Phosphorus sorption-desorption by purple soils of China in relation to their properties

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	Phosphorus sorption-desorption by purple soils of China in relation to their properties
	Li, M.; Hou, Y. L.; Zhu, B.
刊名	AUSTRALIAN JOURNAL OF SOIL RESEARCH
	2007
卷号	45 期号:3 页码:182-189
关键词	sorption capacity Fe and Al oxides labile Ca release risk
ISSN号	0004-9573
通讯作者	朱波
合作状况	国内
英文摘要	The understanding of phosphorus (P) sorption and desorption by soil is important for better managing soil P source and relieving water eutrophication. In this study, sorption-desorption behaviour of P was investigated in purple soils, collected from 3 kinds of purple parent materials with different kinds of land cover, in the upper reaches of Yangtze River, China, using a batch equilibrium technique. Results showed that most of the farmed purple soils had P sorption capacity (PSC) values ranging from 476 to 685 mg P/kg, while higher PSC values were observed in the soils from forestland and paddy field. A single-point P sorption index (PSI) was found to be significantly correlated with PSC (R-2 = 0.94, P < 0.001), suggesting its use in estimating PSC across different types of purple soils. The PSC of purple soils was positively and strongly related to the contents of amorphous Fe and Al oxides (r = 0.73, P < 0.001), clay (r = 0.55, P < 0.01), and organic matter (r = 0.50, P < 0.05). Furthermore, the constant relating to binding strength was positively correlated with the content of amorphous Fe and Al oxides (r = 0.66, P < 0.01), but negatively correlated with labile Ca (r = - 0.43, P < 0.05) and soil pH (r = - 0.53, P < 0.01). Some acidic purple soils with high binding energy featured a power desorption curve, suggesting that P release risk can be accelerated once the P sorbed exceeds a certain threshold. Other soils with low binding energy demonstrated a linear desorption curve. The P desorption percentage was significantly correlated with soil test P (r = 0.78, P < 0.01) and the degree of P saturation (r = 0.82, P < 0.01), but negatively correlated with PSC (r = - 0.66, P < 0.01).
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Soil Science
研究领域[WOS]	Agriculture
关键词[WOS]	PHOSPHATE SORPTION ; CALCAREOUS SOILS ; IRON-OXIDES ; INORGANIC-PHOSPHATE ; CALCIUM-CARBONATE ; ANION-ADSORPTION ; SURFACE-AREA ; SANDY SOILS ; SATURATION ; FRACTIONATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000246571100003
公开日期	2012-12-17
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/4561]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Dept Soil Environm Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Grad Sch, Fac Resource & Environm, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Li, M.,Hou, Y. L.,Zhu, B.. Phosphorus sorption-desorption by purple soils of China in relation to their properties[J]. AUSTRALIAN JOURNAL OF SOIL RESEARCH,2007,45(3):182-189.
APA	Li, M.,Hou, Y. L.,&Zhu, B..(2007).Phosphorus sorption-desorption by purple soils of China in relation to their properties.AUSTRALIAN JOURNAL OF SOIL RESEARCH,45(3),182-189.
MLA	Li, M.,et al."Phosphorus sorption-desorption by purple soils of China in relation to their properties".AUSTRALIAN JOURNAL OF SOIL RESEARCH 45.3(2007):182-189.