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- Title
Spatiotemporal variation of soil pH in Guangdong Province of China in past 30 years.
- Authors
Guo Zhi-Xing; Wang Jing; Chai Min; Chen Ze-Peng; Zhan Zhen-Shou; Zheng Wu-Ping; Wei Xiu-Guo
- Abstract
Based on the 1980s' soil inventory data and the 2002-2007 soil pH dat a of Guangdong Province, the spatiotemporal variation of soil pH in the Province in past 30 years was studied. In the study period, the spatial distribution pattern of soil pH in the Province had less change (mainly acidic), except that in Pearl River Delta and parts of Qingyuan and Shaoguan (weak alkaline). The overall variation of soil pH was represented as acidification, with the average pH value changed from 5.70 to 5.44. Among the soil types in the Province, alluvial soil had an increased pH, lateritic red soil, paddy soil, and red soil had a large decrement of pH value, and lime soil was most obvious in the decrease of pH value and its area percentage. The soil acidification was mainly induced by soil characteristics, some natural factors such as acid rain, and human factors such as unreasonable fertilization and urbanization. In addition, industrialization and mining increased the soil pH in some areas.
- Subjects
SOIL acidification; FLUVISOLS; RED soils; ACID rain; PLANT fertilization; URBANIZATION; INDUSTRIALIZATION
- Publication
Yingyong Shengtai Xuebao, 2011, Vol 22, Issue 2, p425
- ISSN
1001-9332
- Publication type
Article