The evolution characteristics of soil pH in Guangxi in 1984-2019.

doi:10.13292/j.1000-4890.202411.008

Chinese Journal of Ecology ›› 2024, Vol. 43 ›› Issue (11): 3317-3323.doi: 10.13292/j.1000-4890.202411.008

The evolution characteristics of soil pH in Guangxi in 1984-2019.

LI Jinmei^1,2,3,4, HUANG Mei^1,2,3,4, KANG Jili⁵, LIU Wenqi⁵, HOU Xianda^1,2,3, WANG Shuojin^1,2,3, JIA Shugang^1,2,3, LIU Shutian^1,2,3*, HOU Yanlin^1,2,3*

(¹Guangxi Geographical Indication Crops Research Center of Big Data Mining and Experimental Engineering Technology, Nanning Normal University, Nanning 530001, China; ²Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation, Nanning Normal University, Nanning 530001, China; ³Key Laboratory of Environment Change and Resources Use in Beibu Gulf of Ministry of Education, Nanning Normal University, Nanning 530001, China; ⁴School of Geography and Planning, Nanning Normal University, Nanning 530001, China; ⁵Guangxi Soil Fertilizer Workstation, Nanning 530007, China).

Online:2024-11-10 Published:2024-11-11

Abstract

Abstract: Soil acidification reduces productivity. To explore the changes of soil pH in Guangxi between 1984 and 2019, geostatistics, dynamic degree and distribution index were used to analyze the sampling point data of the project and the long-term observation data from 2010 to 2019. The results showed that soil pH decreased from 1984 to 2019, and its distribution changed from uneven to relatively continuous. The area proportion of soil pH grade was as follows: grade 2 > grade 3 > grade 4 > grade 1 > grade 5 > grade 6. The soil pH was mainly composed of grade 2 and grade 3. The area of grade 2 and grade 3 accounted for 76.71% of total area in 1984 and 84.84% in 2019. In terms of change rate, grade 1 (-1.99%) and grade 5 (0.44%) showed the most rapid change. The dynamic degree was following an order of grade 1 > grade 6 > grade 5 > grade 2 > grade 3 > grade 4. The pH distribution index curve of grade 6 fluctuated significantly across different elevation regions.

Key words: soil pH, space-time evolution, geostatistics, Guangxi

LI Jinmei, HUANG Mei, KANG Jili, LIU Wenqi, HOU Xianda, WANG Shuojin, JIA Shugang, LIU Shutian, HOU Yanlin. The evolution characteristics of soil pH in Guangxi in 1984-2019.[J]. Chinese Journal of Ecology, 2024, 43(11): 3317-3323.

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The evolution characteristics of soil pH in Guangxi in 1984-2019.

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