| 三江平原湿地小叶章生产力模拟模型 |
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| 引用本文： | 张文菊,童成立,刘守龙,宋长春,吴金水.三江平原湿地小叶章生产力模拟模型[J].植物生态学报,2006,30(5):844-851. |
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| 作者姓名： | 张文菊 童成立 刘守龙 宋长春 吴金水 |
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| 作者单位： | 1 中国科学院亚热带农业生态研究所亚热带农业生态重点实验室, 长沙 410125; 2 华中农业大学资源 与环境学院, 武汉 430070; 3 中国科学院东北地理与农业生态研 究所, 长春 130012 |
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| 基金项目： | 中国科学院基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 利用气象台站的常规观测资料，依据植物生长模拟理论，以d为步长，建立了湿地小叶章（Deyeuxia angustifolia）植被生产力动态模拟模型。该模型包括3个子模块： 1）光合作用与呼吸作用；2）干物质 积累；3）同化物分配，主要考虑了温度和积水因子对植物生长的影响。并利用实测资料对该模型进行了 检验，结果表明：小叶章地上活体、枯落物、茎 、叶各器官枯落物的模拟值与实测值之间均呈极显著的 线性相关（R2分别为0.98、0. 99、0. 99和0.92）。在相邻区域的检验结果也表明，季节性积水沼泽化草 甸小叶章的地上生物量明显高于常年积水沼泽。两类湿地小叶章地上生物量的模拟值与实测值之间均呈极 显著线性相关（R2分别为0.66和0.79）。相近区域长期定位观测点连续2年的模拟结果与实测值之间也具 有极显著的线性相关（R2分别为0.97和.76）。
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| 关 键 词： | 湿地生态系统 三江平原 生物量 模拟模型 |
| 收稿时间： | 2005-09-09 |
| 修稿时间： | 2006-03-23 |
A MODEL TO SIMULATE NET PRIMARY PRODUCTION OF DEYEUXIA ANGUSTIFOLIA IN WETLANDS IN SANJIANG PLAIN, CHINA |
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| 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].Acta Phytoecologica Sinica,2006,30(5):844-851. |
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| Authors: | ZHANG Wen-Ju TONG Cheng-Li LIU Shou-Long SONG Chang-Chun WU Jin-Shui |
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| Affiliation: | 1 Key Laboratory of Subtropical Agro_Ecology, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China; 2 College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China; 3 Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, China |
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| 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 CO-2 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. |
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| Keywords: | Wetland ecosystem Sanjiang Plain Biomass Simulating model |
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