干旱区生态环境知识资源中心(Arid): Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China

Arid

	Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China
	Qiong ZHAO; De-Hui ZENG; Zhi-Ping FAN; LEE D.K.
来源期刊	Pedosphere
ISSN	1002-0160
出版年	2008
卷号	18 期号:6 页码:741-748
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.
英文关键词	afforestation Horqin sandy land soil phosphorus vegetation restoration
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:3410828
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334987
作者单位	Qiong ZHAO, Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China.; De-Hui ZENG, Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China.; Zhi-Ping FAN, Daqinggou Ecological Station, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China.; LEE D.K., Department of Forest Sciences, Seoul National University, Seoul.
推荐引用方式 GB/T 7714	Qiong ZHAO,De-Hui ZENG,Zhi-Ping FAN,et al. Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China[J],2008,18(6):741-748.
APA	Qiong ZHAO,De-Hui ZENG,Zhi-Ping FAN,&LEE D.K..(2008).Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China.Pedosphere,18(6),741-748.
MLA	Qiong ZHAO,et al."Effect of Land Cover Change on Soil Phosphorus Fractions in Southeastern Horqin Sandy Land, Northern China".Pedosphere 18.6(2008):741-748.