闲置试验田紫云英花海景观的单一性空间分布格局研究

Plots of the Spatial Distribution Pattern of Single Astragalus sinicus Flowers Analysis

以江西农业大学紫云英花海试验田为研究对象,以斑块为调查的基本单位,对试验田花海植物景观的花卉个体数目、分枝情况和空间分布特征、空间方位等,进行景观空间均匀度分析和景观破碎化指数分析。研究发现,斑块边缘和中间位置的4个不同方位,以中部偏北部分作为Pmax的参数,其值为1.681 94。紫云英花海植物构成的斑块均匀度普遍值为0.84以上,整体具有相当高的均匀度水平。东部、南部、西部、北部的破碎化指数分别为0.24、0.145、0.25和0.22,南部的景观破碎化指数较另外3个方位的景观破碎化程度小,整体性较强。通过均值和标准差分析比较,南部和西部的景观破碎化指数差异性较小,东部区域和北部区域的景观破碎化指数差异性较大。对单一性的紫云英花海植物景观的空间研究发现,花海植物景观的种植和方位有一定的联系,选择具分枝形式的花卉对花海植物景观的营造具有一定的指导意义。

The research used Jiangxi Agriculture University as a research object,the paper choose plaque as a base unique,analysis the Astragalus sinicus flowers＇ individual number,branch,spatial distribution characteristics and spatial orientation to calculate the Astragalus sinicus flowers evenness index and fragmentation index.Researching finding that four different directions in the middle and in the edge of the plaque,the Pmaxparameter is in the middle of the north,the value is 1.681 94.The Astragalus sinicus flowers＇ plaque evenness index common values are all above 0.84,which has a fairly high evenness index level.The fragmentation index in the eastern,southern,western and northern were 0.24,0.145,0.25,0.22 respectively. The fragmentation in the southern part was smaller than other parts of the plots and it was integrality.By comparing the mean value and the standard deviation,the fragmentation level is lower than others in the southern and western part,in the eastern and northern part the level has a bigger difference. Single space research finding that the planting of Astragalus sinicus flowers has contact with the location,choosing the flowers has branches make significances to the landscape flowers.