气候变化及景观格局与生态系统碳储存的耦合关系——以祁连山为例

doi:10.13866/j.azr.2022.01.24

Abstract

Abstract:

Climate change and landscape pattern are closely related to the structure, function, and dynamic changes of an ecosystem. The Qilian Mountain Ecosystem (QLME) is an important ecological area in China. Based on multivariate data and using remote sensing and GIS technology combined with InVEST and GeoSOS-FLUS models, the technology and method of estimating carbon storage in the QLME was explored. Consequently, an estimation of carbon storage in the QLME was achieved. According to quantitative estimation and analysis, carbon storage in the QLME showed obvious spatial and temporal differences due to different landscape types. The highest QLME carbon storage was in grassland and woodland followed by in bare land. The carbon storage of cultivated land, wetland, construction land, and rural residential sites was low. From 1985 to 2018, QLME carbon storage increased overall by 4805.95 million tons with an annual growth rate of 38.43%. Grassland carbon storage accounted for more than half of the study area and its carbon storage increased at first before decreasing. Forest landscape carbon storage accounted for 11.31%-36.16% of total carbon storage had a wide range of variation. Based on the future RCP4.5 and RCP8.5 climate change scenarios, the carbon storage of the QLME tended to increase; average carbon storage was estimated at 3813.38 tons for 2050, which would represent a growth rate of 8.69% from the rate in 2018. This study is important for improving understanding of the carbon cycle and ecosystem stability.

Key words: Qilian Mountain Ecosystem(QLME), climate change scenario, carbon storage estimation techniques(CSET), ecosystem service value assessment technology, landscape pattern, model

WANG Ranghui,ZHAO Wenfei,PENG Qing,LIU Chunwei,ZHOU Limin,TIAN Chang. The relationship of climate change and landscape pattern with ecosystem carbon storage: A case study from the Qilian Mountains[J].Arid Zone Research, 2022, 39(1): 250-257.

Figures/Tables 8

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年份	碳储存总量/10⁴ t	平均碳储存/（t·km^-2）	变化率/%
1985	12506.18	2533.00	-
1990	12442.41	2520.08	-0.51
1995	12471.02	2525.88	0.23
2000	13301.62	2693.83	6.66
2005	14058.85	2847.53	5.69
2010	13785.72	2793.01	-1.94
2015	17334.58	3513.08	25.74
2018	17312.13	3508.53	-0.13

2018年	2050年
2018年	耕地	林地	草地	湿地	水体	建设用地	裸地	雪/冰	总计
耕地	88.24	0	1.96	0	0	0	9.80	0	100
林地	0	100	0	0	0	0	0	0	100
草地	0	8.79	90.97	0.01	0.06	0	0	0.18	100
湿地	0	2.04	0	83.67	2.04	0	12.24	0	100
水体	0	0	0	0	100	0	0	0	100
建设用地	0	0	0	0	0	100	0	0	100
裸地	0	1.17	1.09	0	0.04	0	95.67	2.03	100
雪/冰	0	0	0.24	0	0	0	21.38	78.39	100

The relationship of climate change and landscape pattern with ecosystem carbon storage: A case study from the Qilian Mountains

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