China is geographically large and has variegated ecosystems , and this has made it one of the countries with the richest biodiversity in the world . more than 30000 species of seed plants , 581 species of mammals , 1244 species of birds , 376 species of reptilians , and 284 species amphibians have been identified 中国地域辽阔，生态系统类型多样，决定了中国是世界上生物多样性最丰富的国家之一，我国目前已知种子植物30000余种，兽类581种，鸟类1244种，爬行类376种，两栖类284种。
As for the family distribution types , there are 40 families of tropic type , accounting for 57 . 14 % of the total , and 17 families of temperate type , accounting for 24 . 29 % of the total . as for the genus distribution type , there are 75 genera of tropic type , accounting for 53 . 96 % of the total , and 42 genera of temperate type , accouting for 30 . 22 % of the total 种子植物的科的分布区类型中，属于热带分布的科共40个，占总科数的57 . 14 ，属于温带分布的科共17个，占总科数的24 . 29 ；种子植物的属的分布区类型中，属于热带分布的共75属，占总属数的53 . 96 ，属于温带分布的共42属，占总属数的30 . 22 。
According to the statistics of main journals about late 50 years in our country , our phytologists pay attention to the comparative anatomy studies of the carpoplyte , such as the structure of vascular tissue , leaf and leaf epidermis , the structure and development of flower , the characteristic of seed and seed coat , the secretory tissue , some primitive carpophytes and so on 根据近50年国内主要期刊统计，我国植物学者重点在种子植物的维管组织结构、叶及其表皮结构、花的结构和发育、种子及种皮特征、分泌组织以及一些原始种子植物等方面开展了比较解剖研究，为一些植物科、属的系统分类提供了解剖学依据。
Resveratrol ( trans - 3 , 5 , 4 - trihydroxystilbene ) is a naturally occurring phytoalexin produced by some spermatophytes , such as grapevines , in response to injury . research shows that resveratrol possesses activities of modulation of lipid metabolism , inhibition of lipid peroxidation ( ldl , membranes ) and platelet aggregation , etc . meanwhile as it can reduce coronary heart - disease mortality and features the activity of anti - inflammatory , it is condidered to have some beneficial effects on human health 白藜芦醇( resveratrol )是由一些种子植物对受伤作出反应时产生的一种植保素，实验证明白藜芦醇能够调节脂代谢和抑制低脂蛋白的氧化和血小板的凝集，而且能够提供心血管保护，并具备抗炎症和抗癌特性，对保护人体健康十分有益。
