Phosphorus sorption-desorption characteristics of ditch sediments from different land uses in a small headwater catchment in the central Sichuan Basin of China

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 > Journal of Mountain Science > Journal of Mountain Science-2012 > Vol9 No.3

	Phosphorus sorption-desorption characteristics of ditch sediments from different land uses in a small headwater catchment in the central Sichuan Basin of China
	Wang Zhenhua 1,2,3; He Min 1,4; Wang Tao1,2 ; Zhu Bo1,2
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2012-06-01
卷号	9 期号:3 页码:441-450
关键词	Ditch sediment Phosphorus sorption-desorption Sediment properties Land use
ISSN号	1672-6316
通讯作者	ZHU Bo
英文摘要	Investigation of phosphorus (P) sorption-desorption characteristics of drainage ditch sediments is important for better understanding on sediment P transport behaviors in ditches. Surface ditch sediment samples were collected from headwater subcatchment of forestland, sloping cropland, paddy field, and residential area in a representative catchment in the central Sichuan Basin. These sediment samples were used for determination of P sorption-desorption characteristics by a batch equilibrium technique. Results showed that the maximum P sorption capacities (Q(m)) in the sediments ranged from 159.7 to 263.7 mg/kg, while higher Q(m) were observed in the ditch sediments from the paddy fields. The Q(m) was significantly and positively correlated with oxalate-extractable Fe and Al oxides (r=0.97 and 0.98, p < 0.01), clay fraction (r = 0.78, p < 0.05) and organic matter (r = 0.95, p < 0.01). Sediment pH, clay and organic matter influenced the P sorption through amorphous Fe and Al oxides. CaCO3 content was negatively correlated with the Q(m) (r = -0.83, p < 0.05), implying that saturated CaCO3 (> 50 g/kg) would not increase P sorption capacity in the ditch sediments. The ditch sediments featured a linear desorption curve, suggesting that P release risk would be enhanced with the increase of the P adsorption. The P desorption rate was positively correlated with Olsen P (r = 0.94, p < 0.01), but negatively related to the fine particle-size fractions (r = -0.92, p < 0.01), the sum of the amorphous Fe and Al oxides (r = -0.67, p < 0.05) and the P sorption capacity (r = -0.59, p < 0.05). The ditch sediments from residential area had a higher P release risk than that from the other ditches of forestland, sloping cropland and paddy field. The P sorption index (PSI) derived from single-point measurement was significantly correlated with the P sorption capacity (r = 0.99, p < 0.01), and could be used for estimating Q(m) as 1.64 times PSI plus 24.0 (Q(m) = 1.64 PSI + 24.0) for similar sediments with highly calcareous soils and sediments. Ditch cleaning and sediment removal for the ditch in residential area were recommended in this area to reduce the P release risk.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	SOIL-PHOSPHORUS ; DRAINAGE DITCHES ; AGRICULTURAL DRAINAGE ; PHOSPHATE SORPTION ; CALCAREOUS SOILS ; WATER-QUALITY ; PURPLE SOILS ; ADSORPTION ; DYNAMICS ; RELEASE
收录类别	SCI
语种	英语
WOS记录号	WOS:000304648300014
公开日期	2013-04-16
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/5112]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2012_Vol9 No.3 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, Key Lab Mt Environm Evolvement & Regulat, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Changjiang River Sci Res Inst, Dept Water Environm Res, Wuhan 430010, Peoples R China 4.Sichuan Agr Univ, Fac Forestry, Yaan 625014, Peoples R China
推荐引用方式 GB/T 7714	Wang Zhenhua,He Min,Wang Tao,et al. Phosphorus sorption-desorption characteristics of ditch sediments from different land uses in a small headwater catchment in the central Sichuan Basin of China[J]. JOURNAL OF MOUNTAIN SCIENCE,2012,9(3):441-450.
APA	Wang Zhenhua,He Min,Wang Tao,&Zhu Bo.(2012).Phosphorus sorption-desorption characteristics of ditch sediments from different land uses in a small headwater catchment in the central Sichuan Basin of China.JOURNAL OF MOUNTAIN SCIENCE,9(3),441-450.
MLA	Wang Zhenhua,et al."Phosphorus sorption-desorption characteristics of ditch sediments from different land uses in a small headwater catchment in the central Sichuan Basin of China".JOURNAL OF MOUNTAIN SCIENCE 9.3(2012):441-450.