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引用本文:倪建宇,周怀阳,张美,刘小涯,王方国,何宗玉.云南抚仙湖水体营养元素分布及其对人为扰动的响应.湖泊科学,2004,16(2):134-141. DOI:10.18307/2004.0206
NI Jianyu,ZHOU Huaiyang,ZHANG Mei,LIU Xiaoya,WANG Fangguo,HE Zongyu.Nutrients Distribution in Fuxian Lake and Its Response to Human Disturbance. J. Lake Sci.2004,16(2):134-141. DOI:10.18307/2004.0206
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云南抚仙湖水体营养元素分布及其对人为扰动的响应
倪建宇1,2, 周怀阳3, 张美2, 刘小涯2, 王方国2, 何宗玉4
1.国家海洋局海底科学重点实验室, 国家海洋局第二海洋研究所, 杭州 310012;2.国家海洋局第二海洋研究所海洋生态环境监测与灾害防治中心, 杭州 310012;3.中国科学院广州地球化学研究所, 广州 510640;4.中国大洋矿产资源研究开发协会, 北京 100860
摘要:
本文分析了云南抚仙湖水体营养元素和溶解氧的分布特征,并结合大洋协会在湖区进行的多金属结核采矿系统试验,探讨了采矿系统在湖底行走而导致的人为扰动对湖区营养元素的影响。研究表明,湖区水体中的营养元素存在着明显的季节性变化,且主要受湖区气候水文条件的影响;采矿系统行走时所扰动的沉积物对水体中的营养元素,尤其是近底层水体的营养元素分布,影响明显,这主要是由于再悬浮的沉积物将原先吸附在沉积物上的营养元素再次释放到水体中而导致的,因此,在评价人类湖底采矿试验活动对湖区环境的影响时还应关注湖底沉积物对水环境的影响。
关键词:  营养元素  人为扰动  抚仙湖
DOI:10.18307/2004.0206
分类号:
基金项目:大洋矿产资源勘探开发专项基金"结核采矿系统湖试羽状流及其环境影响研究"(编号:DY95-06-08)
Nutrients Distribution in Fuxian Lake and Its Response to Human Disturbance
NI Jianyu1,2, ZHOU Huaiyang3, ZHANG Mei2, LIU Xiaoya2, WANG Fangguo2, HE Zongyu4
1.Key Lab of Submarine Geosciences of SOA, Second Institute of Oceanography SOA, Hangzhou 310012, P.R. China;2.Monitor and Protect Center of Marine Ecosystem and Environment, Second Institute of Oceanography SOA, Hangzhou 310012, P. R. China;3.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, P. R. China;4.China Ocean Mineral Resources R& D Association, Beijiang 100860, P. R. China
Abstract:
This paper discusses the vertical distribution of nutrients and dissolved oxygen in water column of Fuxian Lake, Combined with lake-test of multimetallic nodules mining system, we also discuss the influence of human disturbance to lake water quality.Based on the results, we find that the distribution of nutrients and dissolved oxygen obviously displayed seasonal variation and was controlled by climatic parameters.The re-suspended sediment caused by moving of mining system on the 1 ake-floor, will influence the distribution of nutrients, especially in near bottom water which is caused by re-releasing of nutrients from sediments previonsly adsorbed on sediment.Therefore, we should pay more attentions on sediment when we assess the influence of human activities on lake environment.
Key words:  Nutrients  human disturbance  Fuxian Lake
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