河南的水生植被

<正> 一、概况河南地处祖国中原,介于我国北亚热带和南暖温带的过渡地区,地理座标为北纬31°23′——36°22′,东径110°21′——116°39′。本省地势西高东低,气候温和,四季分明,具有过渡性气候的特点,年均温多为14℃左右,年降水量为600——1300毫米。水资源较丰富,全省共有大小河流1500余条,分别属于黄河、淮河、海河和长江四大水系,此外还有许多江湖沟渠、坑塘堰库等,总计水域面

HYDROPHYTE VEGETATION OF HENAN PROVINCE

Henan province is in the central part of china, in latitute 31°23′——36°22′ north, longitude 110°21′——116°39′east. The annual mean temperature is about 14°c, annual mean precipitation is 600——1300ram. The river system of the province includes the Huanghe, the Huaihe, the Haihe and the Changjang Rivers. Hydrophyte vascular plant of the relgion consists of 35 families,55 genera and 105 species. Hydrophyte vegetation of the region consists of three types and twentythree formation. Acconding to hydrophyte vegetation types, the author puts forwad some suggestions