Table 4 On-site soil erosion rate in Bangtranoi (BTN) and Huaisai (HS) Watershed Factor Unit Watershed Average BTN HS R-factor 144.266 140.191 142.229 K-factor 0.196 0.168 0.182 LS-factor 6.71 3.176 4.943 C-factor 0.133 0.121 0.127 P-factor 0.802 0.791 0.797 A Tons/ha/yr 20.286 7.178 13.723 A Tons/rai/yr 3.246 1.149 2.198 Rate Moderate Low Moderate 4.3 Forest resource Remaining forests covered approximately 25 and 34% for BTN and HS watershed, respectively. Forest types were mixed deciduous with dry dipterocarp forest, reforestation, beach, and mangrove forest and approximately 150 tree species were identified and can be characterized as follows (Table 5): Mixed deciduous forest had an average crown cover of 40-50%; 123 species were found. Shorea siamensis Miq., Lagerstroemia calyculata Kurz. and Pterocarpus macrocarpus Kurz. are dominant species. Average stand density was 368 trees/hectare; average tree volume was 38.59 m3/ha and index of diversity was 22.28. A comparison with the previous study conducted in 2007 (Kasetsart University Report) found that the forest condition and ecology showed little change between 2007 and 2015. Proceedings of the International Conference on Climate Change, Biodiversity and Ecosystem Services for the 261 Sustainable Development Goals (SDGs): Policy and Practice 27-29 June 2016, Cha-am, Phetchaburi, Thailand
Proceedings of International Conference on Climate Change, Biodiversity and Ecosystem Services for the Sustainable Development Goals : Policy and Practice 27-29 June 2016 at the Sirindhorn International Environmental Park, Cha-am, Phetchaburi, Thailand
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