宁夏平原沟渠湿地植物群落分布的主要环境因子影响分析

Analysis of Main Environmental Influencing Factors for Ditch Wetland Plant Community Distribution in Ningxia Plain

从植物群落的基础样方调查出发,研究了宁夏平原沟渠湿地植物群落分布的主要影响因子及其相互关系。结果表明:宁夏平原沟渠湿地的植物群落分布主要受到水分、有机质、盐分和土壤pH的影响。其中,水分是其最主要的环境影响因子,其次是有机质,盐分和pH。盐分和有机质分别对群落的生物多样性和平均高度两个群落数量指标有着显著的影响,分别用Y=0.08×17.731x(R2=0.219*)和Y=0.679x-0.068(R2=0.207**)两种曲线方程拟合,进而将环境因子和群落数量指标量化。

Started from the plant community foundation quadrate survey, the main influencing factors for Ningxia plain ditch wetland plant community distribution and their relation are studied in this paper. The results show that Ningxia plain ditch wetland plant community distribution is mainly affected by the distribution of moisture, organic matter, salt and the soil of pH. Among them, moisture is the most main environmental impact factor, followed by organic matter, salt and pH value. Salt and organic matter has significant effect on the community biodiversity and average height, which can be simulated by the two equations, namely Y = 0. 08 X17. 731x（R2 =0. 219＂ ） and Y=0. 679 x=0. 068 （R2=0. 207＊ ＊ ） two kind of equation of a curve fitting, and the environmental factor and community quantitative index quantificatioru