江苏滆湖北部湖区综合整治后夏季水体光环境研究  

Optical properties after multi-treatments in northern part of Lake Gehu,Jiangsu Province in summer

作　　者：何尚卫 李勇[2,3] 潘继征[1] 高亚[1,2,3] 吴晓东[1,4] 

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]苏州科技学院环境科学与工程学院,苏州215009 [3]江苏省环境科学与工程重点实验室,苏州215009 [4]中国科学院大学,北京100049

出　　处：《湖泊科学》2015年第2期311-318,共8页Journal of Lake Sciences

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07101-007-01)资助

摘　　要：选取滆湖为研究对象,探究这一开放水体的北部湖区水体光环境是否有利于沉水植物的恢复.通过对整治后的2013年夏季(7月和8月)滆湖北部整治湖区(A湖区)和临近未整治区(B湖区)水体光环境的监测,发现在夏季7月A湖区透明度(SD)平均达39 cm,显著高于B湖区,同时7月A湖区SD较8月高.夏季悬浮物和叶绿素a(Chl.a)是影响水体光环境的主要因子.7月两个湖区无机悬浮物的浓度差异是造成SD和Kd差异的原因;7月与8月A湖区Chl.a的浓度差异,是造成A湖区两个月份水体光环境差异的主要因素.与整治时(2009年)相比,7月水体光环境显著提高.整治后A湖区水深的显著增加,在一定程度上不利于沉水植物的恢复.In order to investigate whether the optical properties were benefit for the restoration of submerged plants in an open water in the northern of a shallow lake, Lake Geha, we measured the influence factors of the underwater light environment in the areas which were with and/or without muhi-treatments（ area A and area B） in July and August, 2013. The results showed that the aver- age secchi disk depth（SD） was 39 cm in July in area A, which was much higher than that in area B. The SD in July was also higher than that in August in area A. Suspended solids and chlorophyll-a （ Chl. a） were the main factors of optical properties in summer. The significant difference of SD and Kd between the two areas in July was caused by the difference of inorganic suspended solids in two areas. The optical properties in area A also had a significant difference between July and August in 2013, which was caused by the remarkable differences of Chl. a concentration in the two months. The underwater light environment of area A has im- proved significantly in July, compared with 2009 when it was under treatment. It will not benefit the restoration of submerged plants in area A as the depth has increased a lot.

关 键 词：滆湖 综合整治 光 沉水植物 

分 类 号：X524[环境科学与工程—环境工程]