滇中高原华山松人工林碳储量及固碳释氧效益

Carbon storage and fi xation, oxygen release of Pinus armandii plantations in middle Yunnan plateau, China

采用样方法和收获法,根据光合作用方程式、碳税法和人工制氧法,对云南玉溪磨盘山华山松人工林（16 a中龄林、26 a近成熟林、43 a成熟林）生物量、碳储量及其空间分布特征和固碳释氧进行了研究。结果如下：三种林龄华山松人工林的生物量分别为181.515 t·hm-2、284.679 t·hm-2、295.311 t·hm-2,碳储量分别为85.751 3t C·hm-2、139.934 4 t C·hm-2、132.508 6 t C·hm-2,净碳储量分别为：5.365 3 t C·hm-2·a-1、5.383 6 t C·hm-2·a-1和3.082 7t C·hm-2·a-1;三种林龄群落各层碳储量均为乔木层〉枯落物层〉灌木层〉草本层,三种林龄乔木层的碳储量分别占：91.37%、94.99%、93.70%;不同林龄相同器官（根、皮、叶、干、枝）之间变异系数在2.10%~7.33%之间,而同一林龄不同器官的变异系数在2.12%~5.82%之间;方差分析结果显示除成熟林乔木外,另两种林龄乔木各营养器官之间均存在显著差异;华山松中龄林、近成熟林、成熟林同化大气中CO2和释放出O2价值量分别是355 044.221 3 yuan·hm-2,216 003.386 1 yuan·hm-2,556 831.529 6 yuan·hm-2和338 767.648 4 yuan·hm-2、577 627.367 6 yuan·hm-2和351 419.513 0 yuan·hm-2。

Biomass, carbon storage and spatial distribution characteristics, carbon fixation and oxygen release of the 16-year-old, 26-year-old and 43-year-old Pinus armandii plantations in Mopanshan Mountain in Yuxi, middle Yunnan plateau, southwest China were studied by adopting quadrat method and harvest method, and synthetically using photosynthesis equation, carbon tax and artificial oxygen method. The results are as follows： the biomass values of the three kinds of P. armandii plantations were 181.515 t·hm-2, 284.679 t·hm-2 and 295.311 t·hm-2, their total of carbon storage were 85.7513 t·hm-2,139.9344 t·hm-2,and 132.5 086 t·hm-2, their net carbon storages were： 5.3653 t·hm-2·a-1, 5.3836 t·hm-2·a-1 and 3.0827 t·hm-2·a-1; The carbon storage values in three kinds of forest age communities about various forest stories ranked from large to small order as this： carbon storage in arborous layer litter layer shrub layer herb layer, Carbon storages in arborous layer of three kinds of forest age accounted for 91.594%, 94.760% and 93.838% respectively; the variation coefficients of different forest age in the same organs（root, bark, leaf, stem, branch） were in the interval of 2.10% ~ 7.33%, while those of same forest age in different organs were in the interval of 2.12% ~ 5.82%; The variance analysis showed that apart from the arborous trees of the mature forest, and two other forest＇s arborous trees showed significant differences between nutritive organs; The middle-aged forest, near mature forest, mature forest of P. armandii plantations assimilated CO2 in the atmosphere, and desorbed O2, the value quantity of the assimilation CO2 and emancipation O2 were 355 044.221 3 yuan·hm-2, 216 003.386 1 yuan·hm-2 and 556 831.529 6 yuan·hm-2, and 338 767.648 4 yuan·hm-2、577 627.367 6 yuan·hm-2和 351 419.513 0 yuan·hm-2, respectively.