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引用本文:李震宇,朱荫湄,王进.杭州西湖沉积物的若干物理和化学性状.湖泊科学,1998,10(1):79-84. DOI:10.18307/1998.0113
Li Zhenyu,Zhu Yinmei,Wang Jin.Some Physical and Chemical Characteristics of Sediment in West Lake, Hangzhou. J. Lake Sci.1998,10(1):79-84. DOI:10.18307/1998.0113
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杭州西湖沉积物的若干物理和化学性状
李震宇1, 朱荫湄2, 王进3
1.浙江省环境监测中心站, 杭州 310012;2.浙江农业大学环境科学系, 杭州 310029;3.杭州市环境监测站, 杭州 310006
摘要:
于1995年4月—1996年1月对杭州西湖沉积物的若干物理、化学性状作了研究沉降试验表明, 沉积物中粒径在0.067－0.0029mm之间的颗粒占沉积物总量的80.8%, 0.0029mm以下的占4.3%.基本属于粉砂级范围, 沉积物受扰动后再悬浮会明显影响水体的透明度, 沉积物处于中性（pH=6.60－7.40）和低厌氧状态（Eh=－3mV至167mV）.界面溶解氧含量在1mg/L, 左右, 沉积物生物产量数（BPN=0.4836）和烧失量与全氮量之比（IG/TN=22.54－30.71）表明西湖是富营养的腐殖型湖泊。沉积物参数的主成分分析证实了西湖沉积物的沼泽来源, 并表明引水后小南湖沉积物特征与其它湖区相比已有较大差异。
关键词:  沉积物  杭州西湖  营养物质  主成分分析
DOI：10.18307/1998.0113
分类号:
基金项目:浙江省自然科学基金(294059)
Some Physical and Chemical Characteristics of Sediment in West Lake, Hangzhou
Li Zhenyu1, Zhu Yinmei2, Wang Jin3
1.Enuironmental Monitoring Center, Zhejiang Province, Hangzhou 310012;2.Department of Enuironmental Science, ZAU, hangzhou 310029;3.Hangzhou Enuronmental Monitoring Station, Hangzhou 310006
Abstract:
Some physical and chemical characteristics of sediment in West Lake.Hengzhou are dis-cussed in this artide Preeipitation trial test shows that particles with diameter between 0.067mman d 0.0029mm constitute 80.6 percent of the total sediment in West Lake, end particles with diameter below 0.0029mm constitute 4.3 percent of the total, and suspended particlas can appar-endy affect the diaphaneity of water.Sediment in West Lake is situated in a neutral an aerobic sta-tus(pH=6 60-7.40;Eh=-3mV to 167mV), Do on the interface between water and sedi-ment approximately equals lmg/L Biology production number(BPN=0.4836)and IG-totalnitrogen ratio(IG/TN=22.54-30.71)of sediment show that West Lake has a characteristic of both hyperproducfive and high humans content.Principal Component Analysis(based on sediment parameters)demonstrates that the precursor of West Lake sediment is bog, and sediment in Xiao-nan Lake is apparan tiy different together areas due to the diversion operation.
Key words:  Sediment  West Lake(Hangzhou)  nutrients  Principal Component Analysis
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