陈桥湿地土壤和沉积物碳、氮、磷分布及沉积物污染评价  

Distribution of Carbon,Nitrogen and Phosphorus in Soil and Sediments of the Chenqiao Wetland and Pollution Evaluation of Sediments

作　　者：周会萍 周君丽 蔡祖国 黄艳丽 庄静静 ZHOU Huiping;ZHOU Junli;CAI Zuguo;HUANG Yanli;ZHUANG Jingjing(School of Civil Engineering and Architecture,Xinxiang University,Xinxiang 453003,China;School of Horticulture and Landscape Architecture,Henan Institute of Science and Technology,Xinxiang 453003,China)

机构地区：[1]新乡学院土木工程与建筑学院,河南新乡453003 [2]河南科技学院园艺园林学院,河南新乡453003

出　　处：《云南农业大学学报（自然科学版）》2024年第1期159-167,共9页Journal of Yunnan Agricultural University:Natural Science

基　　金：河南省科技攻关项目(222102320119);河南省高等学校重点科研项目(22B180014)。

摘　　要：【目的】探究陈桥湿地土壤和沉积物养分状况及沉积物污染水平。【方法】分别对陈桥湿地非水体(泥滩区)土壤和水体沉积物进行采样,分析样品中总氮(total nitrogen,TN)、总磷(total phosphorus,TP)、有机质(organic matter,OM)、总无机态氮(total inorganic nitrogen,TIN)、铵态氮(NH_(4)^(+))、硝态氮(NO_(3)^(−))和亚硝态氮(NO_(2)^(−))含量及化学计量特征,并通过综合污染指数法和有机污染指数法评价沉积物污染水平。【结果】(1)沉积物OM、TN、TP和TIN含量远高于土壤;(2)土壤C/N、C/P和N/P均值分别为25.31、16.39和0.66;沉积物C/N均值为18.08,C/P和N/P样点间差异大;(3)各样点沉积物TN、TP和OM均值分别为(1723.35±1562.50)mg/kg、(754.28±98.94)mg/kg和(5.00±4.26)%,综合污染指数和有机污染指数均为轻度或重度污染水平;(4)TP与OM、各氮素指标无显著相关性(P>0.05),TN与OM呈显著正相关(P<0.05)。【结论】陈桥湿地水体沉积物OM和氮磷含量高于非水体土壤,沉积物污染水平较高,水体生态环境受氮素影响较大,需加强管理,控制水体内源负荷。[Purpose]To explore the nutrient status of soil and sediments and the pollution level of sediment in Chenqiao wetland.[Methods]The non-water soil(mudflat area)and water sediment of Chenqiao wetland were collected respectively,which were analyzed for the content and stoichiometric characteristics of total nitrogen(TN),total phosphorus(TP),organic matter(OM),total inorganic nitrogen(TIN),ammonium nitrogen(NH_(4)^(+)),nitrate nitrogen(NO_(3)^(−))and nitrite nitrogen(NO_(2)^(−)).The comprehensive pollution index method and organic pollution index method were used to evaluate the pollution level of sediments.[Results]1)The contents of OM,TN,TP and TIN in sediments were much higher than those in soil.2)The average values of C/N,C/P and N/P in soil were 25.31,16.39 and 0.66,respectively;the average value of C/N in sediments was 18.08,and there were great differences in C/P and N/P between sample points.3)The average values of TN,TP,OM of sediment samples were(1723.35±1562.50)mg/kg,(754.28±98.94)mg/kg and(5.00±4.26)%,respectively.Both the comprehensive pollution index and the organic pollution index were slight or severe pollution level.4)There was no correlation between TP and OM and various nitrogen indexes in study area(P>0.05),but there was a significant positive correlation between TN and OM(P<0.05).[Conclusion]The contents of OM,nitrogen and phosphorus in the sediments of Chenqiao wetland are higher than those of soil,and the pollution level is higher in water sediment.The ecological environment of water is greatly affected by nitrogen.In the future,it is necessary to strengthen management and control the endogenous load of water.

关 键 词：陈桥湿地 土壤 沉积物 碳、氮、磷 污染评价 

分 类 号：S151.95[农业科学—土壤学]