Trend Analysis of Rainfall Erosivity in Liaoning Province (2003-2022) using the Mann-Kendall Test
To investigate the spatiotemporal dynamics of rainfall and its erosivity in Liaoning Province under a changing climate, this study utilized daily and monthly precipitation data from 2003 to 2022. A simplified daily rainfall erosivity model, distinguishing between cold and warm seasons, was applied i...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2025-01-01
|
| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/30/e3sconf_epemr2025_02019.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849730445000835072 |
|---|---|
| author | Han Yu Zhao Lian |
| author_facet | Han Yu Zhao Lian |
| author_sort | Han Yu |
| collection | DOAJ |
| description | To investigate the spatiotemporal dynamics of rainfall and its erosivity in Liaoning Province under a changing climate, this study utilized daily and monthly precipitation data from 2003 to 2022. A simplified daily rainfall erosivity model, distinguishing between cold and warm seasons, was applied in conjunction with the Mann-Kendall trend test and the Theil-Sen slope estimator to systematically quantify the spatiotemporal heterogeneity of rainfall and associated erosivity. Over the study period, annual rainfall and rainfall erosivity in Liaoning Province exhibited no statistically significant directional trends (P > 0.05). However, rainfall amount emerged as a critical determinant of erosivity; linear regression analysis revealed a strong positive correlation between annual average rainfall erosivity and annual average rainfall amount (R² = 0.565, P < 0.01), confirming rainfall quantity as a key predictor of erosive potential. These findings offer a scientific foundation for dynamic monitoring and mitigation strategies targeting regional soil erosion. |
| format | Article |
| id | doaj-art-71b4cef176964781b20fdadd3f095c0a |
| institution | DOAJ |
| issn | 2267-1242 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj-art-71b4cef176964781b20fdadd3f095c0a2025-08-20T03:08:52ZengEDP SciencesE3S Web of Conferences2267-12422025-01-016300201910.1051/e3sconf/202563002019e3sconf_epemr2025_02019Trend Analysis of Rainfall Erosivity in Liaoning Province (2003-2022) using the Mann-Kendall TestHan Yu0Zhao Lian1College of Environmental Science and Engineering, Liaoning Technical UniversityCollege of Environmental Science and Engineering, Liaoning Technical UniversityTo investigate the spatiotemporal dynamics of rainfall and its erosivity in Liaoning Province under a changing climate, this study utilized daily and monthly precipitation data from 2003 to 2022. A simplified daily rainfall erosivity model, distinguishing between cold and warm seasons, was applied in conjunction with the Mann-Kendall trend test and the Theil-Sen slope estimator to systematically quantify the spatiotemporal heterogeneity of rainfall and associated erosivity. Over the study period, annual rainfall and rainfall erosivity in Liaoning Province exhibited no statistically significant directional trends (P > 0.05). However, rainfall amount emerged as a critical determinant of erosivity; linear regression analysis revealed a strong positive correlation between annual average rainfall erosivity and annual average rainfall amount (R² = 0.565, P < 0.01), confirming rainfall quantity as a key predictor of erosive potential. These findings offer a scientific foundation for dynamic monitoring and mitigation strategies targeting regional soil erosion.https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/30/e3sconf_epemr2025_02019.pdf |
| spellingShingle | Han Yu Zhao Lian Trend Analysis of Rainfall Erosivity in Liaoning Province (2003-2022) using the Mann-Kendall Test E3S Web of Conferences |
| title | Trend Analysis of Rainfall Erosivity in Liaoning Province (2003-2022) using the Mann-Kendall Test |
| title_full | Trend Analysis of Rainfall Erosivity in Liaoning Province (2003-2022) using the Mann-Kendall Test |
| title_fullStr | Trend Analysis of Rainfall Erosivity in Liaoning Province (2003-2022) using the Mann-Kendall Test |
| title_full_unstemmed | Trend Analysis of Rainfall Erosivity in Liaoning Province (2003-2022) using the Mann-Kendall Test |
| title_short | Trend Analysis of Rainfall Erosivity in Liaoning Province (2003-2022) using the Mann-Kendall Test |
| title_sort | trend analysis of rainfall erosivity in liaoning province 2003 2022 using the mann kendall test |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/30/e3sconf_epemr2025_02019.pdf |
| work_keys_str_mv | AT hanyu trendanalysisofrainfallerosivityinliaoningprovince20032022usingthemannkendalltest AT zhaolian trendanalysisofrainfallerosivityinliaoningprovince20032022usingthemannkendalltest |