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中国西部环境和生态科学研究计划 >
2002年资助项目 >
青藏高原东部高寒草甸生态系统退化过程及其可逆机理 >
科学论文 >
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http://hdl.handle.net/2239/72756
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| Title: | 青藏高原东缘高寒草甸植物群落的开花物候 |
| Other Titles: | Flowering phenology of alpine meadow plant community in eastern Qinghai-Tibetan Plateau |
| Authors: | Li, xiangqian(李向前)
Jia, Peng(贾鹏)
Zhang, Zhilong(章志龙)
Du, Guozhen(杜国祯) |
| Keywords: | 开花物候格局(flowering phenological pattern)
物候参数(flowering phenological parameter)
更新生态位(reg eneration niche)
开花期峰值(peak flowering date) |
| Issue Date: | Nov-2009 |
| Publisher: | 《生态学杂志》2009，28（11）：2202-2207. |
| Abstract: | [中文摘要]：利用2008年整个生长季的地面花期物候观测数据,初步研究了青藏高原东缘高寒草甸植物群落开花物候的动态、格局、参数间的联系及其与物种共存的关系。结果表明:植物群落的花期从5月初开始,8月上旬进入开花数目的高峰期,到10月初结束,遍及整个生长季节;不同物种进入花期的时间、峰值期及持续时间不同,各物种花期物候生态位相分离,但群落中大部分物种开花峰值期主要集中在7—8月;不同物种的开花峰值期时间与花期持续时间有负相关关系:开花越早的植物其花期持续时间越长;物种间的开花物候差异主要是由植物本身的特性和环境条件共同决定的,而群落水平上的开花物候格局主要受非生物因素的控制。
[英文摘要]： Based on the observation on the flowering phenology in the whole growt h season of 2008, the dynamics, patterns, and relationships among various parame ters of flowering phenology of alpine meadow plant community in eastern Qinghai -Tibetan Plateau were studied, and the potential effects of above-mentione d fa ctors on the species coexistence of the plant community were approached. The flo wering period of the plant community started from early May, came into peak peri od in the first ten days of August, and ended in early October, extending all over whole growth period Different species had their different first flow erring date,peak flowerring period and flowering duration, and their flowering phonological niches, differentiated obviously. Most species had their peak flowering period centralized in July-August, There was a negative relationship between peak flowering period and flowering duration. The earlier the flowering, the longer the flowering duration. The differenes in flowering phonology among the species werw mainly detemined by species perse characteristics and environmental conditions, but the flowering phonological pattern on community leve was prinarily controlled by abiotic factors. |
| URI: | http://hdl.handle.net/2239/72756 |
| Appears in Collections: | 科学论文
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| 青藏高原东缘高寒草甸植物群落的开花物候.pdf | | 594Kb | Adobe PDF | View/Open |
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