Effects of stand age on soil respiration in Pinus massoniana plantations in the hilly red soil region of Southern China
Effects of stand age on soil respiration in Pinus massoniana plantations in the hilly red soil region of Southern China
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林龄对南方红壤丘陵区马尾松人工林土壤呼吸的影响
DOI：
10.1016/j.catena.2019.03.038
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发表时间：
2019-07
期刊：
影响因子：
6.2
通讯作者：
Liu Jian
中科院分区：
文献类型：
--
作者：
Yu Kunyong;Yao Xiong;Deng Yangbo;Lai Zhuangjie;Lin Lingchen;Liu Jian
研究林龄对土壤呼吸的影响对于了解造林的潜在固碳能力具有重要意义。以南方水土流失区4种不同林龄（8、17、27和36年生）的马尾松人工林为研究对象，研究了不同林龄马尾松人工林的SR和小气候变化。结果表明，4个林龄林分的SR具有明显的季节动态，夏季最高，冬季最低。我们还发现，SR随林龄的增加而增加，8年、17年、27年和36年生林分的平均SR分别为1.45、1.83、2.03和2.32 μmol CO2m−2s−1。此外，所有的林分表明，SR随土壤温度的增加呈指数增加，SR（Q10）的温度敏感性为2.08，2.09，2.23，和2.19为8年，17年，27年，36年的林分，分别。27年生和36年生林分的Q10值显著高于其他两个林分（p< 0.05）。逐步多元回归分析表明，土壤温度对土壤比表面积的影响大于土壤有机碳。这项研究提供了见解估计SR inP。该报告分析了中国南方侵蚀区马尾松人工林的碳收支状况，并强调在预测未来不同气候变化情景下的碳收支时，需要考虑林分年龄和季节模式的影响。
It is of great importance to assess the effect of stand age on soil respiration (SR) to understand the potential carbon sequestration capacity of afforestation. In this study, we investigated the changes in SR and microclimate variables in a chronosequence of four different aged stands (8-, 17-, 27-, and 36-year-old) in aPinus massonianaplantation in the soil erosion area of southern China. SR was found to have obvious seasonal dynamics among the four aged stands, and the highest and lowest value in summer and winter, respectively. We also found that SR increased with increasing stand age, and the mean SRs for the 8-, 17-, 27-, and 36-year-old stands were 1.45, 1.83, 2.03, and 2.32 μmol CO2m−2s−1, respectively. Furthermore, all stands showed that SR increased exponentially with increasing soil temperature and that the temperature sensitivity of SR (Q10) was 2.08, 2.09, 2.23, and 2.19 for 8-, 17-, 27-, and 36-year-old stands, respectively. Moreover, the Q10values for the 27- and 36-year-old stands were significantly higher than those of the other two stands (p< 0.05). Stepwise multiple regression analysis indicated that soil temperature had a greater effect on SR than soil organic carbon. This study provides insights for estimating SR inP. massonianaplantations in the eroded area of southern China and highlights the need to consider the effect of stand age and seasonal patterns when predicting the carbon budget under different future climate change scenarios.
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影响因子：
6.9
作者：
S. Behera;M. D. Behera;R. Tuli
通讯作者：
S. Behera;M. D. Behera;R. Tuli
林龄调节华北落叶松人工林土壤呼吸对温度的响应
影响因子：
6.2
作者：
Yue, Chao;Yue, Chao;Yang, Yan;Yang, Yan
通讯作者：
Yang, Yan
影响因子：
4
作者：
C. Gough;J. Seiler;P. Eric;Wise Man;Christopher A. Maier
通讯作者：
C. Gough;J. Seiler;P. Eric;Wise Man;Christopher A. Maier
影响因子：
3.4
作者：
Z. Gu;Xuezheng Shi;Lin Li;Dongsheng Yu;Liu Liu-Liu;Wentai Zhang
通讯作者：
Z. Gu;Xuezheng Shi;Lin Li;Dongsheng Yu;Liu Liu-Liu;Wentai Zhang
影响因子：
5.7
作者：
D. Tian;Yuanying Peng;Wende Yan;X. Fang;Wenxing Kang;Guangjun Wang;Xiaoyong Chen
通讯作者：
D. Tian;Yuanying Peng;Wende Yan;X. Fang;Wenxing Kang;Guangjun Wang;Xiaoyong Chen