长江流域资源与环境 >> 2005, Vol. 14 >> Issue (6): 744-749.

• 生态环境 • 上一篇    下一篇

杭州西湖水体光学状况及影响因子分析

张运林,秦伯强,朱广伟,黄群芳,谷孝鸿, 龚志军, 虞左明, 陈伟民   

  • 收稿日期:2004-11-15 修回日期:2005-02-11 出版日期:2005-11-20
  • 通讯作者: 张运林

THE LIGHT CONDITION AND AFFECT FACTORS IN HANGZHOU WEST LAKE

ZHANG Yun-lin,QIN Bo-qiang,ZHU Guang-wei,HUANG Qun-fang, GU Xiao-hong,GONG Zhi-jun,YU Zuo-ming,CHEN Wei-min   

  • Received:2004-11-15 Revised:2005-02-11 Online:2005-11-20
  • Contact: ZHANG Yun-lin

摘要: 2004年10月8日在杭州西湖6个不同湖区共布设10个采样点进行水下光场的测定,并采集水样分析悬浮物、叶绿素a、有色可溶性有机物(CDOM)浓度。结果表明,3类主要光衰减物质总悬浮物、叶绿素a和DOC的浓度分别为3.68~42.76 mg/L、4.64~85.95 μg/L、5.19~9.22 mg/L;CDOM在440 nm波长处吸收系数为0.30~1.46 m-1;PAR衰减系数在1.13~6.04 m-1间变化,均值为4.00±1.69 m-1;对应的真光层深度为0.76~4.08 m,均值为1.54±1.11 m;仅南湖和茅家埠两个湖区真光层深度大于水深,其他湖区由于水深远大于真光层深度,在现有的光照条件和水位下要恢复沉水植物困难较大。对PAR衰减系数、真光层深度、透明度等表观光学参数与主要水色因子进行相关分析发现,水体中浮游藻类和有机颗粒物对西湖水体光学性质影响最大。

关键词: 杭州西湖, 衰减系数, 真光层深度, 叶绿素a, 总悬浮物

Abstract: The behavior of light in water, particularly its attenuation with depth, has important ecological and water quality implications. The underwater light climate ultimately determines the depth distribution, abundance and primary production of phytoplankton and macrophyte. Light attenuation is regulated by the composition and concentration of various attenuating constituents, which include water itself, gelbstoff, phytoplankton and tripton. Here the vertical attenuation coefficients of downward visible irradiance were measured in 10 different stations in Hangzhou West Lake using 192SA and 193SA light sensors and a SR9910PC scanning spectroradiometer at the water surface and at different depths. Water chemistry variables such as total suspended solids (TSS), organic suspended solids (OSS), inorganic suspended solids (ISS), chlorophylla (Chla), dissolved organic carbon (DOC), absorbance of chromophoric dissolved organic matter (a) were measured to determine the relative contribution of dissolved and particulate components in explaining the variation in diffuse attenuation coefficients.The attenuation properties of Hangzhou West Lake vary greatly though it is a small shallow lake. The main attenuators such as TSS, Chla and DOC vary from 3.68 to 42.76 mg/L, 4.64 to 85.95 μg/L, 5.19 to 9.22 mg/L, respectively. CDOM absorption coefficients at 440 nm are in the range of 0.30~1.46 m-1. PAR attenuation coefficients range from 1.13 to 6.04 m-1 with an average value of 4.00±1.69 m-1, the corresponding euphotic depth ranging from 0.76 to 4.08 m with an average value of 1.54±1.11 m. Only small south lake and Maojiabu lake regions the euphotic depths are larger than water depths. Therefore, the restoration of macrophyte is difficult under present underwater light condition and water level. Based on regression analysis between PAR attenuation coefficients, euphotic depths, secci disc and main light attenuators, phytoplankton and organic suspended solid play a main role in regulating the attenuation of light.

Key words: Hangzhou West Lake, diffuse attenuation coefficient, euphotic depth, chlorophylla, total suspended solids

[1] 罗固源, 郑剑锋, 许晓毅, 曹佳, 舒为群. 次级河流回水区叶绿素a与影响因子的多元分析——以临江河为例[J]. 长江流域资源与环境, 2009, 18(10): 964-.
[2] 宋玲玲,仇雁翎,张洪恩,赵建夫. 淀山湖叶绿素a的高光谱遥感监测研究[J]. 长江流域资源与环境, 2007, 16(1): 48-51.
[3] 李崇明,黄真理,张晟,常剑波. 三峡水库藻类“水华”预测[J]. 长江流域资源与环境, 2007, 16(1): 1-6.
[4] 张运林,秦伯强,陈伟民,罗潋葱,. 太湖水体中悬浮物研究[J]. 长江流域资源与环境, 2004, 13(3): 266-271.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 陈振杰, 李满春, 刘永学. 基于GIS的桐庐县农村居民点空间格局研究[J]. 长江流域资源与环境, 2008, 17(2): 180 .
[2] 钟福生,邓学建,颜亨梅,王焰新,彭波涌, 彭平波. 西洞庭湖湿地鸟类群落组成、多样性及保护对策[J]. 长江流域资源与环境, 2008, 17(3): 351 .
[3] 曾立雄|肖文发|黄志霖|雷静品|王鹏程|谭本旺. 三峡库区不同退耕还林模式水土流失特征及其影响因子[J]. 长江流域资源与环境, 2014, 23(01): 146 .
[4] 李巍, 王祖静. 基于路网结构的甘南藏族自治州旅游资源可达性评价[J]. 长江流域资源与环境, 2014, 23(05): 644 .
[5] 郭泉恩,钟业喜,熊文平. 鄱阳湖生态经济区交通格局演变及区域效应研究[J]. 长江流域资源与环境, 2014, 23(09): 1194 .
[6] 谢卫明,田欣,郭磊城,何青. 长江口徐六泾水沙过程对流域的响应研究[J]. 长江流域资源与环境, 2014, 23(09): 1251 .
[7] 赵建平, 赵洋甬, 胡建林. 基于受体作用理论的类雌激素效应测试方法[J]. 长江流域资源与环境, 2015, 24(11): 1953 -1960 .
[8] 闫东升, 杨槿, 陈雯. 失地农民生活满意度测度及影响因素研究——以南京市仙林新村为例[J]. 长江流域资源与环境, 2018, 27(07): 1450 .
[9] 董鹏宇, 赵华甫, . 耕地多功能权衡与协同关系研究——以上海市青浦区为例[J]. 长江流域资源与环境, 2019, 28(02): 368 -375 .
[10] 谭盼, 白江迪, 陈文汇, 刘俊昌. 野生动物冲突中个体特征、事件严重性及救援效果对心理创伤的影响研究[J]. 长江流域资源与环境, 2019, 28(07): 1643 -1651 .