沱江流域土地利用碳平衡与人类活动强度的关系

张文英; 高雪松; 王启

doi:10.13961/j.cnki.stbctb.2023.03.039

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沱江流域土地利用碳平衡与人类活动强度的关系

试验研究

- 沱江流域土地利用碳平衡与人类活动强度的关系
- Relationship Between Land Use Carbon Balance and Human Activity Intensity in Tuojiang River Basin
- 水土保持通报 2023年43卷第3期页码：349-356
- 作者机构：
  
  1. 四川农业大学资源学院,四川,成都,610000
  2. 自然资源部耕地资源调查监测与保护利用重点实验室,四川,成都,610000
- 作者简介：
- 基金信息：
  
  四川省科技厅国际合作项目“沱江流域近百年农田土壤有机碳动态模拟研究”(2021YFH0121)
- DOI：10.13961/j.cnki.stbctb.2023.03.039
  中图分类号： X171.1;F301.24
- 纸质出版：2023
- 稿件说明：
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张文英, 高雪松, 王启. 沱江流域土地利用碳平衡与人类活动强度的关系[J]. 水土保持通报, 2023,43(3):349-356.

Zhang Wenying, Gao Xuesong, Wang Qi. Relationship Between Land Use Carbon Balance and Human Activity Intensity in Tuojiang River Basin[J]. Bulletin of Soiland Water Conservation, 2023, 43(3): 349-356.
张文英, 高雪松, 王启. 沱江流域土地利用碳平衡与人类活动强度的关系[J]. 水土保持通报, 2023,43(3):349-356. DOI： 10.13961/j.cnki.stbctb.2023.03.039.

Zhang Wenying, Gao Xuesong, Wang Qi. Relationship Between Land Use Carbon Balance and Human Activity Intensity in Tuojiang River Basin[J]. Bulletin of Soiland Water Conservation, 2023, 43(3): 349-356. DOI： 10.13961/j.cnki.stbctb.2023.03.039.

摘要

[目的

]

研究土地利用碳平衡与人类活动强度间的协同关系，为沱江流域的区域协同碳减排规划及实现中国“碳达峰、碳中和”目标提供参考。[方法

]

基于2000—2020年土地利用及社会经济数据，使用碳排放经济贡献系数、碳生态承载系数、人类活动强度指标，耦合协调度模型及回归分析方法，核算了沱江流域土地利用碳排放量并分析了土地利用碳平衡与人类活动强度的时空演变特征及其协同关系。[结果

]

研究表明，2000—2020年沱江流域碳排放量增加了5.13×10

t，其中建设用地碳排放量占90%以上；碳吸收量变化不大，主要来自林地，呈现先减后增的趋势；净碳排放增长率呈下降趋势。各区县的土地利用碳平衡协调度均在提升，但70%以上的区域处于失调衰退状态。沱江流域人类活动强度整体处于中等强度水平，空间上从北向南呈现“低—高—低—高”的格局。[结论

]

人类活动强度与人均GDP、人均碳排放均存在显著的正相关关系。土地利用碳平衡协调度与人类活动强度的负相关关系随着技术进步与能源利用效率的提高而降低。提高碳汇能力与碳生产力是改善区域土地利用碳平衡协调水平的有效途径。

Abstract

[Objective] The synergistic relationship between land use carbon balance and human activity intensity were studied in order to provide a reference for regional collaborative carbon emission reduction planning in the Tuojiang River basin

and thereby meet the goal of "carbon peak and carbon neutrality" in China.[Methods] Using land use and socio-economic data from 2000 to 2020

carbon emission economic contribution coefficient

carbon ecological carrying coefficient

human activity intensity indicators

a coupled coordination model

and regression analysis

we calculated carbon emissions from land use in the Tuojiang River basin. We then analyzed the spatiotemporal evolution characteristics and synergistic relationship between land use carbon balance and human activity intensity.[Results] Carbon emissions in the Tuojiang River basin increased by 5.13×107 t from 2000 to 2020

with construction land accounting for over 90% of carbon emissions. The small change in carbon absorption mainly resulted from forest land showing a change pattern of initially decreasing and then increasing. The growth rate of net carbon emissions showed a downward trend. The coordination of land use carbon balance in each district and county was improving

but more than 70% of the region was in a state of imbalance and decline. The overall intensity of human activities in the Tuojiang River basin was at a moderate level

with a spatial pattern of "low-high-low-high" from north to south.[Conclusion] There was a significant positive correlation between human activity intensity and per capita GDP and per capita carbon emissions. The negative correlation between land use carbon balance coordination and human activity intensity decreased with technological progress and increased energy utilization efficiency. Improving carbon sequestration capacity and carbon productivity is an effective way to improve the coordination level of regional land use carbon balance. The results of this study provide a reference for regional collaborative carbon emission reduction planning in the Tuojiang River basin.

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