论文部分内容阅读
通过对广东省石灰岩地区植物的野外调查,初步发现该地区可作观赏用途的野生植物有467种,分隶于116科.该地区野生植物资源在生物学特性上有其特殊性,喜钙植物是构成广东石灰岩植被的主要成份.从观赏用途角度出发,该地区观赏植物资源可分为观赏蕨类植物、盆景树桩植物、绿化树种及攀援植物、野生花卉植物、阴生及肉质植物和兰科观赏植物七大类.广东石灰岩观赏植物可分成两个分布区域,即英德至怀集一线以南和以北两个主要分布区.在该线南部地区以常绿植物为主,北部地区有较多的落叶植物;此线以南石灰岩区因植被受破坏严重,种类较贫泛.广东石灰岩地区观赏植物的分布与所处的自然植被带及石灰岩植被的发育和保存状况有密切联系.
Through the field survey of the plants in the limestone area of Guangdong Province, 467 species of wild plants that can be used for ornamental purposes in the area were initially found, belonging to 116 families. The biological characteristics of wild plant resources in this area have their particularity. Hi calcium plant is the main component of limestone vegetation in Guangdong. From the perspective of ornamental purposes, ornamental plant resources in the region can be divided into ornamental ferns, bonsai stump plants, tree species and climbing plants, wild flowers plants, shade and succulent plants and Orchidaceae seven categories. Guangdong limestone ornamental plants can be divided into two distribution areas, namely Yingde to Huaiji line south and north of the two main distribution areas. In the southern part of the line, there are evergreens and there are more deciduous plants in the northern part of the line. Due to the serious destruction of vegetation in the limestone area to the south of this line, the species is rather poor. The distribution of ornamental plants in limestone areas of Guangdong is closely related to the development of natural vegetation belts and the development and preservation of limestone vegetation.