引用本文:
【打印本页】   【下载PDF全文】   View/Add Comment  Download reader   Close
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1464次   下载 1165 本文二维码信息
码上扫一扫!
分享到: 微信 更多
乌伦古湖水生植被研究
李文朝, 杨清心
中国科学院南京地理与湖泊研究所 南京 210008
摘要:
于1987年7月和1989年7,8月对乌伦古湖水生植被及其生态环境作了调查。结果表明,水位回升扭转了水生植被的退缩趋势,新生滩地上次生植物群落的形成使得Ⅳ区以北的水生植被总面积由1985年的813ha增加到1989年的4365ha,总储量由7700t增加到41750t。芦苇占现有植被区面积的81%和总储量的68%。现有水生植被正处在迅速演变之中,随着植被的发育,植被总面积将会减小到3500ha左右,但总储量将会逐年增加。植被现有生产力约58955t,对渔业和环境十分重要,应加强对其开发利用。
关键词:  乌伦古湖  水生植被  演替动态  水位
DOI:
分类号:
基金项目:新疆阿尔泰地区水电处委托研究项目
STUDY ON AQUATIC VEGETATION IN WULUNGU LAKE, XINJIANG
Li Wenzhao, Yang Qingxin
Nanjing Institute of Geography and Limnology, Acudemia Sinica, Nanjing 210008
Abstract:
Wulungu Lake, a semi-salt water lake in the northwestern part of Xinjiang, has a surface area of 81 800 ha and only less than 7% of it is covered by aquatic vegetation. Surrounded by arid desert, Wulungu Lake and its aquatic vegetation are of great importance to fishery and to the environment.

According to results of investigations made from 1978 - 1985, the water level of Wulungu Lake had been dropping. lt was not until the end of 1987 when the Second Erdis River Diversion Project to replenish the lake water, was implemented that the water level of the lake began to be restored rapidly.

In July, 1987 and in July to August, 1989 the detailed investigation on the effects of water level changes on the aquatic vegetation and its environment, Was carried out. Results revealed that (1) the restoration of water level resulted in an increase in the aquatic vegetation coverage from 815 ha in 1985 to 4365 ha in 1989, and an increase in the total standing biomass from 7 700t to 41 750; of the aquatic vegetation; (2) among 53 species of vascular plants in the lake, reed (Phragmites communis Trin.) which was the most dominant species made up 68% of the total standing biomass and covered 81% of the total area of the aquatic vegetation. Potamogeton pectinatus and P. perfoliatus, the subdominant species, made up 11% and 8% of the total standing biomass respectively; (3) the vegetation was still in a process of rapid succession because the deeply-inundated reed was disappearing and the newly-formed plant communities in the shallow areas were developing. Under stable water level, the total area of aquatic vegetation would possibly decrease to about 3500 ha and the total standing biomass would possibly increase steadily year by year; (4) with a productivity of about 58 955t per year, it is apparent that the aquatic vegetation played an important role in the primary production and fishery of the lake. If if had not ben properly used the lake water would be organically polluted especially in area IV. Thus, periodic harvest is needed to remove products of aquatic plant from the lake.

Key words:  Wulungu Lake, Aquatic vegetation, Succession syndynamic, Water level
Copyright ©  Editorial Office for Oceanologia et Limnologia Sinica    Copyright©2008 All Rights Reserved
Supervised by: China Association for Science and Technology   Sponsored by: Chinese Society for Oceanology and Limnology, Institute of Oceanology and Limnology, CAS.
Address: 7 Nanhai Road, Qingdao, China.    Postcode: 266071    Tel: 0532-82898753  E-mail: liuxiujuan@qdio.ac.cn  
Technical support: Beijing E-Tiller Co.,Ltd.