控制菹草生长的设计

Design a Growth Control of Potamogeton Crispus

指出了菹草是沉水性多年生草本植物,常用于湖泊与河流水质的改善。近年来,由于水体富营养化程度日趋严重,菹草生长得不到有效的控制,菹草开始过量增殖,对环境和水生生态系统产生了不可忽视的影响。在襄阳、西安等地,菹草春末夏初泛滥已经严重影响城市形象,对其进行控制是非常必要的。讨论了采用固定床和生态位理论控制菹草的生长方案。固定床通过限制菹草的生长位置和定期的收割装置的运行控制其生长和蔓延;生态位模型主要是通过研究环境因子对菹草生长的影响,构建群落以增加物种的多样性对菹草的生长环境进行限制,从而稳定其生长空间。

Potamogeton crispus is a kind of perennial submerged herb, which is usually used to improve the water quality. In recent years, as the trend of eutrophication is more serious and the growth control of the herb is ineffective, potamogeton crispus starts to excessively multiply in rivers and lakes, which exerts a profound and inconvenient impact on the aquatic ecosystem. In the lakes surrounding Xiangyang and Xi＇an city, the rampancy of the potamogeton crispus in the late spring and the early summer has had an awful influence on the image of the cities. Th＇erefore, it is of great necessity to control the spread and multiplication of the submerged herb. The design in this article is intended to control the growth and the spread of potamogeton crispus by the restriction of the fixed bed on its growing position and the niche theory. The fixed bed control the growth and spread of the herb through the restriction of its growing position and the regular operation of reaping apparatus; the ecological niche model is applied to control the herb through the study on how the environmental factors affecting the growth of the herb and the construction of ecological communities to restrict the living space of potamogeton crispus.