摘要
汾河是山西最大的河流 ,也是注入黄河的第二大支流 ,全长 6 95km ,河漫滩草地面积约770km2 。河漫滩有维管植物 6 1 4种 ,其中种子植物 6 0 5种 ,隶属于 6 9科 2 79属。种子植物区系成分在属和种的水平上均以温带成分占绝对优势 ,种的地理成分构成上中国特有分布比在属水平上显著的多 ,既反映出植物区系具有的温带性质 ,又反映出该植物区系组成的隐域性特点。Raunki aer’s生活型组成依次为隐芽植物 (5 1 .0 7%) >一年生植物 (3 3 .0 6 %) >地面芽植物 (9.42 %) >高位芽植物 (4.79%) >地上芽植物 (1 .6 5 %) ;Drude’s生活型以草本植物为主占总种数的 92 .5 6 %。在水分生态类型中 ,中生植物占总种数的 70 .5 2 %,水生植物和湿生植物占总种数的 2 1 .6 6 %,旱生植物占总种数的 7.82 %。按照不同的经济用途 ,把植物资源的分为 1 1类。研究结果客观地反映了汾河河漫滩种子植物多样性的现状。并提出了保护河漫滩生物多样性和生态恢复的 4点建议。
The Fen River rises in Guancen mountain within the boundaries of Ninwu county in the northwest of Shanxi province. It is the largest river in Shanxi province. It is 695 km long. The flood plain grassland covers about 770km 2. The floodplain of Fen River is rich in diversity of vascular plant, including 74 families, 284 genera, 614 species based on survey. Among them there are 605 species of seed plant, which belong 279 genera and 69 families. In composition of the floristic geographical elements of the genera and the species, the temperate elements take dominant position. On the composition of specific geographical element, endemic to China is most marked difference to the genera. This is reflected the temperate character of the flora as well as a zonal characteristic of the composition of the flora. The composition of Raunkiaer's life-from are arranged cryptophytes(51.07%)> therophytes(33.06%)> hemicryptophytes(9.42%)> phanerophytes(4.79%)> chamaephytes(1.65%).In composition of Drude's life-from, Perennial herb and annual herb take dominant position(92.56%).In composition of ecological types,there are Mesophytes (70.52%),Hydrophytes and hygrophyte(21.66%),Xerophytes(7.82%). Vascular plan in flood plain of the Fen River are divided into 11 groups according to their economic purposes. The result is objectively reflected status of seed plant diversity in flood plain of the Fen River. Furthermore,four strategies for conserving biodiversity in flood plain of the Fen River were suggested.
出处
《植物研究》
CAS
CSCD
北大核心
2001年第4期546-553,共8页
Bulletin of Botanical Research
基金
山西省自然科学基金资助项目 (No .9810 2 3)
关键词
汾河河漫滩
草地
种子植物
多样性
保护对策
湿地
flood plain of Fen River
grassland
seed plant
diversity
conservation strategy
