Carbon benefits evaluation of the artificial shelter forest in the Shiyanghe River Basin

doi:10.7522/j.issn.1000-694X.2020.00057

Journal of Desert Research ›› 2020, Vol. 40 ›› Issue (4): 197-205.DOI: 10.7522/j.issn.1000-694X.2020.00057

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Carbon benefits evaluation of the artificial shelter forest in the Shiyanghe River Basin

Xinyou Wang¹^,²(), Quanlin Ma¹(), Yaolin Wang¹

^1.State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou 730070, China
^2.Gansu Radio & TV University, Lanzhou 730030, China

Received:2020-01-03 Revised:2020-06-29 Online:2020-08-20 Published:2020-09-01
Contact: Quanlin Ma

Abstract

Abstract:

Artificial vegetation construction is considered effective options for carbon dioxide sequestration to mitigate the impact of climate change. Based on the CBP (Carbon Benefits Project) carbon measurement model, the efficiency of artificial shelter forest in Shiyanghe River Basin in carbon sequestration was studied using the secondary inventory data of forest resources in Gansu Province (2016). The results show that the total carbon storage of sand-fixing plantation in Shiyanghe River Basin is 0.81 Tg C, with a value of 203 million RMB. The annual carbon sequestration per hectare is 0.45 Mg, with a value of 113.13 RMB. The maximum carbon sequestration potential is 2.19 Tg C on the 0-100 years scale, with a value of 551 million RMB. The total carbon storage of oasis shelterbelt in Shiyang River Basin is 2.51 Tg C, with a value of 631 million RMB. The annual carbon sequestration per hectare is 5.2 Mg, with a value of 1307.28 RMB. The maximum carbon sequestration potential is 3.03 Tg C on the 0-50 years scale, with a value of 762 million RMB. On the 0-100 years scale, the carbon sequestration benefits of the sand-fixing plantation in Shiyang River basin changed significantly with the planting years. The carbon storage showed rapid growth (0-25 years), rapid decline (25-30 years), slow decline (35-100 years), with an upwardly unimodal-type change trend. The carbon sequestration benefits of the oasis shelterbelt in Shiyang River basin showed sustained growth. The death rate is the most important factor affecting carbon sequestration efficiency of the plantation in Shiyang River Basin. With the annual death rate dropped from the rates of 2.5% to 2%, 1% and 0, after 39 years, its carbon benefits are respectively 1.51, 2.54 and 3.56 times that of the original sand-fixing plantation in the 39th year. The management measures of Grain for Green Project can significantly improve the carbon sequestration efficiency of the plantation in Shiyang River Basin. With the Grain for Green Project progressing at the area of 66 667 hm² and 133 334 hm², after 39 years, its carbon reserves are respectively 6.27 and 25.59 times, its carbon density are respectively 2.50 and 6.44 times, its carbon sequestration rate are respectively 2.67 and 6.67 times that of the original sand-fixing plantation in the 39th year. Therefore, sand fixation afforestation is an effective measure to increase carbon sink of desert ecosystem. It is necessary to strengthen the management and protection of sand-fixing plantation and the restoration of degraded forest to maximize its carbon benefit and avoid becoming a typical carbon source in the future.

Key words: CBP (Carbon Benefits Project) carbon measurement model, carbon storage, carbon sequestration rate, sand-fixing plantation, artificial shelter forest

CLC Number:

S713

Xinyou Wang, Quanlin Ma, Yaolin Wang. Carbon benefits evaluation of the artificial shelter forest in the Shiyanghe River Basin[J]. Journal of Desert Research, 2020, 40(4): 197-205.

Figures/Tables 9

References 26

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林种类型		面积/hm²	占林种比例/%	占总人工防护林的比例/%
乔木林	沙枣	6 808.72	55.98	13.23
	杨属	3 771.67	31.01	7.33
	胡杨	559.26	4.60	1.09
	榆树	483.89	3.98	0.94
	其他乔木	540.04	4.44	1.05
灌木林	梭梭	31 644.22	80.56	61.51
	花棒	2 894.59	7.37	5.63
	柠条	1 382.43	3.52	2.69
	柽柳	1 866.8	4.75	3.63
	沙拐枣	720.57	1.83	1.40
	枸杞	269.15	0.69	0.52
	其他灌木	540.04	1.28	0.98

林种类型		面积/hm²	占林种比例/%	占总人工防护林的比例/%
乔木林	沙枣	6 808.72	55.98	13.23
	杨属	3 771.67	31.01	7.33
	胡杨	559.26	4.60	1.09
	榆树	483.89	3.98	0.94
	其他乔木	540.04	4.44	1.05
灌木林	梭梭	31 644.22	80.56	61.51
	花棒	2 894.59	7.37	5.63
	柠条	1 382.43	3.52	2.69
	柽柳	1 866.8	4.75	3.63
	沙拐枣	720.57	1.83	1.40
	枸杞	269.15	0.69	0.52
	其他灌木	540.04	1.28	0.98

种植年限/a	总碳储量/Mg	碳密度/(Mg·hm^-2)	固碳速率/(Mg·hm^-2·a^-1)	不确定度/%
10	-600 140	-13	-1.3	28
15	-900 208	-20	-1.3	26
20	-1 200 280	-26	-1.3	24
25	-2 195 448	-48	-1.9	17
30	-995 113	-22	-0.72	24
35	-892 566	-19	-0.55	23
39	-810 504	-18	-0.45	23
50	-584 770	-13	-0.25	23
60	-379 610	-8.2	-0.14	22
70	-174 529	-3.8	-0.05	22
80	30 638	0.67	0.01	22
90	235 794	5.1	0.06	21
100	440 947	9.6	0.1	21

种植年限/a	总碳储量/Mg	碳密度/(Mg·hm^-2)	固碳速率/(Mg·hm^-2·a^-1)	不确定度/%
10	-600 140	-13	-1.3	28
15	-900 208	-20	-1.3	26
20	-1 200 280	-26	-1.3	24
25	-2 195 448	-48	-1.9	17
30	-995 113	-22	-0.72	24
35	-892 566	-19	-0.55	23
39	-810 504	-18	-0.45	23
50	-584 770	-13	-0.25	23
60	-379 610	-8.2	-0.14	22
70	-174 529	-3.8	-0.05	22
80	30 638	0.67	0.01	22
90	235 794	5.1	0.06	21
100	440 947	9.6	0.1	21

种植年限/a	总碳储量/Mg	碳密度/(Mg·hm^-2)	固碳速率/(Mg·hm^-2·a^-1)	不确定度/%
10	-730 934	-60	-6.00	23
20	-1 461 874	-120	-6.00	18
30	-1 983 658	-163	-5.40	17
40	-2 505 442	-206	-5.20	17
50	-3 027 228	-249	-5.00	17

Carbon benefits evaluation of the artificial shelter forest in the Shiyanghe River Basin

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References 26

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年死亡率/%	总碳储量/Mg	碳密度/(Mg·hm^-2)	固碳速率/(Mg·hm^-2·a^-1)	不确定度/%
2.5	-810 504	-18	-0.45	23
2	-1 226 025	-27	-0.68	24
1	-2 056 905	-45	-1.1	24
0	-2 887 784	-63	-1.6	22

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