Research on climate change based on carbonate porosity analysis in Jinping, China

RESEARCH ARTICLE Research on climate change based on carbonate porosity analysis in Jinping, China Honghai KuangID1*, Jinghao Li1, Hailong Zuo2, Xi Ye1 1 School of Geographic Science, Southwest University, Beibei, Chongqing, PR China, 2 School of Tourism and Environment, Zhangjiakou University, Zhangjiakou, Hebei, PR China * hhkuang@swu.edu.cn Abstract In this paper, climate change in the Jinping area is investigated. The climate change trend in the Jinping area is studied by plotting the porosity value of the carbonate rocks as a curve. By comparing the curve established using the climate change data from published articles, it is found that the B value curve obtained using the saddle line is the closest to the curve established using the climate change data from published articles. This shows that the car- bonate porosity in the Jinping area obtained using an image analysis technique can be used for climate change research. 1 Introduction At present, many studies have been conducted on climate change. These studies started with loess, corals, tree rings, ice cores and stalagmites and effectively conducted climate change research. In areas where carbonate rocks are widely distributed, climate change studies cannot ignore the impact of karstification. The relationship between karst and climate is important. Under warm and humid climate conditions, the speed of karst development will be faster [1]. Therefore, the impact of karstification on climate change is an important topic in climate

change research. The effects of karstification on climate change are commonly studied using stalagmites. However, the porosity of carbonate rocks is also an important karst research parameter, and it is also closely related to climate change. If the karst development rate of a carbonate formation increases, the porosity of the carbonate should also increase. If the karst development rate of a carbonate formation decreases, the porosity of the carbonate should also decrease. If the porosity of the carbonate rocks in the different strata in the Jinping area is used as the node of the curve to establish the porosity change curve, it should also reflect the climate change trend in the Jinping area. When it is also difficult to conduct climate change research on loess, sediments, and other materials locally, the carbonate porosity is a good parameter for studying climate change. The cost of collecting carbonate samples is lower than that of collect- ing stalagmites, and the processing and analysis costs are also lower than those for stalagmites. Therefore, the porosity of carbonate samples is a good tool for climate change research. If the porosity of carbonate rock samples is studied using the traditional carbonate rock research method (TCRM), it takes a long time. If climate change studies have to produce results within PLOS ONE PLOS ONE | https://doi.org/10.1371/journal.pone.0281630 March 30, 2023 1 / 21 a1111111111 a1111111111 a1111111111 a1111111111 a1111111111 OPEN ACCESS Citation: Kuang H, Li J, Zuo H, Ye X (2023) Research on climate change based on carbonate

porosity analysis in Jinping, China. PLoS ONE 18(3): e0281630. https://doi.org/10.1371/journal. pone.0281630 Editor: Jun Yang, Northeastern University (Shenyang China), CHINA Received: August 29, 2022 Accepted: January 30, 2023 Published: March 30, 2023 Copyright: © 2023 Kuang et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Data Availability Statement: All data files are available from:https://doi.org/10.5281/zenodo. 6568661. Funding: The first author was funded on 2022-12- 22: Key Laboratory of Land satellite Remote sensing Application, Ministry of Natural Resources of the People’s Republic of China(Grant No. KLSMNR-G202220). If this paper is accepted, the APC of the paper will be paid in this project. Competing interests: The authors have declared that no competing interests exist.