河南金岗台山区的植被及其垂直分布

THE MAIN VEGETATION TYPES AND THEIR VERTICAL DISTRIBUTIONS OF JINGANGTAI MOUNTAINOUS REGION IN HENAN

根据样方中的种类统计，组成金岗台山区植被的种子植物计有１０５科，３４９属，５６６种；其区系特征为：地理成分复杂，有１４个分布区类型；温带区系特征较为明显，其成分占４２．２％，热带成分占３３．６％；且有一定的古老和特有成分。植被的生活型谱为高位芽植物占３９．６％，地面芽植物占３１．４％，地上芽植物占１０％，地下芽植物占１２％，一年生植物占７％。主要植被类型计有５个植被型，５个植被亚型和３９个群系。垂直带谱为海拔２００─６００ｍ为落叶、常绿阔叶混交林与低山落叶阔叶林组成的复合带，海拔６００─１５００ｍ为中高山落叶阔叶林（包括矮林）带，海拔１５００ｍ以上为灌丛、草甸带。

The Jingangtai mountainous region is on the south fringe of Henan, situated at 31°42′─31°45′N, 115°29′─115°38′E.Based On our preliminary studies,some results are summarized as follows:1.There are 105 families, 349 genera and 556 species of seed plants,and the floristic elements are complex and interlaced, with obvious vertical replacement phenomenon as well as the majority of temperate elements and a lot of tropical elements. 2.The life forms are according to Raunkier’s classification : phaenerophyte (39.6%),chamaephyte(10.0%), hemicryptophyte(31.4%),geophyte(12.0%)and therophyte(7.0%).3. The main vegetation types are divided into 5 vegetation types, 5 subvegetation types and 39 formations. 4. The vertical belts of vegetation are :(1)the deciduous and evergreen broadleaved mixied forest and deciduous broad-leaved forest complex zone at alt. 200─260m,(2)the deciduous broad-leaved forest zone at alt. 600─1500m, which includes the middle mountainous deciduous broad-leaved forest subzone at alt. 600─1300m,and the high mountainous short forest subzone at alt. 1300─1500, and(3)the shrub and meadow zone at alt.over 1500m.