巢湖十五里河沉积物磷吸收潜力及对外源碳的响应
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摘要
2017年7月(夏季)和2018年1月(冬季),在巢湖十五里河干流的城乡梯度方向选择5个代表性采样点位,采集表层沉积物样,利用实验室培养法,测算沉积物磷的总吸收潜力SPU_(live)、非生物吸收潜力SPU_(kill)和生物吸收潜力SPU_(biotic),评估不同外加碳源(乙酸钠、葡萄糖及两者的混合溶液)对SPU_(biotic)的影响水平.结果表明,十五里河沉积物SPU_(live)存在时空差异性,且表现为SPU_(kill)高于SPU_(biotic);未添加碳源时,夏季和冬季的SPU_(kill)均值分别为3.016μg·(g·h)~(-1)和3.368μg·(g·h)~(-1),SPU_(biotic)均值分别为0.784μg·(g·h)~(-1)和0.323μg·(g·h)~(-1),夏、冬两季的非生物吸收潜力存在显著差异性;添加外源碳后,不仅SPU_(biotic)有了较大幅度的提升,生物因素在沉积物磷吸收中的贡献率水平也有了明显提高,且两者均表现为添加乙酸钠效果最显著,添加葡萄糖效果次之,混合碳源的效果相对较弱.由沉积物磷的生物吸收对外源碳的响应情况,可以判定十五里河沉积物磷吸收存在一定程度的碳限制性.
Surficial sediments were collected from five sampling sites in the mainstream of the Shiwuli River along an urban-rural gradient in the Chaohu Lake basin during July 2017(summer) and January 2018(winter).The total uptake(SPU_(live)),abiotic uptake(SPU_(kill)),and biotic uptake(SPU_(biotic)) of phosphorus by sediments were measured,and uptake responses to different carbon sources(i.e.,sodium acetate,glucose,and a mixture of both) were explored quantitatively through incubation experiments.The results showed that SPU_(live) had obviously spatiotemporal variations across the five sites,and SPU_(kill) was higher than that of SPU_(biotic).Under no carbon added,the mean values of SPU~-_(kill) were 3.016μg·(g·h)~1 and 3.368μg·(g·h)~(-1),and the average values of SPU_(biotic) were 0.784μg·(g·h)~(-1) and 0.323μg·(g·h)~(-1) in summer and winter,respectively.Moreover,significant differences were found in abiotic phosphorus uptake between the two months.In the presence of carbon addition,both the value of SPU_(biotic) and the contribution rate of biotic phosphorus uptake showed a distinct increase.In general,the magnitude and rate of biotic uptake of phosphorus by sediments was highest when sodium acetate was added,followed by glucose,while the effect of mixed carbon was the worst.The responses of biotic phosphorus uptake to carbon addition suggested that the uptake potential of phosphorus by sediments in Shiwuli River was restricted by the carbon availability to some degree.
Surficial sediments were collected from five sampling sites in the mainstream of the Shiwuli River along an urban-rural gradient in the Chaohu Lake basin during July 2017(summer) and January 2018(winter).The total uptake(SPU_(live)),abiotic uptake(SPU_(kill)),and biotic uptake(SPU_(biotic)) of phosphorus by sediments were measured,and uptake responses to different carbon sources(i.e.,sodium acetate,glucose,and a mixture of both) were explored quantitatively through incubation experiments.The results showed that SPU_(live) had obviously spatiotemporal variations across the five sites,and SPU_(kill) was higher than that of SPU_(biotic).Under no carbon added,the mean values of SPU~-_(kill) were 3.016μg·(g·h)~1 and 3.368μg·(g·h)~(-1),and the average values of SPU_(biotic) were 0.784μg·(g·h)~(-1) and 0.323μg·(g·h)~(-1) in summer and winter,respectively.Moreover,significant differences were found in abiotic phosphorus uptake between the two months.In the presence of carbon addition,both the value of SPU_(biotic) and the contribution rate of biotic phosphorus uptake showed a distinct increase.In general,the magnitude and rate of biotic uptake of phosphorus by sediments was highest when sodium acetate was added,followed by glucose,while the effect of mixed carbon was the worst.The responses of biotic phosphorus uptake to carbon addition suggested that the uptake potential of phosphorus by sediments in Shiwuli River was restricted by the carbon availability to some degree.
引文
[1] Maitra N,Manna S K,Samanta S,et al. Ecological significance and phosphorus release potential of phosphate solubilizing bacteria in freshwater ecosystems[J]. Hydrobiologia,2015,745(1):69-83.
[2]刘佳,雷丹,李琼,等.黄柏河流域梯级水库沉积物磷形态特征及磷释放通量分析[J].环境科学,2018,39(4):1608-1615.Liu J,Lei D,Li Q,et al. Characteristics of phosphorus fractions and phosphate diffusion fluxes of sediments in cascade reservoirs of the Huangbai River[J]. Environmental Science,2018,39(4):1608-1615.
[3] Khoshmanesh A,Hart B T,Duncan A,et al. Luxury uptake of phosphorus by sediment bacteria[J]. Water Research,2002,36(3):774-778.
[4] Jaisi D P,How Y,Stout L M,et al. Modeling of biotic and abiotic processes affecting phosphate oxygen isotope ratios in a mineral-water-biota system[J]. Water Research,2017,126:262-273.
[5] Jaisi D P,Kukkadapu R K,Stout L M,et al. Biotic and abiotic pathways of phosphorus cycling in minerals and sediments:Insights from oxygen isotope ratios in phosphate[J].Environmental Science&Technology,2011,45(15):6254-6261.
[6] Sutter M I,Demars B O L,Langan S J. River phosphorus cycling:Separating biotic and abiotic uptake during short-term changes in sewage effluent loading[J]. Water Research,2010,44(15):4425-4436.
[7] Meng J,Yao Q Z,Yu Z G. Particulate phosphorus speciation and phosphate adsorption characteristics associated with sediment grain size[J]. Ecological Engineering,2014,70:140-145.
[8] Mangadze T, Bere T, Mwedzi T. Epilithic diatom flora in contrasting land-use settings in tropical streams, Manyame Catchment,Zimbabwe[J]. Hydrobiologia,2015,753(1):163-173.
[9] Wan J J,Liu X M,Wu C X,et al. Nutrient capture and recycling by periphyton attached to modified agrowaste carriers[J]. Environmental Science and Pollution Research,2016,23(8):8035-8043.
[10] Scinto L J,Reddy K R. Biotic and abiotic uptake of phosphorus by periphyton in a subtropical freshwater wetland[J]. Aquatic Botany,2003,77(3):203-222.
[11] Mc Cormick P V,Shuford III R B E,Chimney M J. Periphyton as a potential phosphorus sink in the everglades nutrient removal project[J]. Ecological Engineering,2006,27(4):279-289.
[12] WolfeⅢJ E,Lind O T. Phosphorus uptake and turnover by periphyton in the presence of suspended clays[J]. Limnology,2010,11(1):31-37.
[13] Lu H Y,Wan J J,Li J Y,et al. Periphytic biofilm:A buffer for phosphorus precipitation and release between sediments and water[J]. Chemosphere,2016,144:2058-2064.
[14] Mc Dowell R W,Elkin K R,Kleinman P J A. Temperature and nitrogen effects on phosphorus uptake by agricultural stream-bed sediments[J]. Journal of Environmental Quality,2017,46(2):295-301.
[15] Li S S,Yuan Z W,Bi J,et al. Anthropogenic phosphorus flow analysis of Hefei City, China[J]. Science of the Total Environment,2010,408(23):5715-5722.
[16]李如忠,秦如彬,高苏蒂,等.城乡交错带典型溪流沟渠氮素污染特征及生态风险分析[J].华北水利水电大学学报(自然科学版),2017,38(3):27-34.Li R Z, Qin R B, Gao S D, et al. Investigation on the characteristics and ecological risk of nitrogen pollution in the streams across the ditches in a urban-rural fringe[J]. Journal of North China University of Water Resources and Electric Power(Natural Science Edition),2017,38(3):27-34.
[17]李如忠,阙凤翔,熊鸿斌,等.巢湖十五里河河床地貌单元沉积物硝化速率及污染特征[J].环境科学,2019,40(1):211-218.Li R Z,Que F X,Xiong H B,et al. Nitrification rates and pollution characteristics of sediments with different geomorphic features in the Shiwuli Stream, Chaohu Lake basin[J].Environmental Science,2019,40(1):211-218.
[18]李如忠,李峰,周爱佳,等.巢湖十五里河沉积物氮磷形态分布及生物有效性[J].环境科学,2012,33(5):1503-1510.Li R Z,Li F,Zhou A J,et al. Distribution and bioavailability of nitrogen and phosphorus species in the sediments from Shiwuli Stream in Lake Chaohu[J]. Environmental Science,2012,33(5):1503-1510.
[19] Lottig N R, Stanley E H. Benthic sediment influence on dissolved phosphorus concentrations in a headwater stream[J].Biogeochemistry,2007,84(3):297-309.
[20]李如忠,叶舟,高苏蒂,等.人为扰动背景下城郊溪流底质磷的生物-非生物吸收潜力分析[J].环境科学,2017,38(8):3235-3242.Li R Z,Ye Z,Gao S D,et al. Biotic and abiotic uptake of phosphorus in benthic sediments of suburban streams under intense human disturbance scenario[J]. Environmental Science,2017,38(8):3235-3242.
[21] Gibson C A, O'reilly C M. Organic matter stoichiometry influences nitrogen and phosphorus uptake in a headwater stream[J]. Freshwater Science,2012,31(2):395-407.
[22] Schade J D,Macneill K,Thomas S A,et al. The stoichiometry of nitrogen and phosphorus spiralling in heterotrophic and autotrophic streams[J]. Freshwater Biology,2011,56(3):424-436.
[23] Aldridge K T,Brookes J D,Ganf G G. Changes in abiotic and biotic phosphorus uptake across a gradient of stream condition[J]. River Research and Applications,2010,26(5):636-649.
[24] Khoshmanesh A,Hart B T,Duncan A,et al. Biotic uptake and release of phosphorus by a wetland sediment[J]. Environmental Technology,1999,20(1):85-91.
[25]裴婷婷,李如忠,高苏蒂,等.合肥城郊典型农田溪流水系统沉积物磷形态及释放风险分析[J].环境科学,2016,37(2):548-557.Pei T T,Li R Z,Gao S D,et al. Phosphorus fractions and release risk in surface sediments of an agricultural headwater stream system in Hefei Suburban,China[J]. Environmental Science,2016,37(2):548-557.
[26]丁瑶,欧阳莉莉,石清,等.特大城市河流表层沉积物磷形态分布及有效性:以成都市为例[J].环境科学,2019,40(1):219-227.Ding Y,Ouyang L L,Shi Q,et al. Distribution and bioavability of phosphorus in surface sediments in megalopolis:A case study of Chengdu[J]. Environmental Science,2019,40(1):219-227.
[2]刘佳,雷丹,李琼,等.黄柏河流域梯级水库沉积物磷形态特征及磷释放通量分析[J].环境科学,2018,39(4):1608-1615.Liu J,Lei D,Li Q,et al. Characteristics of phosphorus fractions and phosphate diffusion fluxes of sediments in cascade reservoirs of the Huangbai River[J]. Environmental Science,2018,39(4):1608-1615.
[3] Khoshmanesh A,Hart B T,Duncan A,et al. Luxury uptake of phosphorus by sediment bacteria[J]. Water Research,2002,36(3):774-778.
[4] Jaisi D P,How Y,Stout L M,et al. Modeling of biotic and abiotic processes affecting phosphate oxygen isotope ratios in a mineral-water-biota system[J]. Water Research,2017,126:262-273.
[5] Jaisi D P,Kukkadapu R K,Stout L M,et al. Biotic and abiotic pathways of phosphorus cycling in minerals and sediments:Insights from oxygen isotope ratios in phosphate[J].Environmental Science&Technology,2011,45(15):6254-6261.
[6] Sutter M I,Demars B O L,Langan S J. River phosphorus cycling:Separating biotic and abiotic uptake during short-term changes in sewage effluent loading[J]. Water Research,2010,44(15):4425-4436.
[7] Meng J,Yao Q Z,Yu Z G. Particulate phosphorus speciation and phosphate adsorption characteristics associated with sediment grain size[J]. Ecological Engineering,2014,70:140-145.
[8] Mangadze T, Bere T, Mwedzi T. Epilithic diatom flora in contrasting land-use settings in tropical streams, Manyame Catchment,Zimbabwe[J]. Hydrobiologia,2015,753(1):163-173.
[9] Wan J J,Liu X M,Wu C X,et al. Nutrient capture and recycling by periphyton attached to modified agrowaste carriers[J]. Environmental Science and Pollution Research,2016,23(8):8035-8043.
[10] Scinto L J,Reddy K R. Biotic and abiotic uptake of phosphorus by periphyton in a subtropical freshwater wetland[J]. Aquatic Botany,2003,77(3):203-222.
[11] Mc Cormick P V,Shuford III R B E,Chimney M J. Periphyton as a potential phosphorus sink in the everglades nutrient removal project[J]. Ecological Engineering,2006,27(4):279-289.
[12] WolfeⅢJ E,Lind O T. Phosphorus uptake and turnover by periphyton in the presence of suspended clays[J]. Limnology,2010,11(1):31-37.
[13] Lu H Y,Wan J J,Li J Y,et al. Periphytic biofilm:A buffer for phosphorus precipitation and release between sediments and water[J]. Chemosphere,2016,144:2058-2064.
[14] Mc Dowell R W,Elkin K R,Kleinman P J A. Temperature and nitrogen effects on phosphorus uptake by agricultural stream-bed sediments[J]. Journal of Environmental Quality,2017,46(2):295-301.
[15] Li S S,Yuan Z W,Bi J,et al. Anthropogenic phosphorus flow analysis of Hefei City, China[J]. Science of the Total Environment,2010,408(23):5715-5722.
[16]李如忠,秦如彬,高苏蒂,等.城乡交错带典型溪流沟渠氮素污染特征及生态风险分析[J].华北水利水电大学学报(自然科学版),2017,38(3):27-34.Li R Z, Qin R B, Gao S D, et al. Investigation on the characteristics and ecological risk of nitrogen pollution in the streams across the ditches in a urban-rural fringe[J]. Journal of North China University of Water Resources and Electric Power(Natural Science Edition),2017,38(3):27-34.
[17]李如忠,阙凤翔,熊鸿斌,等.巢湖十五里河河床地貌单元沉积物硝化速率及污染特征[J].环境科学,2019,40(1):211-218.Li R Z,Que F X,Xiong H B,et al. Nitrification rates and pollution characteristics of sediments with different geomorphic features in the Shiwuli Stream, Chaohu Lake basin[J].Environmental Science,2019,40(1):211-218.
[18]李如忠,李峰,周爱佳,等.巢湖十五里河沉积物氮磷形态分布及生物有效性[J].环境科学,2012,33(5):1503-1510.Li R Z,Li F,Zhou A J,et al. Distribution and bioavailability of nitrogen and phosphorus species in the sediments from Shiwuli Stream in Lake Chaohu[J]. Environmental Science,2012,33(5):1503-1510.
[19] Lottig N R, Stanley E H. Benthic sediment influence on dissolved phosphorus concentrations in a headwater stream[J].Biogeochemistry,2007,84(3):297-309.
[20]李如忠,叶舟,高苏蒂,等.人为扰动背景下城郊溪流底质磷的生物-非生物吸收潜力分析[J].环境科学,2017,38(8):3235-3242.Li R Z,Ye Z,Gao S D,et al. Biotic and abiotic uptake of phosphorus in benthic sediments of suburban streams under intense human disturbance scenario[J]. Environmental Science,2017,38(8):3235-3242.
[21] Gibson C A, O'reilly C M. Organic matter stoichiometry influences nitrogen and phosphorus uptake in a headwater stream[J]. Freshwater Science,2012,31(2):395-407.
[22] Schade J D,Macneill K,Thomas S A,et al. The stoichiometry of nitrogen and phosphorus spiralling in heterotrophic and autotrophic streams[J]. Freshwater Biology,2011,56(3):424-436.
[23] Aldridge K T,Brookes J D,Ganf G G. Changes in abiotic and biotic phosphorus uptake across a gradient of stream condition[J]. River Research and Applications,2010,26(5):636-649.
[24] Khoshmanesh A,Hart B T,Duncan A,et al. Biotic uptake and release of phosphorus by a wetland sediment[J]. Environmental Technology,1999,20(1):85-91.
[25]裴婷婷,李如忠,高苏蒂,等.合肥城郊典型农田溪流水系统沉积物磷形态及释放风险分析[J].环境科学,2016,37(2):548-557.Pei T T,Li R Z,Gao S D,et al. Phosphorus fractions and release risk in surface sediments of an agricultural headwater stream system in Hefei Suburban,China[J]. Environmental Science,2016,37(2):548-557.
[26]丁瑶,欧阳莉莉,石清,等.特大城市河流表层沉积物磷形态分布及有效性:以成都市为例[J].环境科学,2019,40(1):219-227.Ding Y,Ouyang L L,Shi Q,et al. Distribution and bioavability of phosphorus in surface sediments in megalopolis:A case study of Chengdu[J]. Environmental Science,2019,40(1):219-227.
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