Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China

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	Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China
	Zhao, Q; Zeng, DH; Fan, ZP; Lee, DK; Fan, ZP, Chinese Acad Sci, Inst Appl Ecol, Daqinggou Ecol Stn, Shenyang 110016, Peoples R China
刊名	PEDOSPHERE
	2008
卷号	18 期号:6 页码:741-748
关键词	Afforestation Horqin Sandy Land Soil Phosphorus Vegetation Restoration
ISSN号	1002-0160
英文摘要	In the past 50 years, large areas of the Horqin sandy land were afforested to prevent desertification. Although the afforestation policy appears successful, many people now doubt whether it is suitable to plant trees with high density on the poor soils in semiarid regions. Little is known about the impacts of afforestation on the sandy soil properties, although the evaluation of these impacts is fundamental to judge the rationality of afforestation policy. Soil phosphorus (P) fractions, acid phosphomonoesterase activities, and other soil chemical properties were compared among five adjoining typical ecosystems on poor sandy soils in southeastern Horqin sandy land. The ecosystems studied are natural elm savanna, degraded grassland, Mongolian pine (Pinus sylvestris var. mongolica) plantation, Chinese pine (Pinus tabulaeformis) plantation, and mixed plantation of Mongolian pine and poplar (Populus simonii). The results showed that organic P dominated soil P (47%-65%) was the principal source of available P. The degradation of elm savanna to grassland significantly reduced soil pH and resulted in an overall reduction in soil fertility, although slightly increased labile inorganic P. Grassland afforestation had no significant influence on soil pH, organic carbon, and total N but significantly reduced total P. Impacts of grassland afforestation on soil P fractions depended on tree species. Natural elm savanna had higher soil P conserving ability than artificial plantations. Therefore, with the aim of developing a sustainable ecosystem, we suggested that vegetations with low nutrient demand (particularly P) and efficient nutrient cycling would be more suitable for ecosystem restoration in the semiarid region.
学科主题	Soil Science
语种	英语
WOS记录号	WOS:000261548700007
资助机构	National Natural Science Foundation of China [30471377]; Science and Engineering Foundation of Korea ; National Key Technologies R&D Programs of China [2005BA517A03, 2006BAC01A12]
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54301]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Fan, ZP, Chinese Acad Sci, Inst Appl Ecol, Daqinggou Ecol Stn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Q,Zeng, DH,Fan, ZP,et al. Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China[J]. PEDOSPHERE,2008,18(6):741-748.
APA	Zhao, Q,Zeng, DH,Fan, ZP,Lee, DK,&Fan, ZP, Chinese Acad Sci, Inst Appl Ecol, Daqinggou Ecol Stn, Shenyang 110016, Peoples R China.(2008).Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China.PEDOSPHERE,18(6),741-748.
MLA	Zhao, Q,et al."Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China".PEDOSPHERE 18.6(2008):741-748.