Carbon storage in China's terrestrial ecosystems: A synthesis.
Carbon storage in China's terrestrial ecosystems: A synthesis.
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DOI：
10.1038/s41598-018-20764-9
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发表时间：
2018-02-12
影响因子：
4.6
通讯作者：
Ge J
中科院分区：
文献类型：
--
作者：
Xu L;Yu G;He N;Wang Q;Gao Y;Wen D;Li S;Niu S;Ge J
准确估算陆地生态系统碳储量具有重要意义。然而，由于缺乏数据，碳储量的空间格局和驱动因素仍然不清楚。本文收集了2004年至2014年发表的关于中国陆地生态系统碳储量的文献数据，探讨了不同生态系统碳储量的变化，并评估了影响因素。结果表明，该地区土壤总碳储量为99.15 ± 8.71 PgC，其中植被碳储量为14.60 ± 3.24 PgC，土壤有机碳储量为84.55 ± 8.09 PgC。森林、草地、湿地、灌木和农田生态系统（不包括植被）的碳储量分别为34.08 ± 5.43、25.69 ± 4.71、3.62 ± 0.80、7.42 ± 1.92和15.17 ± 2.20 PgC。除土壤养分和质地外，气候是影响碳储量空间格局的主要因素。气候通过不同途径影响Veg-C和SOC密度的空间格局，Veg-C主要受年平均降水量（MAP）的正影响，而SOC主要受年平均温度（MAT）的负影响。中国碳储量的系统估计提供了关于气候如何限制碳固存的新见解，展示了MAP和MAT对Veg-C和SOC的对比效应;因此，这些参数应纳入未来的土地管理和碳固存战略。
It is important to accurately estimate terrestrial ecosystem carbon (C) storage. However, the spatial patterns of C storage and the driving factors remain unclear, owing to lack of data. Here, we collected data from literature published between 2004 and 2014 on C storage in China’s terrestrial ecosystems, to explore variation in C storage across different ecosystems and evaluate factors that influence them. We estimated that total C storage was 99.15 ± 8.71 PgC, with 14.60 ± 3.24 PgC in vegetation C (Veg-C) and 84.55 ± 8.09 PgC in soil organic C (SOC) storage. Furthermore, C storage in forest, grassland, wetland, shrub, and cropland ecosystems (excluding vegetation) was 34.08 ± 5.43, 25.69 ± 4.71, 3.62 ± 0.80, 7.42 ± 1.92, and 15.17 ± 2.20 PgC, respectively. In addition to soil nutrients and texture, climate was the main factor regulating the spatial patterns of C storage. Climate influenced the spatial patterns of Veg-C and SOC density via different approaches, Veg-C was mainly positively influenced by mean annual precipitation (MAP), whereas SOC was negatively dependent on mean annual temperature (MAT). This systematic estimate of C storage in China provides new insights about how climate constrains C sequestration, demonstrating the contrasting effects of MAP and MAT on Veg-C and SOC; thus, these parameters should be incorporated into future land management and C sequestration strategies.
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