Current forest carbon stocks and carbon sequestration potential in Anhui Province, China

doi:10.17521/cjpe.2015.0147

Abstract

Abstract:

Aims
This study was conducted to investigate carbon stocks in forest ecosystems of different stand ages in Anhui Province, and to identify the carbon sequestration potential of climax forests controlled by the natural environment conditions.
Methods
Data were collected based on field investigations and simulations were made with the BIOME4 carbon cycle model.
Important findings
Currently, the total forest carbon stocks in Anhui Province amounts to 714.5 Tg C: 402.1 Tg C in vegetation and 312.4 Tg C in soil. Generally, both the total and vegetation carbon density exhibit an increasing trend with the natural growth of forest stands. Soil carbon density increases from young to near mature forests, and then gradually decreases thereafter. Young and middle-aged forests account for 75% of the total forest area in Anhui Province, with potentially an additional 125.4 Tg C to be gained after the young and middle-aged forests reach near mature stage. Results of BIOME4 simulations show that potentially an additional 245.7 Tg C, including 153.7 Tg C in vegetation and 92 Tg C in soil, could be gained if the current forests are transformed into climax forest ecosystems in Anhui Province.

http://jtp.cnki.net/bilingual/detail/html/ZWSB201604012

Key words: carbon sequestration, climax forest communities, soil carbon density, soil carbon stocks, vegetation carbon density, vegetation carbon stocks

Yu-He JI, Ke GUO, Jian NI, Xiao-Niu XU, Zhi-Gao WANG, Shu-Dong WANG. Current forest carbon stocks and carbon sequestration potential in Anhui Province, China[J]. Chin J Plant Ecol, 2016, 40(4): 395-404.

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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2015.0147

https://www.plant-ecology.com/EN/Y2016/V40/I4/395

Figures/Tables 13

References 27

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	干 Stem	枝 Branch	叶 Leaf	根 Root	胸径 Diameter at breast height (cm)
马尾松 Pinus massoniana	W = 0.0337(D²H)^0.9551 R² = 0.996	W = 0.036(D²H)^0.7948 R² = 0.997	W = 0.0016(D²H)^1.1007 R² = 0.998	W = 0.015(D²H)^0.8322 R² = 0.974	1.0-50.4
杉木 Cunninghamia lanceolata	W = 0.0411(D²H)^0.8941 R² = 0.990	W = 0.0015(D²H)^1.062 R² = 0.999	W = 0.0108(D²H)^0.8246 R² = 0.999	W = 0.0314(D²H)^0.7592 R² = 0.990	1.0-85.5
甜槠栲 Castanopsis eyrei	W = 0.0278(D²H)^0.9251 R² = 0.998	W = 0.0137(D²H)^0.9053 R² = 0.994	W = 0.0054(D²H)^0.9248 R² = 0.997	W = 0.0013(D²H)^1.2697 R² = 0.975	4.9-52.9
苦槠栲 Castanopsis sclerophylla	W = 0.0201(D²H)^0.9719 R² = 0.990	W = 0.04101(D²H)^0.662 R² = 0.990	W = 0.0617(D²H)^0.5259 R² = 0.990	W = 0.0281(D²H)^0.8011 R² = 0.967	4.7-36.4
青冈 Cyclobalanopsis glauca	W = 0.0735(D²H)^0.8503 R² = 0.967	W = 0.0086(D²H)^1.0031 R² = 0.931	W = 0.0084(D²H)^0.8108 R² = 0.871	W = 0.0181(D²H)^0.8732 R² = 0.952	2.4-60.0
台湾松 Pinus taiwanensis	W = 0.0581(D²H)^0.8159 R² = 0.991	W = 0.0032(D²H)^1.128 R² = 0.987	W = 0.0091(D²H)^0.8579 R² = 0.986	W = 0.0133(D²H)^0.8872 R² = 0.988	4.0-79.5
湿地松 Pinus elliottii	W = 0.0474(D²H)^0.8841 R² = 0.994	W = 0.0079(D²H)^0.9572 R² = 0.993	W = 0.0166(D²H)^0.9734 R² = 0.971	W = 0.0070 (D²H)^1.1038 R² = 0.990	1.5-32.5
黑杨 Populus nigra	W = 0.0635(D²H)^0.8227 R² = 0.991	W = 0.171(D²H)^0.5689 R² = 0.995	W = 0.0568(D²H)^0.56 R² = 0.978	W = 0.0118(D²H)^0.8848 R² = 0.984	6.2-98.5
麻栎 Quercus acutissima	W = 0.0235(D²H)^0.9792 R² = 0.950	W = 0.0004(D²H)^1.3585 R² = 0.988	W = 0.0028(D²H)^0.8444 R² = 0.976	W = 0.0125(D²H)^0.9308 R² = 0.978	2.2-47.1
针叶混交林 Coniferous mixed forest	W = 0.018(D²H)^1.089 R² = 0.941	W = 0.013(D²H)^0.857 R² = 0.793	W = 0.005(D²H)^0.929 R² = 0.884	W = 0.021(D²H)^0.809 R² = 0.909	3.1-84.5
阔叶混交林 Broadleaved mixed forest	W = 0.045 (D²H)^0.874 R² = 0.953	W = 0.020 (D²H)^0.839 R² = 0.880	W = 0.010 (D²H)^0.780 R² = 0.848	W = 0.009 (D²H)^0.974 R² = 0.906	2.0-98.6
针阔混交林 Conifer-broadleaved mixed forest	W = 0.049(D²H)^0.870 R² = 0.955	W = 0.013(D²H)^0.867 R² = 0.817	W = 0.007(D²H)^0.860 R² = 0.843	W = 0.014(D²H)^0.874 R² = 0.891	2.0-98.6

	干 Stem	枝 Branch	叶 Leaf	根 Root	胸径 Diameter at breast height (cm)
马尾松 Pinus massoniana	W = 0.0337(D²H)^0.9551 R² = 0.996	W = 0.036(D²H)^0.7948 R² = 0.997	W = 0.0016(D²H)^1.1007 R² = 0.998	W = 0.015(D²H)^0.8322 R² = 0.974	1.0-50.4
杉木 Cunninghamia lanceolata	W = 0.0411(D²H)^0.8941 R² = 0.990	W = 0.0015(D²H)^1.062 R² = 0.999	W = 0.0108(D²H)^0.8246 R² = 0.999	W = 0.0314(D²H)^0.7592 R² = 0.990	1.0-85.5
甜槠栲 Castanopsis eyrei	W = 0.0278(D²H)^0.9251 R² = 0.998	W = 0.0137(D²H)^0.9053 R² = 0.994	W = 0.0054(D²H)^0.9248 R² = 0.997	W = 0.0013(D²H)^1.2697 R² = 0.975	4.9-52.9
苦槠栲 Castanopsis sclerophylla	W = 0.0201(D²H)^0.9719 R² = 0.990	W = 0.04101(D²H)^0.662 R² = 0.990	W = 0.0617(D²H)^0.5259 R² = 0.990	W = 0.0281(D²H)^0.8011 R² = 0.967	4.7-36.4
青冈 Cyclobalanopsis glauca	W = 0.0735(D²H)^0.8503 R² = 0.967	W = 0.0086(D²H)^1.0031 R² = 0.931	W = 0.0084(D²H)^0.8108 R² = 0.871	W = 0.0181(D²H)^0.8732 R² = 0.952	2.4-60.0
台湾松 Pinus taiwanensis	W = 0.0581(D²H)^0.8159 R² = 0.991	W = 0.0032(D²H)^1.128 R² = 0.987	W = 0.0091(D²H)^0.8579 R² = 0.986	W = 0.0133(D²H)^0.8872 R² = 0.988	4.0-79.5
湿地松 Pinus elliottii	W = 0.0474(D²H)^0.8841 R² = 0.994	W = 0.0079(D²H)^0.9572 R² = 0.993	W = 0.0166(D²H)^0.9734 R² = 0.971	W = 0.0070 (D²H)^1.1038 R² = 0.990	1.5-32.5
黑杨 Populus nigra	W = 0.0635(D²H)^0.8227 R² = 0.991	W = 0.171(D²H)^0.5689 R² = 0.995	W = 0.0568(D²H)^0.56 R² = 0.978	W = 0.0118(D²H)^0.8848 R² = 0.984	6.2-98.5
麻栎 Quercus acutissima	W = 0.0235(D²H)^0.9792 R² = 0.950	W = 0.0004(D²H)^1.3585 R² = 0.988	W = 0.0028(D²H)^0.8444 R² = 0.976	W = 0.0125(D²H)^0.9308 R² = 0.978	2.2-47.1
针叶混交林 Coniferous mixed forest	W = 0.018(D²H)^1.089 R² = 0.941	W = 0.013(D²H)^0.857 R² = 0.793	W = 0.005(D²H)^0.929 R² = 0.884	W = 0.021(D²H)^0.809 R² = 0.909	3.1-84.5
阔叶混交林 Broadleaved mixed forest	W = 0.045 (D²H)^0.874 R² = 0.953	W = 0.020 (D²H)^0.839 R² = 0.880	W = 0.010 (D²H)^0.780 R² = 0.848	W = 0.009 (D²H)^0.974 R² = 0.906	2.0-98.6
针阔混交林 Conifer-broadleaved mixed forest	W = 0.049(D²H)^0.870 R² = 0.955	W = 0.013(D²H)^0.867 R² = 0.817	W = 0.007(D²H)^0.860 R² = 0.843	W = 0.014(D²H)^0.874 R² = 0.891	2.0-98.6

	年数 Years	森林面积 Forest area (×10⁴ hm²)	土壤碳密度 Soil C density (×10⁶g C·hm^-2)	植被碳密度 Vegetation C density (×10⁶g C·hm^-2)	总碳密度 Total C density (×10⁶g C·hm^-2)	土壤碳 Soil C stocks (Tg C)	植被碳 Vegetation C stocks (Tg C)	总碳 Total C stocks (Tg C)
幼龄林 Young stand	0-20	136.7	81.5	68.9	150.4	111.4	94.2	205.6
中龄林 Middle stand	20-40	137.2	86.4	99.5	186.0	118.6	136.6	255.2
近熟林 Pre-mature stand	40-60	57.5	96.9	117.2	214.0	55.7	67.3	123.0
成熟林 Mature stand	60-80	27.4	76.8	262.3	339.1	21.1	71.9	92.9
过熟林 Over-mature stand	>80	8.1	69.8	395.1	464.9	5.7	32.1	37.8
总计 Total		367.0				312.4	402.1	714.5

	年数 Years	森林面积 Forest area (×10⁴ hm²)	土壤碳密度 Soil C density (×10⁶g C·hm^-2)	植被碳密度 Vegetation C density (×10⁶g C·hm^-2)	总碳密度 Total C density (×10⁶g C·hm^-2)	土壤碳 Soil C stocks (Tg C)	植被碳 Vegetation C stocks (Tg C)	总碳 Total C stocks (Tg C)
幼龄林 Young stand	0-20	136.7	81.5	68.9	150.4	111.4	94.2	205.6
中龄林 Middle stand	20-40	137.2	86.4	99.5	186.0	118.6	136.6	255.2
近熟林 Pre-mature stand	40-60	57.5	96.9	117.2	214.0	55.7	67.3	123.0
成熟林 Mature stand	60-80	27.4	76.8	262.3	339.1	21.1	71.9	92.9
过熟林 Over-mature stand	>80	8.1	69.8	395.1	464.9	5.7	32.1	37.8
总计 Total		367.0				312.4	402.1	714.5

森林类型 Forest type	植被碳密度 Vegetation C density (t·hm^-2)	土壤碳密度 Soil C density (t·hm^-2)
温带落叶阔叶林 Temperate deciduous broadleaf forests	126	121
温带针叶林 Temperate needle leaf forests	100	136
亚热带落叶阔叶林 Subtropical deciduous broadleaf forests	132	135
常绿-落叶阔叶混交林 Mixed evergreen-deciduous broadleaf forests	150	111
亚热带常绿阔叶林 Subtropical evergreen broadleaf forests	163	103
亚热带针叶林 Subtropical needle leaf forests	154	108