甘肃省土地利用转变对碳储量变化的影响研究

doi:10.12118/j.issn.1000-6060.2024.040

干旱区地理 ›› 2024, Vol. 47 ›› Issue (12): 2075-2082.doi: 10.12118/j.issn.1000-6060.2024.040 cstr: 32274.14.ALG2024040

甘肃省土地利用转变对碳储量变化的影响研究

姜筱筱¹^,²^,³(), 李雪梅¹^,²^,³(), 韩惠¹^,²^,³, 许民⁴^,⁵^,⁶, 凌红波⁷

1.兰州交通大学测绘与地理信息学院，甘肃兰州 730070
2.甘肃省地理国情监测工程实验室，甘肃兰州 730070
3.地理国情监测技术应用国家地方联合工程研究中心，甘肃兰州 730070
4.兰州交通大学数理学院，甘肃兰州 730070
5.中国科学院西北生态环境资源研究院冰冻圈科学国家重点实验室，甘肃兰州 730000
6.中国科学院大学，北京 100049
7.中国科学院新疆生态与地理研究所，新疆干旱区水循环与水利用重点实验室，新疆乌鲁木齐 830011

收稿日期:2024-01-18 修回日期:2024-05-26 出版日期:2024-12-25 发布日期:2025-01-02
通讯作者: 李雪梅（1983-），女，博士，教授，主要从事气候变化及其影响研究. E-mail: lixuemei@mail.lzjtu.cn
作者简介:姜筱筱（2000-），男，硕士研究生，主要从事遥感科学与技术研究. E-mail: 12232094@stu.lzjtu.edu.cn
基金资助:
甘肃省教育厅高等学校创新基金项目(2022A-041);国家自然科学基金项目(42261026);国家自然科学基金项目(41971094);国家自然科学基金项目(42161025);国家自然科学基金项目(42104096);新疆干旱区水循环与水利用重点实验室开放基金(XJYS0907-2023-01)

Influence of land use transformation on carbon storage change in Gansu Province

JIANG Xiaoxiao¹^,²^,³(), LI Xuemei¹^,²^,³(), HAN Hui¹^,²^,³, XU Min⁴^,⁵^,⁶, LING Hongbo⁷

1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
2. Gansu Engineering Laboratory of Geographical Conditions Monitoring, Lanzhou 730070, Gansu, China
3. National and Local Joint Engineering Research Center of Geographical Monitoring Technology Application, Lanzhou 730070, Gansu, China
4. School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
5. State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China
6. University of Chinese Academy of Sciences, Beijing 100049, China
7. Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China

Received:2024-01-18 Revised:2024-05-26 Published:2024-12-25 Online:2025-01-02

摘要/Abstract

摘要：

陆地生态系统中的碳储量多少与全球气候危机之间存在密切关系。基于InVEST模型和ArcGIS软件并结合甘肃省三期（2000、2010年和2020年）土地利用数据，对甘肃省土地利用类型变化和碳储量多少进行动态评估与分析。结果表明：（1）2000—2020年未利用地和耕地面积明显减少，建设用地、草地、林地和水域面积呈增加趋势，土地类型的转入转出主要以草地和耕地之间的转换为主。（2）甘肃省2000—2020年碳储量累计增加331.24×10⁴ t，呈现先上升后下降的趋势。（3）未利用地转为耕地和草地转为林地对区域碳储量增加起促进作用，而制约区域碳储量增加的主要原因是耕地向建设用地的转换以及草地向未利用地的转换。研究结果可为甘肃省未来土地利用规划和生态建设提供参考。

关键词: 碳储量, 土地利用类型, InVEST模型, 甘肃省

Abstract:

There is a close relationship between the carbon stock in terrestrial ecosystems and the global climate crisis. Using the InVEST model and ArcGIS software, combined with land use data for Gansu Province, China across three phases (2000, 2010, and 2020), the dynamic changes in land use types and carbon stock were assessed and analyzed. The results indicate that: (1) The areas of unused land and arable land decreased significantly between 2000 and 2020, while construction land, grassland, forest land, and water bodies exhibited an increasing trend. Land type transitions within the province were primarily dominated by conversions between grassland and arable land. (2) The cumulative increase in carbon stock in Gansu Province from 2000 to 2020 amounted to 331.24×10⁴ t, following a trend of initial increase followed by a decline. (3) The conversion of unused land to arable land and grassland to forest land contributed to the enhancement of regional carbon stock, whereas the conversion of arable land to construction land and grassland to unused land posed significant constraints on the increase in regional carbon stock. This study provides a valuable reference for future land use planning and ecological restoration efforts in Gansu Province.

Key words: carbon stock, land use type, InVEST modeling, Gansu Province

姜筱筱, 李雪梅, 韩惠, 许民, 凌红波. 甘肃省土地利用转变对碳储量变化的影响研究[J]. 干旱区地理, 2024, 47(12): 2075-2082.

JIANG Xiaoxiao, LI Xuemei, HAN Hui, XU Min, LING Hongbo. Influence of land use transformation on carbon storage change in Gansu Province[J]. Arid Land Geography, 2024, 47(12): 2075-2082.

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土地利用类型	地上碳密度	地下碳密度	土壤有机碳密度	死亡有机物碳密度
耕地	1.10	15.00	91.10	0.74
林地	8.10	22.00	158.80	4.78
草地	6.70	16.40	83.90	1.83
水域	0.60	0.00	0.00	0.32
建设用地	0.50	0.00	0.00	0.00
未利用地	0.20	0.00	21.60	0.00

年份	耕地	林地	草地	水域	建设用地	未利用地
2000	65592.35	37654.03	142665.13	3302.68	3568.89	172736.68
2010	65054.49	38549.23	142976.28	3543.75	4311.77	171085.44
2020	63882.16	38516.77	143663.40	3840.51	5564.31	170030.48

指标	2000年	2010年	2020年
地上碳储量	13713.19	13802.49	13838.94
地下碳储量	41716.60	41882.28	41808.46
土壤有机碳储量	276556.41	277392.38	276621.47
死亡有机物碳储量	4906.59	4951.86	4955.16
总碳储量	336892.79	338029.01	337224.03
总碳储量变化量	-	1136.22	-804.98
总碳储量变化率/%	-	0.34	-0.24

甘肃省土地利用转变对碳储量变化的影响研究

Influence of land use transformation on carbon storage change in Gansu Province

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