太湖氮、磷自净能力的实验与模型模拟  

Experiment and Model Simulation of Self-Purification Capacity of Nitrogen and Phosphorus in Lake Taihu

作　　者：韩涛[1] 翟淑华[2] 胡维平[1] 张红举[2,3] 李钦钦[3] 

机构地区：[1]中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,南京210008 [2]水利部太湖流域管理局水资源保护局,上海200434 [3]中国科学院大学,北京100049

出　　处：《环境科学》2013年第10期3862-3871,共10页Environmental Science

基　　金：水利部公益性行业科研专项(201101025)

摘　　要：于2011年9月对太湖竺山湖开展了1次湖区实验,根据质量平衡原理,通过进出竺山湖湖区河道以及竺山湖湾心、湾口水量、水质测量,弄清了竺山湖湖区营养物质进出以及消纳规律,从而为完善水量-水质模型参数提供依据,也为进一步研究太湖水体自净能力提供了基础资料.采用EcoTaihu模型模拟了太湖营养物质的循环以及自净能力,根据竺山湖湖区实测结果对模型进行了验证,实验得到竺山湖湖区总氮年自净能力为1 979 t,总磷年自净能力为119 t,通过EcoTaihu模型计算得到竺山湖总氮年自净能力为1 911 t,总磷年自净能力为116 t,实测数据和模型较为吻合.模型计算结果表明,2006、2008、2010年太湖氮元素自净能力分别为4.00、4.27、4.11万t.2006、2008、2010年太湖磷元素自净能力分别为1 566、1 798、1 712 t.A field experiment was carried out in Zhushanhu in September, 2011. On the basis of mass balance, nutrients flow in and out of Zhushanhu and their Digestion-absorption law was illustrated through water quantity-water quality observation of bay heart, bay mouth and rivers around Zhushanhu, which provides basic data for the further research on the self-purification capacity of Lake Taihu. The EcoTaihu model was adopted to simulate the nutrients flow and their self-purification capacity of Lake Taihu. The simulated annual self-purification capacity of total nitrogen and total phosphorus of Zhushanhu was 1 911 t and 116 t, respectively, whereas the observed annual self-purification capacity of total nitrogen and total phosphorus of Zhushanhu was 1 979 t and 119 t, respectively. The model was validated by the observation data. The simulated result showed that the self-purification capacity of total nitrogen of Lake Taihu in year 2006, 2008 and 2010 was 4.00 × 10^4 t, 4.27 × 10^4 t and 4. 11× 10^4 t, respectively, whereas the self-purification capacity of total hosohorus of Lake Taihu in vear 2006. 2008 and 2010 was 1.56 × 10^3 t 1.80×103 t and 1.71 × 10^3 t. resnectivelv.

关 键 词：自净能力 EcoTaihu模型 太湖 营养物质循环 富营养化 

分 类 号：X143[环境科学与工程—环境科学] X524