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首页> 外文期刊>Ecological Modelling >A system-dynamic model on the competitive growth between Potamogeton malaianus Miq. and Spirogyra sp.
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A system-dynamic model on the competitive growth between Potamogeton malaianus Miq. and Spirogyra sp.

机译：一个系统动力学模型，用于研究Palamogeton malaianus Miq之间的竞争性增长。和螺旋藻

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摘要

A system-dynamic model has been built to evaluate the competition between submerged macrophytes Potamogeton malaianus Miq. (PM) and filamentous green algae Spirogyra sp. (SP). The data background is based on a spring-summer and an autumn-winter experiment carried out in artificial field ponds. The experiments had the aim to acquire a knowledge base necessary to a successful restoration of submerged macrophyte vegetation in Lake Taihu, China by use of P. malaianus Miq. The model mainly focuses on variations in water volume; biomass dynamics of P. malaianus Miq., Spirogyra sp. and zoobenthos; nutrients cycling between water column, P. malaianus Miq., Spirogyra sp., zoobenthos, detritus and sediment. Sixteen state variables are included in the model: biomass of P. malaianus Miq., Spirogyra sp. and zoobenthos; nitrogen in sediments, detritus, in P. malaianus Nil., in Spirogyra sp. and zoobenthos; total dissolved nitrogen; phosphorus in sediments, detritus, in P. malaianus Miq., in Spirogyra sp. and in zoobenthos; total dissolved phosphorus, and water volume of the experiment pond. The calibration and validation of the model show a good accordance with the results of the spring-summer experiment and the autumn-winter experiment. Model outputs show that higher temperature, shading effect and improper nutrients would result in a decrease in biomass of P. malaianus Miq. The most crucial factor having a negative effect on the growth of P. malaianus Miq. is Spirogyra sp., which entangles the stems and leaves of P. malaianus Miq. In order to successfully restore the vegetation of P. malaianus Miq., Spirogyra sp. should be suppressed in the early phase.
机译：建立了系统动力学模型来评估淹没大型植物Potamogeton malaianus Miq之间的竞争。 （PM）和丝状绿藻Spirogyra sp。 （SP）。数据背景基于在人工田间池塘中进行的春夏和秋冬实验。这些实验旨在获得必要的知识基础，以利用P. malaianus Miq成功地恢复中国太湖淹没的大型植物。该模型主要关注水量的变化。螺旋藻（Spirogyra sp。）和底栖动物;营养物质在水柱，疟原虫，螺旋藻，底栖动物，碎屑和沉积物之间循环。该模型中包含16个状态变量：P. malaianus Miq。，Spirogyra sp。的生物量。和底栖动物;沉积物中的碎屑中的氮，P。malaianus Nil。，Spirogyra sp。和底栖动物;总溶解氮;螺旋藻sp。malaianus Miq。中沉积物，碎屑中的磷和在底栖动物中;总溶解磷和实验池的水量。该模型的校准和验证与春季夏季实验和秋季冬季实验的结果非常吻合。模型输出结果表明，较高的温度，遮光作用和营养成分不当会导致疟原虫生物量的减少。对疟原虫生长的负面影响最关键的因素。是Spirogyra sp。，缠绕了P. malaianus Miq的茎和叶。为了成功恢复P. malaianus Miq。，Spirogyra sp。的植被。应该在早期被抑制。

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