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利用BIOME-BGC模型和树木年轮数据模拟1954~2008年川西米亚罗岷江冷杉林森林净初级生产力(NPP)动态,并构建了相应的NPP线性重建模型(方差解释量为44.8%),最终重建了该地区岷江冷杉林过去223年(1788~2010年)NPP的波动历史。在1788~2010年区间,岷江冷杉林NPP波动于498.66~563.65gC/m~2/a之间,平均值和标准差分别为527.2gC/m~2/a和12.45gC/m~2/a。森林NPP主要上升时期有1788~1811年、1832~1844年、1890~1928年和1969~1993年,NPP主要的下降时期有1812~1831年、1845~1860年、1929~1968年和1994年至今。重建NPP序列与气象数据的相关和响应函数分析发现,夏季至秋季温度是限制森林生长的最为重要的气候要素,另外前一年秋季至初冬温度和春季至初夏的降雨对森林生长也有一定的控制性影响。树木年轮是一种指示森林NPP动态变化的可靠待用材料,可以检验和校正包括BIOME-BGC模型在内的各种生态系统过程模型。
Using the BIOME-BGC model and tree-ring data, the net primary productivity (NPP) of Abies faxoniana forests in Mianyarong, Sichuan Province, was simulated from 1954 to 2008, and the corresponding NPP linear reconstruction model was constructed (the explained variance was 44.8%). Finally, The history of NPP fluctuation in the Abies surimi forest in the past 223 years (1788 ~ 2010) was reconstructed. During the period from 1788 to 2010, the NPP of Abies faxoniana fluctuated between 498.66 and 563.65 gC / m ~ 2 / a, and the mean and standard deviation were 527.2 gC / m ~ 2 / a and 12.45 gC / m ~ 2 / a, respectively . The main NPP rising periods were from 1788 to 1811, from 1832 to 1844, from 1890 to 1928 and from 1969 to 1993. The main periods of NPP decline were from 1812 to 1831, from 1845 to 1860, from 1929 to 1968 and from 1994 to the present . Correlation and response function analysis of reconstructed NPP sequences with meteorological data found that summer to autumn temperature is the most important climatic element to limit forest growth. In addition, rainfall from autumn to early winter and spring to early summer of the previous year also had some control over forest growth Sexual effects. The tree ring is a reliable, stand-by material that indicates the dynamics of NPP in forests and can test and correct various ecosystem process models, including the BIOME-BGC model.