A MODEL TO SIMULATE NET PRIMARY PRODUCTION OF DEYEUXIA ANGUSTIFOLIA IN WETLANDS IN SANJIANG PLAIN, CHINA

doi:10.17521/cjpe.2006.0107

Abstract

Abstract:

Background and Aims Carbon sequestration in ecosystems is determined largely by primary production of ecosystems. The application of long-term observation of vegetation biomass limits ecological and global change research. Therefore, it is necessary to apply simulation models to estimate an ecosystem's input of organic carbon and forecast the impact of climate change.

Methods Based on the principles of plant physiology, a simulation model was developed to simulate primary production of Deyeuxia angustifolia in wetland ecosystems. It is driven by conventional parameters observed from meteorological stations. This model consists of three main function modules: photosynthesis-respiration, accumulation of assimilated matter and distribution of assimilated matter. The effects of temperature, waterlogging and increased concentration of atmosphere CO₂ on the growth of D. angustifolia were taken into account in this model. The model was validated by comparing observed and simulated data of aboveground living and litter biomass of D. angustifolia.

Key Results The dynamics of aboveground living biomass, total litter, stem litter and leaf litter of D. angustifolia were simulated correctly. The liner correlation between simulated and observed values was highly significant.

Conclusions Validation results from an adjacent area and a field experiment station also showed that the simulated values were significantly correlated with observed values in seasonally and permanently waterlogged D. angustifolia ecosystems. Daily changes of primary production, biomass and liter of D. angustifolia in wetland ecosystems could be effectively simulated by this model.

Key words: Wetland ecosystem, Sanjiang Plain, Biomass, Simulating model

ZHANG Wen-Ju, TONG Cheng-Li, LIU Shou-Long, SONG Chang-Chun, WU Jin-Shui. A MODEL TO SIMULATE NET PRIMARY PRODUCTION OF DEYEUXIA ANGUSTIFOLIA IN WETLANDS IN SANJIANG PLAIN, CHINA[J]. Chin J Plant Ecol, 2006, 30(5): 844-851.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2006.0107

https://www.plant-ecology.com/EN/Y2006/V30/I5/844

Figures/Tables 8

References 31

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地点 Site	时间 Time	经纬度 Geographic position	数据类型 Data type	数据来源 Data resource
黑龙江宝清原种场 Original breed farm in Baoqing, Heilongjiang Province	1988~1989	46°19' N, 132°11' E	气象数据 Meteorological data	国家气象站(宝清站) National meteorological station (Baoqing)
			生物量 Biomass	马克平, 1993; 马克平等, 1993
黑龙江宝清七星河乡 Qixinghe, Baoqing, Heilongjiang Province	1992~1993	46°45' N, 132°05' E	气象数据 Meteorological data	国家气象站(宝清站) National meteorological station (Baoqing)
			生物量 Biomass	倪红伟等, 1999
三江平原沼泽湿地生态试验站 Swamp ecological experiment station in Sanjiang Plain	2003~2004	47°35' N, 133°17' E	气象数据 Meteorological data	三江平原沼泽湿地生态试验站 Swamp ecological experiment station in Sanjiang Plain
			生物量 Biomass	三江平原沼泽湿地生态试验站 Swamp ecological experiment station in Sanjiang Plain

地点 Site	时间 Time	经纬度 Geographic position	数据类型 Data type	数据来源 Data resource
黑龙江宝清原种场 Original breed farm in Baoqing, Heilongjiang Province	1988~1989	46°19' N, 132°11' E	气象数据 Meteorological data	国家气象站(宝清站) National meteorological station (Baoqing)
			生物量 Biomass	马克平, 1993; 马克平等, 1993
黑龙江宝清七星河乡 Qixinghe, Baoqing, Heilongjiang Province	1992~1993	46°45' N, 132°05' E	气象数据 Meteorological data	国家气象站(宝清站) National meteorological station (Baoqing)
			生物量 Biomass	倪红伟等, 1999
三江平原沼泽湿地生态试验站 Swamp ecological experiment station in Sanjiang Plain	2003~2004	47°35' N, 133°17' E	气象数据 Meteorological data	三江平原沼泽湿地生态试验站 Swamp ecological experiment station in Sanjiang Plain
			生物量 Biomass	三江平原沼泽湿地生态试验站 Swamp ecological experiment station in Sanjiang Plain

模型参数 Parameters of model	数值 Value	来源与说明 References and note
消光系数 Extinction coefficient (k)	0.5	刘以连和丑自明,1994
叶片透射率 Leaf transmissivity (m)	0.12	刘以连和丑自明,1994
光合作用响应曲线初始斜率 Initial slope of photosynthesis response curve (α)	12×10^-6	France & Thornley, 1991
CO₂传导系数 CO₂ Conductivity coefficient (τ)	0.002	France & Thornley, 1991
地上部分维持呼吸系 Aboveground maintenance respiration coefficient (k₁)	0.015	de Penning Vries & van Laar, 1986
地下部分维持呼吸系数 Underground maintenance respiration coefficient (k₂)	0.022	de Penning Vries & van Laar, 1986
生长呼吸系数 Growth Respiration coefficient (Cg)	0.30	de Penning Vries & van Laar, 1986
呼吸作用的温度系数 Temperature coefficient (Q₁₀)	2.0	黄耀等,2005
总辐射对光合有效辐射的转换系数 Coefficient of total radiation to PAR (C_Q)	0.5	周允华,1988

模型参数 Parameters of model	数值 Value	来源与说明 References and note
消光系数 Extinction coefficient (k)	0.5	刘以连和丑自明,1994
叶片透射率 Leaf transmissivity (m)	0.12	刘以连和丑自明,1994
光合作用响应曲线初始斜率 Initial slope of photosynthesis response curve (α)	12×10^-6	France & Thornley, 1991
CO₂传导系数 CO₂ Conductivity coefficient (τ)	0.002	France & Thornley, 1991
地上部分维持呼吸系 Aboveground maintenance respiration coefficient (k₁)	0.015	de Penning Vries & van Laar, 1986
地下部分维持呼吸系数 Underground maintenance respiration coefficient (k₂)	0.022	de Penning Vries & van Laar, 1986
生长呼吸系数 Growth Respiration coefficient (Cg)	0.30	de Penning Vries & van Laar, 1986
呼吸作用的温度系数 Temperature coefficient (Q₁₀)	2.0	黄耀等,2005
总辐射对光合有效辐射的转换系数 Coefficient of total radiation to PAR (C_Q)	0.5	周允华,1988