人为活动对野生大豆种群的影响

Preliminary Investigation of the Impact of Human Activities on Population of Wild Soybean

分析了长江北岸润扬大桥附近受人为活动影响程度不同的3种生境内植物群落组成、群落特征、野生大豆种群特征等。结果表明,人为活动对群落组成、群落特征、野生大豆种群特征等产生不同程度的影响。群落高度、芦苇密度与野生大豆密度、野生大豆高度间存在着不同程度的相关性;野生大豆密度与群落高度、芦苇密度之间存在0.05水平显著的负相关关系,野生大豆高度与群落高度、芦苇密度间均存在0.01水平显著的正相关关系,表明群落高度和芦苇密度明显影响野生大豆种群特征。

Wild soybean（ Glycine soja Sieb.et Zucc. ）is the primary gene source of in＇proved soybean cultivars（ Glycine max（L. ） Men＇. ）.Human activities place profound impacts on the population distribution of wild soybean. Tne investigation was carried out at the north side of Runyang Bridge. Three ecological environments, which was different in degree of human intervention, was chosen. Plant population conrposition, population feature and wild soybean population were investigated. The results showed that human activities placed different impact on the plant population composition, population feature and the population of wild soybean in different ecological environments. Tne density of wild soybean was negatively correlated with population height and the density of reeds. The plant height of wild soybean was positively correlated with the population height and the density of reeds. Tnese indicated that population height and the density of reeds produced significant impacts on the population features of wild soybean.