ZHENG Miao.Estimation and Analysis of Carbon Sequestration and Oxygen Release Efficiency of Three Forest Types in the Upper Reaches of Luanhe River[J].Research of Soil and Water Conservation,2019,26(04):363-366,374.
滦河上游3种林分类型固碳释氧效益估算
- Title:
- Estimation and Analysis of Carbon Sequestration and Oxygen Release Efficiency of Three Forest Types in the Upper Reaches of Luanhe River
- 分类号:
- S718.56
- 摘要:
- 为探究滦河上游3种林分类型固碳释氧效益，以针叶林、阔叶林与针阔混交林作为研究对象，以3种林分类型的蓄积量、生物量、碳密度、氧气释放量4个指标为基础对3种林分类型固碳释氧的效益进行了评价分析。结果表明：（1）3种林分类型各龄期蓄积量与阔叶林在林分中占的比例成正比，阔叶林最大，针叶林最小，而针阔混交林居中；在中幼龄时期，针叶林的平均生物量都是最小的，而近熟与成熟时期阔叶林的平均生物量为最小，这与林分内林木本身的生长规律有关。（2）中幼龄时期碳密度、氧气释放量最小的为针叶林，而近熟龄与成熟龄时期最小的为阔叶林，两者都与林木的生长速度呈正相关，生长越快，固碳释氧量越大，而林分的价值量与两者的变化规律一致。（3）整个生命周期平均固碳释氧总价值排序为：针阔混交林 > 针叶林 > 阔叶林，说明针阔混交林固碳释氧的总价值是最高的，而阔叶林固碳释氧总价值最低。
- Abstract:
- In order to explore three forest types of carbon fixation and oxygen release efficiency, the upper reaches of the Luanhe River, Coniferous forest, broad-leaved forest and coniferous forest were taken as the research example. Based on the four indicators such as accumulation volume, biomass, carbon density and oxygen release of three types of stands, the benefits of carbon sequestration and oxygen release from three forest types were evaluated. The results showed that: (1) the accumulation of three forest types at different ages was proportional to the proportion of broad-leaved forest in the forests, the broad-leaved forest was the largest, the coniferous forest was the smallest, and the coniferous and broad-leaved forest was in the middle; the average biomass of the coniferous forest in the early period is the smallest, while the average biomass of the broad-leaved forest in the near-mature and mature period is the smallest, which is related to the growth pattern of the forest; (2) coniferous forests have the lowest carbon density and oxygen release during the middle and young ages, and broad-leaved forests have the lowest carbon density and oxygen release at the mature ages, both of which are positively correlated with the growth rate of trees, and the faster the growth, the greater the amount of carbon sequestration and oxygen release, and the value of the stand is consistent with the change of the two indicators; (3) the average value of average carbon sequestration and oxygen release in the whole life cycle decreased in the order: coniferous and broad-leaved mixed forest > coniferous forest > broad-leaved forest, indicating that the total value of carbon fixation and oxygen release in coniferous and broad-leaved mixed forest is the highest, while total value of carbon fixation and oxygen release is the lowest.
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备注/Memo
收稿日期:2018-10-22;改回日期:2018-11-03。
基金项目:林业职业教育立项研究课题成果“园林类专业群面向‘中国职业教育2030’的产教融合改革与创新研究”（LYZJ2018YB009）
作者简介:郑淼(1978-),女,山西交城人,硕士,副教授,主要从事园林林业工程与水土保持研究。E-mail:112972426@qq.com