Effect of Acacia mangium willd. plantation in tin-mine soils on yield and soil characteristics at Bangmuang forestry student training station, Takuapa, Pangnga
2002
Chongrak Wachrinrat(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Forestry. Department of Silviculture) | Pongsak Sahunalu(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Forestry. Department of Silviculture) | Witchaphart Sungpalee(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Forestry. Department of Silviculture) | Sermpong Nualngam(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Forestry. Department of Silviculture) | Porntep Meunpong(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Forestry. Department of Silviculture) | Rabieb Srikongpan(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Forestry. Department of Silviculture) | Lopachoke Thawornwong(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Forestry. Department of Forest Engineering) | Bunvong Thaiutsa(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Forestry. Department of Silviculture)
Study on effect of 14-year-old Acacia mangium willd. plantation in tin-mine soils on yield and soil characteristics at Bang Muang Forestry student training station, Takuapa, Pangnga was investigated in clayey and gravelly sandy mine soils. The results showed that height growth, girth and yield in term of volume, biomass and fresh weight in the different soil texture had higher than other sites approximately 2-6 times. Fresh weight showed 407.5 and 385.0 ton/ha for clayey and gravelly sandy mine soil, respectively. Considering impact of plantation on soil characteristics, the increasing of various soil nutrients occurred only at the surface soils, because the high amount of litterfall which were leaves, branches and other fractions were decomposed and added to the soil surface. In contrast, the decreasing of various nutrients were found in the subsurface soils. It might due to the low content of initial soil nutrients and nutrient uptakes were occurred for biomass production by trees. In addition, the leaching might be occurred and soil nutrients were leached into the deeper layer and loss from the subsurface soils due to the high amount of total rainfall in this area. However, A. manguim is one of the interesting trees for extension in such these degraded areas.
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