IBIS模型验证与东北东部森林NPP季节变化模拟研究  

Simulation Research on NPP Seasonal Changes of Eastern Forest in the Northeast and IBIS Model Validation

作　　者：刘曦[1] 国庆喜[1] 刘经伟[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《森林工程》2010年第4期1-7,10,共8页Forest Engineering

基　　金：国家林业局"948"项目(2006-4-19);国家科技部(2006BAD03A0703);林业公共效益基金(No.200804001);黑龙江省自然科学基金(42400625-09112/C030602);东北林业大学青年科研基金(09049);中央高校基本科研业务费专项资金项目(DL09AA04)

摘　　要：IBIS(Integrated Biosphere Simulator)模型是生态系统过程模型,代表着全球碳循环模拟的研究方向。基于2004和2005年帽儿山不同植被类型净初级生产力(NPP)实测数据,修改IBIS模型参数,使其更适合于我国东北东部地区NPP模拟,并从点至面展开区域范围内NPP的模拟。结果如下:IBIS模型能够较好的模拟生长季温度和降水,但对非生长季尤其是初春和冬季温度和降雨(雪)模拟不足,对不同植被类型NPP模拟误差均小于众文献,表明该模型在本区域内的适用性。NPP表现出比较明显的季节变化特征,夏季NPP是全年最高的季节,占全年NPP的53%～70%;NPP最低值出现在冬季,2004年和2005年NPP均以春季变化最剧烈。IBIS （ Integrated Biosphere Simulator） model is an ecosystem process model, representing the research direction of global carbon cycle simulation. Based on the measured data of net primary productivity （NPP） in different vegetation types from Maoer Mountain in 2004 and 2005, this article modified the IBIS model parameters to make it more suitable for NPP simulation in the eastern part of China＇s northeast and the NPP simulation was launched in the region from points to plane surface. The results were as follows： IBIS model could better simulate the temperature and precipitation during the growing season, but in non-growing season, especially in early spring and winter the temperature and precipitation （snow） simulation salues of different vegetation types were less than the those repoited in public literature. NPP indicated an obvious seasonal variation character, the NPP in summer was the highest of the whole year, accounting for 53% -70% of the annual NPP. The NPP in winter was the lowest of the whole year, and the spring NPP changes were most intense in 2004 and 2005.

关 键 词：IBIS 净初级生产力 季节变化 

分 类 号：S718.5[农业科学—林学]