山西裸子植物分布研究

Study on the Distribution of Gymnospermae in Shanxi

以山西省裸子植物为研究对象,应用地理信息系统软件MapInfo对裸子植物中各科的分布进行分析,结果表明裸子植物在山西南部分布的科数多于北部,主要集中在山西南部的临汾、长治、晋城和运城,各科中以松科和柏科分布最广,几乎遍布全省各地,其次是杉科和麻黄科,杉科主要分布在山西南部,麻黄科则主要是分布在山西中北部,而银杏科和红豆杉科分布范围较小,只分布在个别的几个地区.

The distribution of each family in Gymnospermae is analysed with Gymnospermae in Shanxi based on MapInfo software. The results are as follows. The family number of Gymnosperrnae in the south is more than that in the north where is in Linfen,Changzhi,Jin cheng and Yuncheng that are situated on the south of Shanxi. Pinaceae and Cypressaceae that spread almost all over Shanxi distribute broadest. Taxodiaceae and Ephedraeeae are next. Taxodiaceae mainly distributes in the south of Shanxi, but Ephedraceae is in the center and north of Shanxi. The distribution scope of Ginkgoaceae and Taxaceae is smaller,only in the individual several areas