Ecosystem Carbon Allocation of a Temperate Mixed Forest and a Subtropical Evergreen Forest in China
Ecosystem Carbon Allocation of a Temperate Mixed Forest and a Subtropical Evergreen Forest in China
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中国温带混交林和亚热带常绿林生态系统碳分配
DOI：
10.5814/j.issn.1674-764x.2018.06.007
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发表时间：
2018-11
影响因子：
--
通讯作者：
Leiming Zhang
中科院分区：
文献类型：
--
作者：
Yiwei Luo;Leiming Zhang
摘要：生态系统碳分配通过对不同碳库和碳交换的量化，可以直观地反映生态系统的碳循环。通过对长白山成熟温带混交林（CBM）和鼎湖山成熟亚热带常绿林（DHM）的生态清查和涡旋相关方差测量，将生态系统碳库和碳交换划分为不同的组分，确定了各组分之间的分配，并分析了各组分之间的关系。总体上，CBM的总碳储量略高于DHM，这是由于CBM乔木层的碳储量更高。有趣的是，两种成熟森林的植被、土壤和凋落物中碳储量的比例相似。植被碳库与土壤碳储量之比分别为1.5和1.3。然而，CBM下植被碳库中的碳更多分配给树干和根系，而DHM下则更多分配给叶片和树枝。此外，77%的土壤碳储量局限于表层（0 ~ 20 cm），而DHM的深层土壤中仍有丰富的碳储量。CBM和DHM的根冠比分别为0.30和0.25。净生态系统生产力（NPP）与总生态系统生产力（GPP）之比分别为0.76和0.58，生态系统呼吸（Re）与GPP之比分别为0.98和0.87。净生态系统碳交换/生产力（NEP）为：CBM为0.24 t C ha-1 - 1， DHM为3.38 t C ha-1 - 1。由于受环境因子的影响，生态系统碳交换存在普遍的季节和年际变化，因此有必要利用长期记录数据对生态系统碳汇容量进行评价。
Abstract: Ecosystem carbon allocation can indicate ecosystem carbon cycling visually through its quantification within different carbon pools and carbon exchange. Using the ecological inventory and eddy covariance measurement applied to both a mature temperate mixed forest in Changbai Mountain (CBM) and a mature subtropical evergreen forest in Dinghu Mountain (DHM), we partitioned the ecosystem carbon pool and carbon exchange into different components, determined the allocation and analyzed relationships within those components. Generally, the total carbon stock of CBM was slightly higher than that of DHM due to a higher carbon stock in the arbor layer at CBM. It was interesting that the proportions of carbon stock in vegetation, soil and litter were similar for the two mature forests. The ratio of vegetation carbon pool to soil carbon stock was 1.5 at CBM and 1.3 at DHM. However, more carbon was allocated to the trunk and root from the vegetation carbon pool at CBM, while more carbon was allocated to foliage and branches at DHM. Moreover, 77% of soil carbon storage was limited to the surface soil layer (0-20 cm), while there was still plentiful carbon stored in the deeper soil layers at DHM. The root/shoot ratios were 0.30 and 0.25 for CBM and DHM, respectively. The rates of net ecosystem productivity (NPP) to gross ecosystem productivity (GPP) were 0.76 and 0.58, and the ratios of ecosystem respiration (Re) to GPP were 0.98 and 0.87 for CBM and DHM, respectively. The net ecosystem carbon exchange/productivity (NEP) was 0.24 t C ha–1 yr–1 for CBM and 3.38 t C ha–1 yr–1 for DHM. Due to the common seasonal and inter-annual variations of ecosystem carbon exchange resulting from the influence of environmental factors, it was necessary to use the long record dataset to evaluate the ecosystem sink capacity.
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影响因子：
16.6
作者：
通讯作者：
--
影响因子：
2.8
作者：
B. Zhu;Xiangping Wang;Jingyun Fang;S. Piao;Haihua Shen;Shuqing Zhao;C. Peng
通讯作者：
B. Zhu;Xiangping Wang;Jingyun Fang;S. Piao;Haihua Shen;Shuqing Zhao;C. Peng
影响因子：
--
作者：
Tang Xu
通讯作者：
Tang Xu
DOI：
10.3402/tellusb.v44i2.15428
发表时间：
1992-04
期刊：
Tellus B
影响因子：
--
作者：
J. Raich;W. Schlesinger
通讯作者：
J. Raich;W. Schlesinger
影响因子：
6.9
作者：
D. Wen;N. He
通讯作者：
D. Wen;N. He