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利用FORECAST模型模拟不同轮伐期对楠木人工林固碳量的影响

发表时间:2012-10-15  浏览量:1135  下载量:328
全部作者: 王伟峰,魏晓华,廖为明,刘苑秋,JuanABLANCO
作者单位: 江西农业大学园林与艺术学院;加拿大英属哥伦比亚大学地球环境科学中心;纳瓦拉国立大学生态模型研究中心
摘 要: 利用加拿大不列颠哥伦比亚大学开发的FORECAST森林生态系统管理模型,通过外业调查、查找相关文献资料等方式收集不同立地条件下楠木(Phoebe bournei)林分的生物量积累、林分密度、光响应曲线及土壤养分等方面的数据。模型经过校准和检验后,模拟不同轮伐期对楠木人工林固碳量的影响。结果表明:长轮伐期(80年)作业模式明显优于中等轮伐期(40年)和短轮伐期(20年)作业模式。从养分循环的角度分析,在长轮伐期作业模式下楠木人工林群落结构比较稳定,林分内凋落物量较多,降低了人为干扰的频率和强度,因此对林地的保护作用效果显著,是一种可持续的经营模式。
关 键 词: 森林经理学;FORECAST模型;楠木人工林;轮伐期;固碳量
Title: Effects of different rotation on carbon sequestration in Phoebe bournei plantation forests using FORECAST ecosystem model
Author: WANG Weifeng, WEI Xiaohua, LIAO Weiming, LIU Yuanqiu, Juan A BLANCO
Organization: College of Landscape and Art, Jiangxi Agricultural University; Department of Earth and Environmental Sciences, University of British Columbia (Okanagan); Department of Ciencias del Medio Natural, Universdiad Publica de Navarra, Campus de Arrosadia
Abstract: In this study, the forest ecosystem model, FORECAST was used to simulate the effects of different management strategies on carbon sequestration in phoebe forests. Data on forest biomass, stand density, light response curve and soil nutrients under different site conditions were collected from field surveys or published papers. After the model calibration and validation, FORECAST was run with various management scenarios including different rotation lengths. The main conclusions are as follows: The rotation length of 80 years is superior to shorter rotation (eg: 20 years or 40 years). Rotation length is important for influencing forest carbon sequestration with a longer and higher carbon sequestration. Phoebe bournei plantations has obvious role on soil improvement, especially on the poor site. As a hardwood species, Phoebe produces a large amount of decomposition litter and nutrients, which is important for maintaining high carbon sequestration.
Key words: forest management; FORECAST ecosystem model; Phoebe bournei plantations; rotation; carbon sequestration
发表期数: 2012年10月第19期
引用格式: 王伟峰,魏晓华,廖为明,等. 利用FORECAST模型模拟不同轮伐期对楠木人工林固碳量的影响[J]. 中国科技论文在线精品论文,2012,5(19):1892-1903.
 
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