Carbon Stocks across a Fifty Year Chronosequence of Rubber Plantations in Tropical China
论文编号: | |||||||||
作者: | Liu CG; Pang JP | ||||||||
刊物名称: | Forests | ||||||||
所属学科: | |||||||||
论文题目英文: | Carbon Stocks across a Fifty Year Chronosequence of Rubber Plantations in Tropical China | ||||||||
年: | Jun 2017 | ||||||||
卷: | 8 | ||||||||
期: | 6 | ||||||||
页: | 209 | ||||||||
联系作者: | Tang JW | ||||||||
收录类别: | |||||||||
影响因子: | 1.951 | ||||||||
参与作者: | |||||||||
备注: | |||||||||
摘要: | Transition from forest to rubber (Hevea brasiliensis Muell. Arg.) plantation has occurred in tropical China for decades. Rubber has been planted on 1 million ha to provide raw materials to the rubber industry. The role of various-aged rubber plantations in carbon (C) sequestration remains unclear. The biomass C accumulation including latex C and C distribution in soil of five different-aged stands (7, 13, 19, 25 and 47 years old) were examined. The total biomass C stock (TBC) and total net primary productivity (NPPtotal), whether with or without latex C, had a close quadratic relationship with stand age. Regardless of stand age, around 68% of the C was stored in aboveground biomass, and NPPlatex contributed to approximately 18% of C sequestration. Soil organic carbon stock in the 100-cm depth remained relatively stable, but it lost about 16.8 Mg ha−1 with stand age. The total ecosystem C stock (TEC) across stands averaged 159.6, 174.4, 229.6, 238.1 and 291.9 Mg ha−1, respectively, of which more than 45% was stored in the soil. However, biomass would become the major C sink rather than soil over a maximal rubber life expectancy. Regression analysis showed that TEC for rubber plantation at 22 years is comparable to a baseline of 230.4 Mg ha−1 for tropical forest in China, and would reach the maximum value at around 54 years. Therefore, rubber plantation can be considered as alternative land use without affecting net forest ecosystem C storage. In addition to the potential C gains, a full set of ecosystem and economic properties have to be quantified in order to assess the trade-offs associated with forest-to-rubber transition. | ||||||||
论文下载: | 下载地址 | ||||||||
|