1-s2.0-S2468265923000513-mmc2

l We compiled pollination data for 112 flowering plants in the Qinghai-Tibet Plateau to test the hypothesis that plants at higher elevations should have lower degrees of dependence on pollinators for seed production.
l We found that pollinator dependence of flowering plants in the Qinghai -Tibet Plateau region was particularly high compared to other regions around the world.
l There was no evidence for a lower level of pollinator dependence at high elevations.
l Pollen limitation, flower size, floral longevity, and reward type had no significant effect on pollinator dependence, but compatibility status and flowering time did.
l Our study suggests a severe vulnerability of flowering plant seed production to pollinator declines under global change in the Qinghai -Tibet Plateau region, particularly for early-flowering or self-incompatible plants growing in the higher elevations.

1. 我们收集了青藏高原112种显花植物（flowering plants）的传粉数据，以验证"海拔越高的植物，其种子生产对传粉者（pollinator）的依赖程度越低"这一假说。
2. 研究发现，相较于全球其他区域，青藏高原区域的显花植物对传粉者的依赖程度尤其偏高。
3. 未发现高海拔区域植物传粉者依赖程度更低的相关证据。
4. 花粉限制（pollen limitation）、花大小、花寿命（floral longevity）以及传粉奖励类型（reward type）对传粉者依赖程度无显著影响，但植物亲和性状态（compatibility status）与开花时间（flowering time）则存在显著影响。
5. 本研究表明，在全球变化背景下，青藏高原区域的显花植物种子生产极易受到传粉者数量下降的严重影响，对于生长在高海拔区域的早开花植物或自交不亲和（self-incompatible）植物而言尤为如此。