Spatiotemporal Evolution of Ecosystem Carbon Sources/Sinks in Hebei Province from 2000 to 2020

doi:10.11988/ckyyb.20240528

Abstract

Abstract:

[Objective] Accurately estimating the carbon sources and sinks of ecosystems and exploring their spatiotemporal evolution patterns are of great significance for optimizing territorial space management and promoting the low-carbon transition in Hebei Province. [Methods] This study utilized energy consumption data, remote sensing data, carbon density data, water carbon flux data, and salt marsh and coastal aquaculture data to calculate the carbon emissions from energy consumption, terrestrial ecosystem carbon sinks, and water carbon fluxes in Hebei Province. Additionally, a scientific analysis of the degree of carbon neutrality was conducted. [Results] (1) The overall carbon emissions from energy consumption in Hebei Province showed a continuous upward trend from 2000 to 2019, with emissions in 2019 reaching approximately four times those of 2000, at an average annual growth rate of about 6.98%. (2) The total NEP (Net Ecosystem Production) in Hebei Province from 2000 to 2020 showed significant fluctuations but an overall upward trend. The interannual variations in carbon fluxes from inland waters were minimal, showing a slight increasing trend. Blue carbon from marine aquaculture demonstrated overall growth, increasing from 6 600 tons in 2000 to 35 600 tons in 2020. (3) A comprehensive analysis of the carbon sources and sinks in Hebei Province’s territorial space revealed that the total ecosystem carbon sinks in 2020 could offset approximately 3.54% of the carbon emissions from energy consumption. [Conclusion] This suggests that Hebei Province currently has a relatively low carbon neutrality capacity, below the national average (15%), and faces enormous pressure to reduce carbon emissions and increase carbon sinks.

Key words: carbon source, carbon sink, ecosystem, spatiotemporal evolution, carbon emission, NEP, Hebei Province

CLC Number:

ZHAO Yi-xing, QIE Xin, YANG Qing-feng. Spatiotemporal Evolution of Ecosystem Carbon Sources/Sinks in Hebei Province from 2000 to 2020[J]. Journal of Changjiang River Scientific Research Institute, 2025, 42(7): 77-85.

能源类型	单位热值		CH₄排放系数/ (kg·C·GJ^-1)	CO₂排放系数/ (kg·C·GJ^-1)	综合碳排放系数
能源类型	数值	单位	CH₄排放系数/ (kg·C·GJ^-1)	CO₂排放系数/ (kg·C·GJ^-1)	数值	单位
原煤	20 908	kJ/kg	0.75	25.8	0.54	kg/kg
洗精煤	26 344	kJ/kg	0.75	26.21	0.69	kg/kg
其他洗煤	9 409	kJ/kg	0.75	26.95	0.25	kg/kg
型煤	9 409	kJ/kg	0.75	26.6	0.25	kg/kg
煤矸石	9 409	kJ/kg	0.75	26.6	0.25	kg/kg
焦炭	28 435	kJ/kg	0.75	29.2	0.83	kg/kg
焦炉煤气	17 354	kJ/m³	0.75	12.1	0.21	kg/m³
高炉煤气	2 985	kJ/m³	0.75	70.8	0.21	kg/m³
转炉煤气	2 985	kJ/m³	0.75	70.8	0.21	kg/m³
其他煤气	16 970	kJ/m³	0.75	60.2	1.02	kg/m³
其他焦化产品	34 332	kJ/kg	2.25	26.6	0.91	kg/kg
原油	41 816	kJ/kg	2.25	20	0.83	kg/kg
汽油	43 070	kJ/kg	2.25	18.9	0.81	kg/kg
煤油	43 070	kJ/kg	2.25	19.6	0.84	kg/kg
柴油	42 652	kJ/kg	2.25	20.2	0.86	kg/kg
燃料油	41 816	kJ/kg	2.25	21.1	0.88	kg/kg
石脑油	37 681	kJ/kg	2.25	20	0.75	kg/kg
润滑油	37 681	kJ/kg	2.25	20	0.75	kg/kg
石蜡	37 681	kJ/kg	2.25	20	0.75	kg/kg
溶剂油	37 681	kJ/kg	2.25	20	0.75	kg/kg
石油沥青	37 681	kJ/kg	2.25	20	0.75	kg/kg
石油焦	37 681	kJ/kg	2.25	20	0.75	kg/kg
液化石油气	50 179	kJ/kg	0.75	17.2	0.86	kg/kg
炼厂干气	46 055	kJ/kg	0.75	15.7	0.72	kg/kg
其他石油制品	37 681	kJ/kg	2.25	20	0.75	kg/kg
天然气	38 931	kJ/m³	0.75	15.3	0.60	kg/m³
液化天然气	38 931	kJ/m³	0.75	15.3	0.60	kg/m³
热力	1	kJ/ kJ	0.75	26.95	0.00	kg/kg
电力	3 596	kJ/(kW·h)	0.75	26.95	0.10	kg/(kW·h)

能源类型	单位热值		CH₄排放系数/ (kg·C·GJ^-1)	CO₂排放系数/ (kg·C·GJ^-1)	综合碳排放系数
能源类型	数值	单位	CH₄排放系数/ (kg·C·GJ^-1)	CO₂排放系数/ (kg·C·GJ^-1)	数值	单位
原煤	20 908	kJ/kg	0.75	25.8	0.54	kg/kg
洗精煤	26 344	kJ/kg	0.75	26.21	0.69	kg/kg
其他洗煤	9 409	kJ/kg	0.75	26.95	0.25	kg/kg
型煤	9 409	kJ/kg	0.75	26.6	0.25	kg/kg
煤矸石	9 409	kJ/kg	0.75	26.6	0.25	kg/kg
焦炭	28 435	kJ/kg	0.75	29.2	0.83	kg/kg
焦炉煤气	17 354	kJ/m³	0.75	12.1	0.21	kg/m³
高炉煤气	2 985	kJ/m³	0.75	70.8	0.21	kg/m³
转炉煤气	2 985	kJ/m³	0.75	70.8	0.21	kg/m³
其他煤气	16 970	kJ/m³	0.75	60.2	1.02	kg/m³
其他焦化产品	34 332	kJ/kg	2.25	26.6	0.91	kg/kg
原油	41 816	kJ/kg	2.25	20	0.83	kg/kg
汽油	43 070	kJ/kg	2.25	18.9	0.81	kg/kg
煤油	43 070	kJ/kg	2.25	19.6	0.84	kg/kg
柴油	42 652	kJ/kg	2.25	20.2	0.86	kg/kg
燃料油	41 816	kJ/kg	2.25	21.1	0.88	kg/kg
石脑油	37 681	kJ/kg	2.25	20	0.75	kg/kg
润滑油	37 681	kJ/kg	2.25	20	0.75	kg/kg
石蜡	37 681	kJ/kg	2.25	20	0.75	kg/kg
溶剂油	37 681	kJ/kg	2.25	20	0.75	kg/kg
石油沥青	37 681	kJ/kg	2.25	20	0.75	kg/kg
石油焦	37 681	kJ/kg	2.25	20	0.75	kg/kg
液化石油气	50 179	kJ/kg	0.75	17.2	0.86	kg/kg
炼厂干气	46 055	kJ/kg	0.75	15.7	0.72	kg/kg
其他石油制品	37 681	kJ/kg	2.25	20	0.75	kg/kg
天然气	38 931	kJ/m³	0.75	15.3	0.60	kg/m³
液化天然气	38 931	kJ/m³	0.75	15.3	0.60	kg/m³
热力	1	kJ/ kJ	0.75	26.95	0.00	kg/kg
电力	3 596	kJ/(kW·h)	0.75	26.95	0.10	kg/(kW·h)

类别	种类	干重比/%	质量比重/%		含碳量/%
类别	种类	干重比/%	软组织	贝壳	软组织	贝壳
	贻贝	75.28	8.47	91.53	45.98	12.68
	扇贝	63.89	14.35	85.65	43.87	11.44
	蛏	70.48	3.26	96.74	44.99	13.24
	蛤	52.55	1.98	98.02	42.84	13.24
贝类	牡蛎	65.10	6.14	93.86	44.90	11.52
	蚶	64.21	11.41	88.59	45.86	11.51
	鲍	64.21	11.41	88.59	40.04	12.02
	螺	64.21	11.41	88.59	36.83	11.29
	江珧	64.21	11.41	88.59	40.73	13.16
藻类	海带	20.00			31.20
	裙带菜				28.81
	紫菜				41.96
	江蓠				24.50
	石花菜				26.37
	麒麟菜				30.36
	羊栖菜				30.36
	苔菜				30.36

类别	种类	干重比/%	质量比重/%		含碳量/%
类别	种类	干重比/%	软组织	贝壳	软组织	贝壳
	贻贝	75.28	8.47	91.53	45.98	12.68
	扇贝	63.89	14.35	85.65	43.87	11.44
	蛏	70.48	3.26	96.74	44.99	13.24
	蛤	52.55	1.98	98.02	42.84	13.24
贝类	牡蛎	65.10	6.14	93.86	44.90	11.52
	蚶	64.21	11.41	88.59	45.86	11.51
	鲍	64.21	11.41	88.59	40.04	12.02
	螺	64.21	11.41	88.59	36.83	11.29
	江珧	64.21	11.41	88.59	40.73	13.16
藻类	海带	20.00			31.20
	裙带菜				28.81
	紫菜				41.96
	江蓠				24.50
	石花菜				26.37
	麒麟菜				30.36
	羊栖菜				30.36
	苔菜				30.36

年份	河流碳通量/ (m·mol·m^-2·d^-1)	湖泊碳通量/ (m·mol·m^-2·d^-1)	河流碳排放量/t	湖泊碳排放量/t
1980	648.44	30.88	7 509.89	345.66
2010	406.14	35.47	5 818.09	789.20
年变化	-8.08	0.15	-56.39	14.78

Spatiotemporal Evolution of Ecosystem Carbon Sources/Sinks in Hebei Province from 2000 to 2020

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核算项目	总计
核算项目	C/(万t)	CO₂/(万t)
陆地生态系统碳汇	784.06	2 874.89
海洋蓝碳	16.44	60.28
内陆水体碳通量	-0.62	-2.27
能源碳排放	-22 623.98	-82 954.60

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