| 引用本文: | 潘红玺,王云飞,董云生.洱海富营养化影响因素分析.湖泊科学,1999,11(2):184-188. DOI:10.18307/1999.0217 |
| PAN Hong-xi,WANG Yun-fei,Dong Yun-sheng.Factor Analysis of Eutrophication in Erhai Lake. J. Lake Sci.1999,11(2):184-188. DOI:10.18307/1999.0217 |
|
| 摘要: |
| 水质富营养化评价表明,洱海现属中营养水平.根据全年平均状态下的某些单项指标评分或近年来某些时段的全湖营养类型综合评分,将洱海评价为从中营养状态向富营养状态过渡型的湖泊可能更为适宜与历史资料相比,80年代至今富营养化进程较快,主要营养盐有递增趋势其主要原因为,流域面源污染、湖水长期低水位运行、不适宜的资源开发等,从而导致洱海向富营养湖泊发展的趋势. |
| 关键词: 洱海 富营养化 影响因素 |
| DOI：10.18307/1999.0217 |
| 分类号: |
| 基金项目:中科院湖沼专项“湖沼系统影响与对策研究”资助项目 |
|
| Factor Analysis of Eutrophication in Erhai Lake |
|
PAN Hong-xi1, WANG Yun-fei1, Dong Yun-sheng2
|
|
1.Nangjing Institute of Geography and Limnology, Chinese Academy of Sciences, Naming 210008;2.Erhai Administration Bureau of Yunnan Province, Dell 671000
|
| Abstract: |
| Analysis of water quality and evaluations show that the Erhai Lake is in a mesotrophic state. According to eval-uations on some annual average state and on all lake nutrition types at some period of recent years, it is feasible that Erhai Lake now is assessed to the transition type between mesotrophic and eutrophic state. Compared with historical data, from the 1980s the pace of eutrophication was a little fast and the nutrients elements concentration increased gradually. Factors that result the changes are: (1) increasing of contaminants within the catchment; (2) lake being at low water level for a long time, and (3) unreasonable exploring of natural resources. |
| Key words: Erhai Lake eutrophication factor |
