Fig. 4

Four photos show soil samples taken at different soil types on 13 February 2017 under sunshine condition. Detail characteristics of each point are described as follows: a MP01 is paddy rice field after harvest with 6 m elevation; ,b L11 is of former use for aquaculture for shrimp at 5 m elevation; c MP05 is land use to grow banana surrounded by paddy field at 5 m elevation; and d P9 is paddy rice field at harvest time at 3 m elevation