摘要
通过对呼兰河口区域的初步调查,统计出该区共有种子植物65科,229属,463种,占黑龙江省种子植物的27.84%。在科的分布区类型构成上,世界广布科占总科数的53.85%,热带性质和温带性质分布科均占总科数的23.08%;属一级分布区类型统计分析表明,温带分布属占总属数55.46%,而中亚分布属仅占0.87%;温带分布属中以北温带分布属最多,占总属数的25.33%;种的地理成分统计分析可知,呼兰河口区域具有明显的温带性质,且植物区系成分丰富,多区系成分种重叠混杂。该区植被大体上分为4个植被型组、9个植被型、24个群系(群从)。区内药用、蜜源、饲用、食用、绿化和和纤维等资源植物丰富,有较高的经济价值。且有国家Ⅱ级保护植物4种:紫椴(Tilia amurensis)、野大豆(Glycine soja)、莲(Nelumbo nucifera)和浮叶慈菇(Sagitans natans)。
An experiment was conducted to study the flora of the seed plants in Hulan estuary area. There are 65 families, 229 genera and 463 species of seed plants recorded from Hulan estuary, accounting for 27. 840% of the total seed plants in Heilongjiang Province. In the floristic composition of the seed plants, the families of world distribution make up 53.85% of the total family, while the tropical distribution and temperate distribution all make up 23.08%. The statistics of the ge- nus areal-types shows that the genera of temperate distribution make up 55.46% of the total genus, while the genera in central Asia account for 0.87%. Furthermore, the genera of north temperate distribution account for 25.33% of the total sum of the genera. The area exhibits the characteristics of temperate distribution in terms of the composition of species. The floristic compositions are abundant and the species of different floristic components are overlapped. The vegetation can be generally classified into 4 vegetation types, 9 vegetation types, and 24 formations （associations）. Abundant medicinal plants, nectar plants, feed plants, edible plants, green plants and fiber-rich plants are with high economic value in the Hulan estuary area. There are four species of national protection plants （II） in the Hulan estuary area including Tilia amu- rensis, Glyci~ soja, Nelumbo nucifera and Sagittaria natans.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2013年第8期82-85,90,共5页
Journal of Northeast Forestry University
