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楚雄州森林碳储量及碳密度多维度分析

Multi-dimensional Analysis of Forest Carbon Stock and Carbon Density in Chuxiong Prefecture

  • 摘要: 为全面掌握楚雄州碳储量、碳密度及其地理分布规律,以《楚雄州2021年森林资源状况》数据库为基础,利用生物量方程法中的全林生物量的计算方法,结合不同树种的含碳率,测算出楚雄州森林碳储量和碳密度,并从森林类型、林地权属、森林起源、森林龄组多个维度对碳储量和碳密度进行分析。结果表明:楚雄州森林碳储量59207354 t,平均碳密度29.20 t/hm2。乔木林碳储量56528958 t,占全州总碳储量的95.48%;集体林碳储量大于国有林,但碳密度则小于国有林;天然林碳储量41364150 t,占全州总碳储量的69.86%,其中天然乔木林碳储量39743636 t,占全州总碳储量的67.13%,天然林碳储量和碳密度均大于人工林;乔木林中云南松林和栎类林碳储量最高,达50426571 t,占全州总碳储量的85.17%;楚雄州森林植被碳储量和碳密度均呈现出南部和西北部较高、中部和东北部较低的态势,碳储量和碳密度分布不均衡,碳储量最大双柏县是最小元谋县的9.3倍,碳密度最大双柏县是最小元谋县的2.3倍。本研究可为楚雄州实现碳达峰碳中和提供科技支撑和决策依据。全面掌握楚雄州碳储量、碳密度及其分布特点,为提高森林植被碳汇能力、实现碳达峰碳中和及碳汇资源开发利用提供科学依据。

     

    Abstract: To gain a comprehensive understanding of carbon stock, carbon density, and their geographical distribution in Chuxiong Prefecture, the study utilized the database in 2021 Forest Resources Situation of Chuxiong Prefecture as the primary data source, and the total forest biomass calculation in the biomass equation method incorporated the carbon content of various tree species to determine the carbon stock and carbon density in Chuxiong Prefecture. The analysis of carbon stock and carbon density was conducted based on factors such as forest type, forest land ownership, forest origin, and forest age group. The results show that the carbon stock of forest in Chuxiong Prefecture is 59207354 t, the average carbon density is 29.20 t/hm2. The carbon stock of arbor forest is 5652958 t, accounting for 95.48% of the total carbon stock in the state. The collective forest has a larger carbon stock than the state-owned, but the carbon density is less than the state-owned forest. The natural forest carbon stock is 41364150 t, accounting for 69.86% of the total carbon stock, of which the carbon stock of natural arbor forest is 39743636 t, accounting for 67.13% of the total carbon stock, and the carbon stock and carbon density of natural forest are both greater than the artificial forest. The carbon stock of Pinus yunnanensis and Quercus forest are the highest in arbor forest, reaching 50426571 t, accounting for 85.17% of the total carbon stock. Forest vegetation carbon stock and carbon density both show a higher trend in the south and northwest, and a lower trend in the central and northeast, the distribution of stock and carbon density is unbalanced. The largest carbon storage in Shuangbai County is 9.3 times greater than that of the smallest Yuanmou County, and the highest carbon density in Shuangbai County is 2.3 times greater than that of the smallest Yuanmou County. This study offers technological support and a foundation for decision-making to reach carbon peak and carbon neutrality in Chuxiong Prefecture. By comprehensively understanding the distribution characteristics of carbon storage and carbon density in the area, a scientific basis is established for enhancing the carbon sink capacity of forest vegetation, attaining carbon peak and carbon neutrality, and effectively developing and utilizing carbon sink resources.

     

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