|
|||||
|
|
| 洱海生态环境恶化及综合治理对策研究 | |
| 引用本文： | 杜宝汉.洱海生态环境恶化及综合治理对策研究[J].海洋与湖沼,1994,25(3):312-318. |
| 作者姓名： | 杜宝汉 |
| 作者单位： | 大理州环境科学研究所!云南，671000 |
| 摘 要： | 由于７０年代中期西洱河电站建成发电引起洱海水位下降，加之流域植被破坏，水土流失及酷渔监捕，不合理引种等原因，使洱海生态环境发生了变迁。湖泊面积缩小５％左右，容积减少１４％左右；浮游动植物，底栖动物的种群结构，数量发生明显变化；土著鱼种类和数量急剧减少；水在维管束植物覆盖面积达２７％，生物总量达５６．３万ｔ。为此提出保持水位植树造林，控制点，面源污染，适度捕捞及加强管理等综合治理对策。 |
| 关 键 词： | 洱海 生态环境 水生植被 污染 治理 |
| 收稿时间： | 1991/10/3 0:00:00 |
| 修稿时间： | 1993/11/4 0:00:00 |
STUDY ON THE DETERIORATION OF ECO-ENVIRONMENT OF ERHAI LAKE AND COUNTERMEASURES FOR COMPREHENSIVE TREATMENT |
|
| Du Baohan.STUDY ON THE DETERIORATION OF ECO-ENVIRONMENT OF ERHAI LAKE AND COUNTERMEASURES FOR COMPREHENSIVE TREATMENT[J].Oceanologia Et Limnologia Sinica,1994,25(3):312-318. | |
| Authors: | Du Baohan |
| Institution: | Dali Prefectural Research Institute of Environmental Science, Yunnan 671000 |
| Abstract: | Erhai Like situated at the west of Yunnan (100°05' - 100°17' E, 25°36' - 25°58' N), has a catchment area of 2 565 km2, surface area of 250 km2, mean depth of 10.5 m and maximum depth of 20.5 m. The main ecological environmental problems of Erhai Lake are: (1) decrease of water level and water resources, (2) increase of areal coverage and biomass of aquation vegetation, (3) aboriginal fish slowly depleted, (4) overfishing, (5) destruction of the washed forest, soil erosion, (6) loading of nitrogen and phosphorus due to the increase of agricultural production around Erhai Lake, (7) pollution of the waves. This paper presents some countermeasures to solve the problems: (1) Control water level. (2) Afforestation in the watershed to prevant soil erosion. (3) Control overgrowth of aquatic plants in the lake. (4) Implement and perfect the administrative system and pass protective legislation for Erhai Lake. |
| Keywords: | Erhai Lake Eco-environment Aquation vegetation |
| 本文献已被 CNKI 维普 等数据库收录！ | |
| 点击此处可从《海洋与湖沼》浏览原始摘要信息 | |
| 点击此处可从《海洋与湖沼》下载免费的PDF全文 | |