22-year dynamic analysis of vegetation cover in karst area: a case study in Guangxi, China
Karst area usually suffered from dry duo to its thin soil thickness, resulting in a sparse vegetation cover than other areas’, further ecological unbalance. This paper investigates the changes in vegetation cover over 22 years (2001–2022) for Guangxi, the largest karst area globally. With MOD13Q1 da...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-08-01
|
| Series: | International Journal of Digital Earth |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/17538947.2025.2497097 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849224334223081472 |
|---|---|
| author | Guoqing Zhou Xiao Zhou Tianyi Song Qusheng Li Yuefeng Wang Hongchao Fan Yufu Cai Haiyang Zhi Yongju Geng Ziqi Zhang Ertao Gao |
| author_facet | Guoqing Zhou Xiao Zhou Tianyi Song Qusheng Li Yuefeng Wang Hongchao Fan Yufu Cai Haiyang Zhi Yongju Geng Ziqi Zhang Ertao Gao |
| author_sort | Guoqing Zhou |
| collection | DOAJ |
| description | Karst area usually suffered from dry duo to its thin soil thickness, resulting in a sparse vegetation cover than other areas’, further ecological unbalance. This paper investigates the changes in vegetation cover over 22 years (2001–2022) for Guangxi, the largest karst area globally. With MOD13Q1 data products, Theil–Sen trend analysis and Mann–Kendall tests are combinedly applied to investigate the spatial–temporal variations of NDVI vs. human activities and climate change. A long-term observation to vegetation coverage dynamics has discovered: (1) The NDVI in Guangxi generally showed an upward trend, averaging an annual growth rate of 0.0074, particularly in 2012. Spatially, 94.44% of the areas showed an improvement trend, while only 3.08% experienced degradation. (2) Human activities and climate change positively impacted NDVI changes, with land-use transformations playing a crucial role. Temperature had a greater impact than precipitation. (3) Human activities were responsible for 72.7% of the NDVI changes, demonstrating that they were the main driving factor. These findings have sufficiently demonstrated that the effective environmental protection policy made by local government is correct and the insights for the mechanisms of influencing vegetation changes discovered in this paper can be used for local government’s policy-making. |
| format | Article |
| id | doaj-art-f08b667e733944d3a804c051d1ac35eb |
| institution | Kabale University |
| issn | 1753-8947 1753-8955 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Digital Earth |
| spelling | doaj-art-f08b667e733944d3a804c051d1ac35eb2025-08-25T11:31:47ZengTaylor & Francis GroupInternational Journal of Digital Earth1753-89471753-89552025-08-0118110.1080/17538947.2025.249709722-year dynamic analysis of vegetation cover in karst area: a case study in Guangxi, ChinaGuoqing Zhou0Xiao Zhou1Tianyi Song2Qusheng Li3Yuefeng Wang4Hongchao Fan5Yufu Cai6Haiyang Zhi7Yongju Geng8Ziqi Zhang9Ertao Gao10Guangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaGuangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaGuangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaGuangxi Zhuang Autonomous Region Institute of Natural Resources Remote Sensing, Nanning, People’s Republic of ChinaGuangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaDepartment of Civil and Environmental Engineering Faculty of Engineering, Norwegian University of Science and Technology, Trondheim, NorwayGuangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaGuangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaGuangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaGuangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaGuangxi Key Laboratory of Spatial Information and Geomatics, College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, People’s Republic of ChinaKarst area usually suffered from dry duo to its thin soil thickness, resulting in a sparse vegetation cover than other areas’, further ecological unbalance. This paper investigates the changes in vegetation cover over 22 years (2001–2022) for Guangxi, the largest karst area globally. With MOD13Q1 data products, Theil–Sen trend analysis and Mann–Kendall tests are combinedly applied to investigate the spatial–temporal variations of NDVI vs. human activities and climate change. A long-term observation to vegetation coverage dynamics has discovered: (1) The NDVI in Guangxi generally showed an upward trend, averaging an annual growth rate of 0.0074, particularly in 2012. Spatially, 94.44% of the areas showed an improvement trend, while only 3.08% experienced degradation. (2) Human activities and climate change positively impacted NDVI changes, with land-use transformations playing a crucial role. Temperature had a greater impact than precipitation. (3) Human activities were responsible for 72.7% of the NDVI changes, demonstrating that they were the main driving factor. These findings have sufficiently demonstrated that the effective environmental protection policy made by local government is correct and the insights for the mechanisms of influencing vegetation changes discovered in this paper can be used for local government’s policy-making.https://www.tandfonline.com/doi/10.1080/17538947.2025.2497097VegetationNDVIhuman activitieskarstclimate change |
| spellingShingle | Guoqing Zhou Xiao Zhou Tianyi Song Qusheng Li Yuefeng Wang Hongchao Fan Yufu Cai Haiyang Zhi Yongju Geng Ziqi Zhang Ertao Gao 22-year dynamic analysis of vegetation cover in karst area: a case study in Guangxi, China International Journal of Digital Earth Vegetation NDVI human activities karst climate change |
| title | 22-year dynamic analysis of vegetation cover in karst area: a case study in Guangxi, China |
| title_full | 22-year dynamic analysis of vegetation cover in karst area: a case study in Guangxi, China |
| title_fullStr | 22-year dynamic analysis of vegetation cover in karst area: a case study in Guangxi, China |
| title_full_unstemmed | 22-year dynamic analysis of vegetation cover in karst area: a case study in Guangxi, China |
| title_short | 22-year dynamic analysis of vegetation cover in karst area: a case study in Guangxi, China |
| title_sort | 22 year dynamic analysis of vegetation cover in karst area a case study in guangxi china |
| topic | Vegetation NDVI human activities karst climate change |
| url | https://www.tandfonline.com/doi/10.1080/17538947.2025.2497097 |
| work_keys_str_mv | AT guoqingzhou 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT xiaozhou 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT tianyisong 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT qushengli 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT yuefengwang 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT hongchaofan 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT yufucai 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT haiyangzhi 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT yongjugeng 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT ziqizhang 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina AT ertaogao 22yeardynamicanalysisofvegetationcoverinkarstareaacasestudyinguangxichina |