Seasonal variations in phosphorus fractions in semiarid sandy soils under different vegetation types

CORC > 沈阳应用生态研究所 > 中国科学院沈阳应用生态研究所 > 沈阳应用生态研究所 > 期刊论文

	Seasonal variations in phosphorus fractions in semiarid sandy soils under different vegetation types
	Zhao, Q ; Zeng, DH ; Fan, ZP ; Yu, ZY ; Hu, YL ; Zhang, JW
刊名	FOREST ECOLOGY AND MANAGEMENT
	2009
卷号	258 期号:7 页码:1376-1382
关键词	Forest plantations Litter decomposition Savanna Semiarid region Soil P dynamics
ISSN号	0378-1127
通讯作者	Zeng, DH, Chinese Acad Sci, Inst Appl Ecol, Daqinggou Ecol Stn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
中文摘要	We investigated the seasonal patterns of soil phosphorus (P) fractions under five vegetation types - Ulmus macrocarpa savanna, grassland, Pinus sylvestris var. mongolica plantation, Pinus tabulaeformis plantation, and Populus simonii plantation - in the southeastern Keerqin Sandy Lands of China. The measured P fractions (0-20 cm depth) included: soil total P (TP), total organic and inorganic P (TPo and TPi), bicarbonate extractable organic and inorganic P (BPo and BPi), microbial biomass P (MBP), and in situ resin-adsorbed P (resin-P). Soil TP and TPo concentrations in the savanna and grassland were significantly lower in summer than in spring and autumn. However, they were relatively stable in three forest plantations. Soil labile P fractions showed a significant seasonal pattern under all vegetation types with the peak in summer, except soil MBP that was constant in the savanna and grassland and BPo that decreased over time in the savanna. This pattern of labile P fractions was attributed to a combination of seasonal climatic changes, low P availability, as well as the biological controls of soil P transformation in the study area. Litter decomposition played a key role in soil P availability. The monthly resin-P released from litter decomposition in summer was 2.6-7.4 times greater than in other seasons, and was 1.7-3.4 times of that in the 10 cm depth soil. Concentrations of soil P fractions were obviously affected by vegetation type. The savanna had the highest total P and MBP concentrations and the P. tabulaeformis plantation had the highest BPi and resin-P among all vegetation types. Among forest plantations, P. simonii plantation had the highest total P and MBP. These results suggest that U. macrocarpa savanna is the best system conserving soil nutrient (particularly P) stocks and microbial activity, followed by the grassland and P. simonii plantation, while the pine plantations are the worst. (C) 2009 Elsevier B.V. All rights reserved.
学科主题	Forestry
收录类别	SCI
资助信息	National Natural Science Foundation of China [30800887, 30872011]; National Key Technology R&D Program of China [2006BAD26B0201-1, 2006BAC01A12]; National Key Basic Research Program of China [2007CB106803]
语种	英语
WOS记录号	WOS:000270152300041
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54043]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Zhao, Q,Zeng, DH,Fan, ZP,et al. Seasonal variations in phosphorus fractions in semiarid sandy soils under different vegetation types[J]. FOREST ECOLOGY AND MANAGEMENT,2009,258(7):1376-1382.
APA	Zhao, Q,Zeng, DH,Fan, ZP,Yu, ZY,Hu, YL,&Zhang, JW.(2009).Seasonal variations in phosphorus fractions in semiarid sandy soils under different vegetation types.FOREST ECOLOGY AND MANAGEMENT,258(7),1376-1382.
MLA	Zhao, Q,et al."Seasonal variations in phosphorus fractions in semiarid sandy soils under different vegetation types".FOREST ECOLOGY AND MANAGEMENT 258.7(2009):1376-1382.