxian, northwestern Sichuan, China. Soil samples were collected in August yearly from 2008 to 2013. The Bowman and Cole soil P fractionation procedure was used to obtain two inorganic P fractions (P-i) and five organic P fractions (P-o). Thinning did not change the soil total P, total P-o, and P-i concentration but significantly influenced soil available P fractions. Intermediate gap (MG) and large gap (LG) treatments increased soil labile inorganic phosphorus (extracted by NaHCO3) in the year with more precipitation and balanced distribution, and the intermediately labile inorganic and organic phosphorus concentrations (extracted by HCl) in the year with less precipitation after thinning. By contrast, resistant P fractions (extracted by NaOH and H2SO4) were not affected by the gap formation. Improvement in soil moisture, organic matter, and microbial and phosphatase activity by the gap formation contributed to the increase in labile P by thinning. Our results highlighted that the effect of gap size on soil microenvironment is the valuable information for assessing the response of soil nutrients, such as soil P to the forest management. (C) 2016 Elsevier B.V. All rights reserved.
学科主题	Agriculture
资助项目	中国科学院山地生态恢复与生物资源利用重点实验室
语种	英语
资助机构	National Natural Science Foundation of China [31400530, 31270492] ; National Natural Science Foundation of China [31400530, 31270492] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05070306] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05070306] ; National Science and Technology Pillar Program in 12th Five-year Plan of China [2011BAC09B04-02] ; National Science and Technology Pillar Program in 12th Five-year Plan of China [2011BAC09B04-02] ; National Natural Science Foundation of China [31400530, 31270492] ; National Natural Science Foundation of China [31400530, 31270492] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05070306] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05070306] ; National Science and Technology Pillar Program in 12th Five-year Plan of China [2011BAC09B04-02] ; National Science and Technology Pillar Program in 12th Five-year Plan of China [2011BAC09B04-02]
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/28106]
专题	成都生物研究所_生态研究
通讯作者	Bao, WK (reprint author), Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China.; Pang, XY
推荐引用方式 GB/T 7714	Hu, B,Bao, WK ,Tian, GL,et al. Responses of soil phosphorus fractions to gap size in a reforested spruce forest[J]. GEODERMA,2016,279:61-69.
APA	Hu, B,Bao, WK ,Tian, GL,Bao, WK,Pang, XY,&Yang, B.(2016).Responses of soil phosphorus fractions to gap size in a reforested spruce forest.GEODERMA,279,61-69.
MLA	Hu, B,et al."Responses of soil phosphorus fractions to gap size in a reforested spruce forest".GEODERMA 279(2016):61-69.