| 滇池水质时空特征及与流域人类活动的关系 |
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| 引用本文： | 孙金华,曹晓峰,黄艺.滇池水质时空特征及与流域人类活动的关系[J].湖泊科学,2012,24(3):347-354. |
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| 作者姓名： | 孙金华 曹晓峰 黄艺 |
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| 作者单位： | 1. 北京大学环境科学与工程学院,北京,100871
2. 西安科技大学测绘科学与技术学院,西安,710054 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项项目 |
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| 摘 要： | 湖泊水质与人类活动有着密切的关系,人类活动是湖泊水质恶化的驱动因素.本文在分析1999-2009年滇池水质时空变化特征的基础上,以受人类干扰的土地比例、城镇与湖岸的距离、人口密度、单位土地GDP作为陆地人类活动压力的表征指标,通过对比分析研究滇池水质与人类活动的关系.结果表明:滇池的草海部分和外海部分水质差异显著,草海水质整体较差且呈逐年下降趋势,外海NH3-N、TN、TP浓度明显低于草海,且随时间的变化较小,外海CODMn略低于草海,年际变化与草海相似.城镇用地比例、人口密度、单位土地GDP是草海与外海水质相差悬殊的主导因子;草海汇水区城镇扩张、人口和GDP产值的飞速增长导致草海污染物浓度大幅增加,而河流截污工程、农业农村面源污染的有效控制使外海NH3-N、TN、TP上升不明显甚至有下降趋势.
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| 关 键 词： | 滇池 水质时空特征 人类活动 土地利用 人口密度 GDP |
| 收稿时间： | 2011/6/25 0:00:00 |
| 修稿时间： | 2011/12/13 0:00:00 |
Relationships between spatial-temporal trends of water quality and the human activities in Lake Dianchi |
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| SUN Jinhu,CAO Xiaofeng and HUANG Yi.Relationships between spatial-temporal trends of water quality and the human activities in Lake Dianchi[J].Journal of Lake Science,2012,24(3):347-354. |
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| Authors: | SUN Jinhu CAO Xiaofeng and HUANG Yi |
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| Institution: | 1(1: College of Environmental Sciences and Engineering,Peking University,Beijing 100871,P.R.China)(2: College of Geomatics,Xi’an University of Science and Technology,Xi’an 710054,P.R.China) |
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| Abstract: | Lake water quality is closely related with human activities,and human activities are the driving factors in lake water quality aggravating.Analyzing the spatial-temporal trend of Lake Dianchi in recent ten years,taking proportion of interrupted land-use by human beings,population density,and GDP per square kilometer as human activity indicators,this paper investigated the relationships between lake water quality and human activities in Lake Dianchi watershed.Firstly,as Lake Dianchi is divided into two parts,Lake Caohai is greatly different from Lake Waihai in terms of water quality.Lake Caohai was polluted seriously and getting worse year by year,while the concentrations of NH3-N,TN and TP in Lake Waihai were much lower than those in Lake Caohai,and changed slightly in past ten years.The concentration level of CODMn in Lake Waihai and its changing situation in past ten years was similar to those of Lake Caohai.Secondly,town construction landuse,population density,and GDP per square kilometer were leading factors in causing the differences between Lake Caohai and Lake Waihai.Meanwhile,city and town expanding,and population and GDP growing led to Lake Caohai polluted seriously,while Lake Waihai was less polluted or sometimes,even better(such as TP),perhaps because of non-point pollution control from agriculture and rural area,or the pollution-cutting-engineering at some inflow rivers’ watershed. |
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| Keywords: | Lake Dianchi spatial-temporal trends of water quality human activities land-use population density GDP |
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