摘要
在富营养化湖泊开展了生物化学湖泊模型(BIOLA)对不同富营养化管理行动的响应研究。此项研究中的管理行动包括减少营养物质载荷量、沉积物控制、生物控制。以及使用除草剂等。该模型用于模拟上世纪90年代湖泊中营养物和生物量浓度。另外,对同一时期的管理情景也进行了模拟。通过对几个生态参数校准,来更好地模拟所选定湖泊的行为,但对磷酸盐的模拟仍存在一些问题。这表明需要对模型做进一步的开发。在营养物质载荷量减少和通过降低食草鱼类的数量进行生物控制情景下,该湖泊出现了良好的发展态势。同时减少氮和磷的载荷量比仅仅减少其中一种成分的载荷量对湖泊水质有更大的影响。
The response of a biogeochemical lake model (BIOLA) to different eutrophication management actions has been studied in a eutrophic lake.Management actions included in the study were nutrient load reduction,sediment manipulation,biomanipulation,and herbicide application.The model was used to simulate nutrient and biomass concentrations in the lake auring the 1990s.During the same period,management scenarios were also simulated.Several ecological parameters were calibrated to better simulate the behavior of the chosen lake,but there were still some difficulties with phosphate.This indicated that further model development is necessary.The most favorable development within the lake was found for scenarios with nutrient load reduction and biomanipulation through planktivorous fish reduction.Reducing both the nitrogen and phosphorus loads had a greater effect on the lake's water quality than simply reducing just one of the nutrients.
