基于连清数据的广西森林碳储量动态变化研究

doi:10.13466/j.cnki.lyzygl.2015.06.021

摘要/Abstract

摘要： 基于2000年、2005年、2010年3期森林资源清查资料,采用森林乔木蓄积量-生物量转换关系法估算不同年度广西森林的碳储量和碳密度,并根据不同森林类型生产力与生物量之间的回归方程,对不同时期广西各森林类型的总生产力及固碳释氧功能的总价值进行推算。结果表明:10年间广西森林的碳储量总体呈上升的趋势,广西森林总碳储量由2000年的197.18Tg增长到2010年的337.15Tg,年均增长率为7.10%。平均碳密度在2000—2010年间呈不断增长趋势,3个年度平均碳密度分别为26.38,34.92和37.29Mg/hm²。不同森林类型中,以栎类、软阔类、硬阔类及阔叶混交林为代表的阔叶林对3个年度森林总碳储量贡献较大,分别占同期总碳储量的68.66%,68.19%和67.82%。天然林碳储量占同期碳储量的比例逐渐减少,而人工林碳储量则以年均11.96%的增速不断增长。10年间广西森林的总生产力固碳释氧价值量呈增加趋势,3个年度的总生产力分别为68.87,75.54和81.90Tg;固碳释氧总价值量分别为1 331.48,1 460.49和1 583.44亿元。

关键词: 蓄积量, 生物量, 碳储量, 碳密度, 广西

Abstract: The dynamic change of carbon storage,carbon density and the value of carbon fixation and oxygen release by forest ecosystem were studied in Guangxi Zhuang Autonomous Region in order to provide the reference basis for the forest scientific management based on forest inventory data.The carbon storage and carbon density of forest in Guangxi Zhuang Autonomous Region were assessed by the regression between forest volume and stand biomass of different forest types.The total productivity and the carbon fixation and oxygen release value were estimated by the regression between stand biomass and net production of each forest type.The total forest carbon storage of Guangxi had a rising trend overall in recent 10 years.The total forest carbon increased to 33 715 million tons from 19 718 million tons from 2 000 to 2 010,the annual average growth was 7.1%.Three annual average carbon densities were 26.38,34.92 and 37.29 tons per hectare in 2000,2005 and 2010.An increase trend was showed from 2000 to 2010.The broad-leaved forest had a larger contribution to total forest carbon storage among different forest types,accounted for 68.66%,68.19% and 67.82% of the annual total carbon storage in 2000,2005 and 2010.The proportion of natural forest carbon storage was decreasing while the plantations carbon storage increased with annual average growth of 12.0% during this period.Both the total forest productivity and the carbon fixation and oxygen release value were increased in Guangxi,the total productivity was 6 887,7 554 and 8 190 million tons in 2000,2005 and 2010.The total value of carbon fixation and oxygen release were 133.148,146.049,and 158.344 billion Yuan respectively.

Key words: forest volume, stand biomass, carbon storage, carbon density, Guangxi

中图分类号:

S718.55

韩明臣, 梁玉莲. 基于连清数据的广西森林碳储量动态变化研究[J]. 林业资源管理, 2015, 0(6): 111-116.

HAN Mingchen,LIANG Yulian. Study on Changes in Forest Biomass Carbon Storage Based on Forest Inventory Data in Guangxi[J]. FOREST RESOURCES WANAGEMENT, 2015, 0(6): 111-116.

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