山西朔县种子植物区系及其生态经济意义

朔县(现朔州市朔城区)植物种属相对丰富,具有维管束植物938种,隶属于420属,105科。其植物区系主要起源于古北大陆;种子植物属的地理成分复杂多样,以温带成分占绝对优势,具有典型的温带草原性质;与相邻地区植物区系的比较分析表明,联系最为密切的是蒙古草原植物区系,其次是黄土高原植物区系。该县植物资源利用应采取的对策是:既要合理开发利用,又要加强物种的保护。

FLORA OF SPERMATOPHYTES AND ITS SIGNIFICANCE IN ECOLOGICAL ECONOMICS IN SHUO COUNTY,SHANXI PROVINCE

This paper chiefly disscuses the characteristics of Shuo County flora and its significance in ecological economics. The results show:It is now known that there are 938 species of vascular plants in Shuo County, belonging to 420 genera and 105 families, among which 925 species of spermatophytes belong to 410 genera and 97 families. Among these 410 genera there are 11 monotypic, 15 oligotypic and 6 Chinese endemic ones.According to professor Wu Zhengyi's areal patterns of Chinese spermatophyte genera, there are 14 areal patterns in Shuo County. Among the patterns temperate zone ones make the largest percentage (69.9% of total genera ). The flora of Shuo County, the nature of which is centrally temperate steppe zone, originated principally from Old North Continent.In comparison with other flora in China, We can see that the composition of Shuo County flora has the closest relation with Mongolia flora, andsecondly with Plateau floraThere are many economic plants in Shuo County, for example, there are 320 species of medicinal plants, 150 species of forage plants. Furthermore, exploitation, utilization and protection measures of plant resources in Shuo County are proposed in this paper.