青藏铁路沿线植物群落物种多样性研究OA北大核心CSCDCSTPCD
Species Diversity of Plant Communities Along Qinghai-Tibet Railway
对新建青藏铁路沿线植物群落多样性进行了研究。研究结果表明:(1)新建青藏铁路沿线各样带植物丰富度(S)的变化呈先上升后趋于平稳的趋势;物种多样性指数(H)、均匀度指数(J)均随样带的递进有缓慢上升之势。优势度指数(P)呈下降趋势。物种丰富度的多少在一定程度上决定H指数值的大小。同时,当多样性指数相近时,均匀度小的群落比均匀度大的群落其优势种更为明显,优势度也更高。(2)在多年冻土地带植物的次生恢复过程中,丰富度指数、多样性指数和均匀度指数的变化趋…查看全部>>
The species diversity of plant communities was investigated along the Qinghai—Tibet railway.The results show that the species richness index(S) increased and then remained steady.The Shannon—Wiener index(H),Pielou(evenness) index(J) were still rising gradually,however the Simpson(dominance) index(D) decreased.The S index value determined to some degree the H index.In the communities with similar S indices,the plant communities with higher J indices were ofte…查看全部>>
马涛;周金星
甘肃省水土保持科学研究所,甘肃兰州730020中国林业科学研究院荒漠化研究所,北京100091
农业科技
新建青藏铁路植物群落物种多样性次生恢复海拔
Qinghai-Tibet Railwayplant communitiesspecies diversitysecendary recoveryelevation
《水土保持通报》 2012 (2)
261-266,6
铁道部科技研究开发计划基金项目“青藏铁路灌丛植被生态恢复技术研究与示范”(2004G009)
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