农业小流域源头区池塘底泥磷形态和吸附特征

生态与农村环境学报 ›› 2014, Vol. 30 ›› Issue (5): 634-639.doi:

农业小流域源头区池塘底泥磷形态和吸附特征

李红芳,刘锋,杨凤飞,张树楠,肖润林,吴金水

中国科学院亚热带农业生态研究所

收稿日期:2014-03-10 修回日期:2014-06-22 出版日期:2014-09-25 发布日期:2014-10-11
通讯作者: 肖润林中国科学院亚热带农业生态研究所 E-mail:xiaorl@isa.ac.cn
作者简介:李红芳（１９８９—），女，河南安阳人，硕士生，研究方向为土壤环境与农业生态。E-mail:2008lhfok@163.com
基金资助:
中国科学院重点部署项目（ＫＺＺＤ－ＥＷ－１１－０３，ＫＺＺＤ－ＥＷ－１０－０５）； “十二五”国家科技支撑计划（２０１２ＢＡＤ１４Ｂ１７）

Forms and Adsorption Behavior of Phosphorus in Pond Sediments in the Headwater Area of an Agricultural Watershed

LI Hong-Fang, LIU Feng, YANG Feng-Fei, ZHANG Shu-Nan, XIAO Run-Lin, WU Jin-Shui

Institute of Subtropical Agriculture,Chinese Academy of Sciences

Received:2014-03-10 Revised:2014-06-22 Online:2014-09-25 Published:2014-10-11
Contact: XIAO Run-Lin Institute of Subtropical Agriculture,Chinese Academy of Sciences E-mail:xiaorl@isa.ac.cn

摘要/Abstract

摘要：

选择开慧河小流域源头区为研究对象，分析３类池塘（近年来由农田改建的人工塘为第Ⅰ 类，受人为影响大的山边塘为第Ⅱ 类，受人为影响小的山边塘为第Ⅲ类）的水质、底泥理化性质和底泥磷吸附特性。结果表明，３类池塘底泥的全磷、草酸提取态磷、不同形态无机磷（ＮＨ_４Ｃｌ-Ｐ除外）以及生物可利用性磷（ＢＡＰ）含量从大到小依次均为Ⅰ、Ⅱ和Ⅲ类，与３类池塘水质状况相一致。无机态磷中不同形态磷含量从大到小依次为金属氧化物结合态磷（ＮａＯＨ-Ｐ）、钙结合态磷（ＨＣｌ-Ｐ）、可还原态磷（ＢＤ-Ｐ）和弱吸附态磷（ＮＨ_４Ｃｌ-Ｐ），其中，ＮａＯＨ-Ｐ是主要赋存形式（占６８.５１％）。ＢＤ-Ｐ含量和ＨＣｌ-Ｐ含量分别与活性铁（Ｆｅ_ｏｘ）含量呈显著正相关（Ｐ＜０.０１），ＮＨ_４Ｃｌ-Ｐ含量和ＮａＯＨ-Ｐ含量分别与活性铝（Ａｌｏｘ）含量呈显著正相关（Ｐ＜０.０５）。采用Ｌａｎｇｍｕｉｒ方程拟合吸附数据得出：Ⅰ类（塘１、６和１２）、Ⅱ类（塘１０和１１）和Ⅲ类（塘３）池塘底泥吸附／解吸平衡磷浓度（Ｃ_０ＥＰ）、磷最大吸附量（Ｓ_ｍａｘ）和磷吸附键能参数（Ｋ_ｃ）分别为０.０２～０. １２ｍｇ·Ｌ^－１、５２６.３２～８２６.４５ｍｇ·ｋｇ^－１和０.３１～１.１１Ｌ·ｍｇ^－１。其中，塘６底泥Ｓ_ｍａｘ和Ｋ_ｃ最小，Ｃ_０ＥＰ最大，潜在磷释放风险大；塘１０和１１具有较高的Ｓ_ｍａｘ、Ｋ_ｃ及较低的Ｃ_０ＥＰ值；塘３底泥对磷的吸附能力介于Ⅰ和Ⅱ类塘之间。可见，研究区人类活动输入外源污染物在一定程度上影响了池塘底泥磷含量和吸附特性，在控制农业小流域源头磷污染的同时应考虑磷的流入负荷及水体底泥的磷吸附能力。

关键词: 农业小流域, 池塘, 底泥, 磷形态, 吸附

Abstract:

The Kaihui River watershed was selected as study area, where 12 ponds were sorted into 3 types: Type I,ponds excavated out of farmland in recent years; Type II,, ponds at the foot of hills under intense human disturbance; Type III, ponds at the foot of hills under little human disturbance. Water quality, physic-chemical properties of sediment and phosphorous adsorption behavior in sediment of the ponds were analyzed relative to type of pond. Results show that the three types of ponds followed an order of TypeⅠ﹥Ⅱ﹥Ⅲ in concentration of total P, oxalate extracted P, inorganic P of all other forms (excepted NH₄Cl-P), and bio-available P, which corresponded to the order of the ponds in water pollution degree. Among the inorganic forms of phosphorous, an order was found of metal oxide bound P (NaOH-P)﹥calcium bound P (HCl-P)﹥reducible P (BD-P)﹥loosely sorbed P (NH₄Cl-P) in terms of concentration. NaOH-P was the dominant form, accounting for 68.51%. Concentrations of BD-P and HCl-P were significantly and positively related to Fe_ox (P<0.01), while the concentrations of NH₄Cl-P and NaOH-P were to Al_ox (P<0.05). Fitting of P adsorption with the Langmuir equation found that the equilibrium P concentration (C_0EP), maximum sorption (S_max), and adsorption constant (K_c) in the sediments of the 12 ponds ranged from 0.02 - 0.12 mg·L^-1, 526.32 - 826.45 mg·kg^-1, and 0.31 - 1.11 L·mg^-1, respectively. The sediment in Pond 6 (TypeⅠ) was the highest in C_0EP and the lowest in S_maxand K_c, so tha, it was the highest in potential P releasing risk. Pond 10 and Pond 11 (TypeⅡ) were quite high in K_c and S_max and relatively low in C_0EP. Pond 3 varied between Type I and Type II in P adsorption capacity. It is, therefore, quite obvious that the input of extraneous pollutants through human activities has a certain impact on P content and P adsorption behavior in the sediments of the ponds in the study area, and that in controlling P pollution in headwater regions of agricultural watersheds, it is essential to put P input load and P adsorption capacity of pond sediments under consideration.

Key words: agricultural watershed, pond, sediment, phosphorus form, adsorption

中图分类号:

李红芳, 刘锋, 杨凤飞, 张树楠, 肖润林, 吴金水. 农业小流域源头区池塘底泥磷形态和吸附特征[J]. 生态与农村环境学报, 2014, 30(5): 634-639.

LI Hong-Fang, LIU Feng, YANG Feng-Fei, ZHANG Shu-Nan, XIAO Run-Lin, WU Jin-Shui. Forms and Adsorption Behavior of Phosphorus in Pond Sediments in the Headwater Area of an Agricultural Watershed[J]. Journal of Ecology and Rural Environment, 2014, 30(5): 634-639.

0
/ / 推荐

导出引用管理器 EndNote|Reference Manager|ProCite|BibTeX|RefWorks

链接本文: http://www.ere.ac.cn/CN/

http://www.ere.ac.cn/CN/Y2014/V30/I5/634

[1]	曹俊敏, 李鑫, 徐德福. 骨炭对地下水中氟的吸附及去除能力研究[J]. 生态与农村环境学报, 2019, 35(8): 1064-1070.
[2]	邵爱云, 程德义, 代静玉, 杜琪雯, 杜超, 黄兆琴. 巯基改性稻壳炭对水中Cd²⁺的吸附特性[J]. 生态与农村环境学报, 2019, 35(8): 1071-1079.
[3]	常会庆, 朱晓辉, 郑彩杰, 焦常锋, 王启震, 吴杰. 颗粒无烟煤活性炭去除水体中低浓度磷酸盐研究[J]. 生态与农村环境学报, 2019, 35(8): 1058-1063.
[4]	王丽, 胡苗, 徐建军. 虾壳生物质炭对水体中Cr⁶⁺的吸附[J]. 生态与农村环境学报, 2019, 35(8): 1080-1088.
[5]	王恒煦, 刘泽平, 王志刚, 徐伟慧, 郭茹鑫. 3株芽孢杆菌在水稻根际定殖促生及其在土壤中的存活[J]. 生态与农村环境学报, 2019, 35(7): 892-899.
[6]	马洁晨, 汪新亮, 张学胜, 李玉成, 郑刘根, 王宁. 不同热解温度龙虾壳生物炭特征及对Zn²⁺的吸附机制[J]. 生态与农村环境学报, 2019, 35(7): 900-908.
[7]	干方群, 徐子昊, 杨一帆, 秦品珠, 唐荣, 杭小帅. 高岭土对畜禽废水中磷的净化效果及其费效分析[J]. 生态与农村环境学报, 2019, 35(6): 795-800.
[8]	丁惠明, 沈彩娟, 陈雯, 何捷, 梁爽, 张俊彪, 蔡春芳. 池塘养殖换水目的和水质状态对换水频率的影响[J]. 生态与农村环境学报, 2019, 35(6): 781-786.
[9]	王慧, 唐杉, 韩上, 李敏, 武际, 程文龙, 吴萍萍. 磷对镉离子在针铁矿及针铁矿-胡敏酸复合体表面吸附的影响[J]. 生态与农村环境学报, 2019, 35(5): 659-667.
[10]	解宇峰, 程德义, 石佳奇, 祝欣, 李志琳, 王磊. 高锰酸钾改性小麦秸秆吸附Cd²⁺的性能研究[J]. 生态与农村环境学报, 2019, 35(5): 668-674.
[11]	王一楷, 李振国, 陈志彪. 太湖西部沉积物磷形态剖面分布和成因分析[J]. 生态与农村环境学报, 2019, 35(4): 426-432.
[12]	杨欣妍, 魏儒平, 杨柳燕. 污染底泥制备陶粒及除磷潜力研究[J]. 生态与农村环境学报, 2019, 35(3): 368-376.
[13]	霍庆霖, 肖慧, 王俊杰, 董袁媛, 张雨豪, 王丹, 程章, 张世熔, 徐小逊. 成都市部分区域淡水混养池塘水体与沉积物中重金属风险评价及分配特征[J]. 生态与农村环境学报, 2019, 35(2): 180-188.
[14]	汪婵娟, 熊治廷, 徐仲瑞, 刘荣相. 有色金属矿区植物根际耐镉菌的分离鉴定与镉吸附特性[J]. 生态与农村环境学报, 2018, 34(5): 448-455.
[15]	申磊, 荆延德, 孙小银, 郝郝, 曹永强. 动植物来源生物炭对水体中Cd²⁺的吸附特性[J]. 生态与农村环境学报, 2018, 34(4): 363-370.