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| 论文编号: |
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| 论文题目: |
Response of Two Dominant Boreal Freshwater Wetland Plants to Manipulated Warming and Altered Precipitation |
| 英文论文题目: |
Response of Two Dominant Boreal Freshwater Wetland Plants to Manipulated Warming and Altered Precipitation |
| 第一作者: |
邹元春 |
| 英文第一作者: |
Zou, Y. C. |
| 联系作者: |
吕宪国 |
| 英文联系作者: |
Lu, X. G. |
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| 发表年度: |
2014 |
| 卷: |
9 |
| 期: |
8 |
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| 摘要: |
This study characterized the morphological and photosynthetic responses of two wetland plant species when they were subject to 2-6 degrees C fluctuations in growth temperature and +/- 50% of precipitation, in order to predict the evolution of natural wetlands in Sanjiang Plain of North-eastern China. We investigated the morphological and photosynthetic responses of two dominant and competitive boreal freshwater wetland plants in Northeastern China to manipulation of warming (ambient, +2.0 degrees C, +4.0 degrees C, +6.0 degrees C) and altered precipitation (-50%, ambient, +50%) simultaneously by incubating the plants from seedling to senescence within climate-controlled environmental chambers. Post-harvest, secondary growth of C. angustifolia was observed to explore intergenerational effects. The results indicated that C. angustifolia demonstrated a greater acclimated capacity than G. spiculosa to respond to climate change due to higher resistance to temperature and precipitation manipulations. The accumulated effect on aboveground biomass of post-harvest secondary growth of C. angustifolia was significant. These results explain the expansion of C. angustifolia during last 40 years and indicate the further expansion in natural boreal wetlands under a warmer and wetter future. Stability of the natural surface water table is critical for the conservation and restoration of G. spiculosa populations reacting to encroachment stress from C. angustifolia expansion. |
| 英文摘要: |
This study characterized the morphological and photosynthetic responses of two wetland plant species when they were subject to 2-6 degrees C fluctuations in growth temperature and +/- 50% of precipitation, in order to predict the evolution of natural wetlands in Sanjiang Plain of North-eastern China. We investigated the morphological and photosynthetic responses of two dominant and competitive boreal freshwater wetland plants in Northeastern China to manipulation of warming (ambient, +2.0 degrees C, +4.0 degrees C, +6.0 degrees C) and altered precipitation (-50%, ambient, +50%) simultaneously by incubating the plants from seedling to senescence within climate-controlled environmental chambers. Post-harvest, secondary growth of C. angustifolia was observed to explore intergenerational effects. The results indicated that C. angustifolia demonstrated a greater acclimated capacity than G. spiculosa to respond to climate change due to higher resistance to temperature and precipitation manipulations. The accumulated effect on aboveground biomass of post-harvest secondary growth of C. angustifolia was significant. These results explain the expansion of C. angustifolia during last 40 years and indicate the further expansion in natural boreal wetlands under a warmer and wetter future. Stability of the natural surface water table is critical for the conservation and restoration of G. spiculosa populations reacting to encroachment stress from C. angustifolia expansion. |
| 刊物名称: |
Plos One |
| 英文刊物名称: |
Plos One |
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| 英文参与作者: |
Wang, G. P.; Grace, M.; Lou, X. N.; Yu, X. F.; Lu, X. G. |
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