[1]FENG Jinghong,LIU Ying,XIAO Henglin,et al.Photosynthesis and Carbon Sequestration Characteristics of Typical Plants and Their Influencing Factors in Reservoir Riparian Region of Three Gorges Reservoir[J].Research of Soil and Water Conservation,2020,27(01):305-311.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
305-311
Column:
Public date:
2020-02-20
- Title:
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Photosynthesis and Carbon Sequestration Characteristics of Typical Plants and Their Influencing Factors in Reservoir Riparian Region of Three Gorges Reservoir
- Author(s):
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FENG Jinghong, LIU Ying, XIAO Henglin, LIU Yu, WU Genghua, WANG Kejian
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(School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Key Laboratory of Ecological Remediation of Lakes & Rivers and Algal Utilization of Hubei Province, Wuhan 430068, China)
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- Keywords:
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water-level-fluctuating zone of Three Gorges Reservoir; carbon sink; photosynthetic and Carbon Sequestration
- CLC:
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Q948
- DOI:
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-
- Abstract:
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In order to explore the vegetation characteristics of photosynthetic carbon sequestration and carbon sequestration potential of wetland ecosystem in the Three Gorges Reservoir area. 15 species of typical plants in the water-level-fluctuating zone of Three Gorges Reservoir in Chongqing were selected as the research samples to analyze their property of photosynthetic and carbon sequestration. The daily carbon sequestration capacity was quantitatively calculated. And then the correlation between photosynthesis and the main physiological environment factors and the stoichiometric characteristics of nitrogen(N), phosphorus(P)in leaves were analyzed. The results show that:(1)the total nitrogen of plant leaf among the tested plant types is equivalent to that on the regional scale, but the phosphorus content is much higher, and there is no correlation between the average photosynthetic rate and leaf total nitrogen and total phosphorus;(2)there is a significant or extremely significant positive correlation between the net photosynthetic rate and photosynthetic active radiation, transpiration rate and stomatal conductance, but a significant or extremely significant negative correlation with intercellular CO2 concentration;(3)different types of plants have different assimilation amounts of sunlight, carbon sequestration amount per unit leaf area and carbon sequestration amounts per unit land area; with respect to the carbon sequestration ability, Salix sp, Vitex negundo var. cannabifolia and Urena lobata, Phragmites australias and Polygonum hydropiper have the higher abilities of carbon sequestration. In the ecological restoration project of the water-level-fluctuating zone of the Three Gorges Reservoir Area, we should select some vegetation with high efficient and potential carbon sinks, such as Salix, Urena lobata, Phragmites australias and Polygonum hydropiper, and so on, and to build multi-layer mixed community, as well as to solve the ecological problems of the water-level-fluctuating zone of the Three Gorges Reservoir Area.