松嫩平原盐碱化草地植物群落格局成因分析

An analysis of the causes of the pattern in plant communitiesin the alkalized-salined grassland of Songnen Plain

本文利用100连续样带上每个样方中土壤因子及地上植物的总盖度及生物量数值,根据样方方差分析方法(BQV,TTLQV,PQV),计算不同区组面积上各个值的方差。发现调查样带上的植被存在着半径6-7m左右的聚集分布格局规模,同时,土壤因子pH、碱化度、土壤含水量也存在着半径6-7m左右的聚集分布格局规模,土壤有机质存在着半径8m左右的聚集分布格局规模,说明,地上植物群落的格局规模与土壤因子的格局规模是相近的。

Using the data of soil factor, total vegetation quadrate in a 100-metre-long continuous sample belt, coverage and the number of species on each sampling depending on the sample analysis of variance methods （BQV, TTLQV, PQV） , calculate every variance in different areas, to find the existence of around 6-7m radius of gathered scale distribution pattern for the vegetation in the investigation sample belt. And it also found for the soil factor ph, basicity, soil moisture. Moreover, the radius of around 8m exists for soil organic matter. All above presents the similarity between the plant communities and soil factor in pattern scale, provides a strong evidence for the analysis of vegetation patterns.