摘要
在原位试验的基础上,建立浮床生态场模型。模拟结果表明,浮床生态势值在"场源"处最大,从浮床"场源"向周围水平方向以及向水下垂直方向,随着距离的增加生态势逐渐下降。同时,浮床植物的生物量对生态场效应有显著影响,浮床植物生长越旺盛、生物量越大,生态场效应越强。1m×1m的浮床,当植物生物量为39.40kg·m-2时,浮床系统可最远影响到距离浮床1.86m范围内的水体,并对浮床周围10.90m2范围内的水体产生作用。该模型可以模拟浮床生态场的空间分布特征及其随植物生长发育的动态变化过程,并可通过模型定量化反映浮床系统在其作用范围内对任意一点的作用强度及其综合影响,该模型的构建将为生态浮床的野外应用提供理论依据。
A model about the ecological field of floating bed system was constructed based on in situ experiment.The simulation results indicated that the ecological potential of floating bed system was the highest in ‘field source’,and decreased gradually with increasing horizontal and vertical distances to the ‘field source’.Plant kyegrass （Lolium multiflorum） biomass in the floating bed system had notable effects on the ecological potential.The more vigorous the plant grew,the higher the ecological potential was.In a 1 m × 1 m ecological floating bed and when the plant biomass was 39.40 kg·m-2,the maximum affecting distance of ecological field was 1.86 m,and the maximum affecting area was 10.90 m2.This model could simulate the spatial distribution characteristics of the ecological field of floating bed system,reflect the dynamic changes of plant growth with the spatial distribution of ecological field,and quantify the affecting degree of the floating bed system to the water quality at any point within the affecting scope of the bed system.The construction of this model could provide theoretical basis for the application of ecological floating bed in treating polluted water.
出处
《生态学杂志》
CAS
CSCD
北大核心
2011年第6期1287-1294,共8页
Chinese Journal of Ecology
基金
国家自然科学基金项目(40873057)
江苏省科技厅科技创新与成果转化(重大科技支撑与自主创新)专项(BE2008677)
中国博士后基金项目(20100481095)
江苏省高校自然科学基金面上项目(10KJB610001)
江苏大学校基金项目(09JDG050)资助
关键词
生态浮床
生态场
生态势
ecological floating bed system
ecological field
ecological potential
