湖泊营养物参照状态建立方法研究  

Study on establishing lake reference condition for nutrient

作　　者：陈奇[1,2] 霍守亮[2] 席北斗[2] 昝逢宇[2] 李秀金[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]中国环境科学研究院,北京100012

出　　处：《生态环境学报》2010年第3期544-549,共6页Ecology and Environmental Sciences

基　　金：国家"水体污染控制与治理"科技重大专项(2009ZX07106-001);国家重点基础研究发展计划项目(2008CB418206)

摘　　要：建立生态分区内各类型湖泊营养物的参照状态是营养物基准制定过程中最为核心的内容之一。在系统分析和评价国外确定湖泊营养物参照状态的若干种方法,包括参照湖泊法、湖泊群体分布法、三分法、回归分析等几种统计学方法以及模型推断和古湖沼学重建方法后,文章根据总磷(total phosphorus,TP)、总氮(total nitrogen,TN)、叶绿素a(chlorophyll a,Chl-a)和塞氏透明度(Secci depth)等四项指标的历史监测数据,应用若干统计学方法建立了巢湖的营养物基准参照状态。通过互相之间的比较分析以及长江中下游湖区古湖沼学重建数据的验证,推荐采用湖泊群体分布法5%点位对应的值作为巢湖营养物基准的参照状态。因此,巢湖营养物参照状态阈值范围为总磷0.023～0.27mg·L-1,总氮0.62～0.63mg·L-1,叶绿素a0.65～0.67mg·m-3,塞氏透明度0.65～0.72m。Lake nutrient reference condition Establishment in an ecoregion is a critical part in nutrient criteria development. Several methods of reference condition establishment have been reviewed as statistical methods, including reference lake approach, lake population distribution approach, trisection approach, regression approach, and model extrapolation and paleolimnological reconstruction. In this paper, based on the historical monitoring data of total phosphorus, total nitrogen, chlorophyll a and Secci depth, statistical method was applied to establish the nutrient reference condition of Chaohu Lake. Through comparative analysis and the validation of paleolimnological reconstruction data about the middle and lower reaches of Changjiang River, 5th percentile of lake population distribution was recommended as reference conditions. Thus, the threshold rang of Chaohu Lake showed that total phosphorus is 0.023-0.27 mg·L^-1, total nitrogen is 0.62-0.63 mg·L^-1, chlorophyll a is 0.65-0.67 mg·m^-3, Secci depth is 0.65-0.72 m.

关 键 词：湖泊营养物基准 参照状态 统计学方法 湖泊群体分布法 古湖沼学重建 

分 类 号：X524[环境科学与工程—环境工程]