浙江开化山区森林区系的地理成分研究

STUDY ON THE GEOGRAPHICAL COMPOSITION OF FOREST FLORA IN KAIHUA MOUNTAINOUS AREA, ZHEJIANG PROVINCE

开化山区面积占总面积的８８％．是浙江植物种类最丰富的地区，有野生木本植物８３２种，隶属于９５科２７２属．在对森林区系统计和分析的基础上，着重研究了地理成分，认为它们具有下列特征：１．木本植物种类非常丰富；２．古老、孑造和珍稀濒危植物较多；３．区系地理成分复杂，与世界各地植物区系有广泛联系；４．２７０个属可划分为１４个类型（包含１２个变型）；５．温带成分占优势．

Kaihua, located in the west of Zhejiang Ptovince,is the richest plant area in the Province.88% of the total area of Kaihua is the mountainous area. It is now known that there are 832species of wild woody plants which belong to 270 genera alld 95 families in Kaihua Mountainous Area. Based on the statistics and analysis of the forest flora of Kaihua Mountainous Area,their geographical compositions are mainly studied and the bssic features of forest flora are Summarized as follows: 1. The woody plant SPecies are very rich; 2. There are abundant ancient, relict, rare and nearly exerminating plants; 3. The geographical elements are complex and in wide connection with the flora of the world; 4. 270 genera can be divided into 14 distribution types (containing 12subtypes); 5. The temperate elements have a dominant position.