王朗自然保护区种子植物及其区系特征

四川王朗国家级自然保护区有种子植物78科264属537种30变种5亚种，其中裸子植物5科11属20种2变种，被子植物73科253属517种28变种5亚种。种子植物属的区系成分共12个类型，在所有成分中，以温带区系成分为主，达169属，占总属数的64．02％；中国特有分布属11属，占总属数的4．16％。此外，还分布有多种大熊猫主食竹如缺苞箭竹（Fargesiadenudate）和星叶草（Circaeasteragrestis）、独叶草（Kingaonia uniflora）、串果藤（Sinofranchetiachinensis）、天麻（Gastrodiaelata）等国家重要保护植物。

Floristic Analysis of Seed Plants in Wanglang Nature Reserve

Wanglang Nature Reserve is located in northwest Pingwu County, Sichuan Province, and between 103°55′- 104°10′E, 32°49′ - 33°02′N. There are 537 species,30 varieties and 5 sub-species of seed plants, belonging to 78 families,264 genera, among which gymnodperms have 5 families, 11 genera, 20 species ,2 varieties, and angiosperms have 73 families ,253 genera,517 species ,28 varieties ,5 sub-species. The floristic elements of genera are composed of 12 types of Chinese seed plants. The temperate floral elements have 169 genera, accounting for 64. 02% of total genera, and therefore hold a dominant position. The elements endemic to China have 11 genera, accounting for 4. 16% of total genera. Moreover, there are lots of bamboo as the main food of giant pandas such as Fargesia denudate, and some national protection categories such as Circaeaster agrestis, Kingdonia uniflora, Sinofranchetia chinensis, Gastrodia elata, and so on.