Integrated watershed ecosystem management: A case study of forest and water resources in the Bangtranoi and Huaisai watersheds within Sirindhorn International Environmental Park and adjacent areas Samakkee BOONYAWAT1*, Yutthaphong KHEEREEMANGKLA1, Somnimirt PUK-NGAM1, Supattra THUEKSATHIT1, Piyapong TONGDEENOK1, Naruemol KAEWJAMPA1, Sonjai HAVANOND2 and Areeporn SITTIYANPAIBOON2 1Department of Conservation, Faculty of Forestry, Kasetsart University, Bangkok Thailand 2Sirindhorn International Environmental Park, Cha-am, Phetchaburi Thailand *Corresponding author: fforskb@ku.ac.th Abstract-The aims of this study were: 1) gathering watershed resource information particularly on land use, soil, forest, water and socio-economics: 2) study integrated linkage relationship of watershed ecosystem and adjacent area and 3) formulation of guidelines for sustainable integrated watershed management with people participation. Studies of land use change, soil characteristics, soil erosion, forest resources (types, density, volume and biodiversity), stream flow and water quality and socio-economics in Bangtranoi (BTN) and Huaisai (HS) watershed were conducted. The results showed that the change of land use from 2009 to 2015 in both watersheds was mostly a change to village and community areas whereas forest and agriculture area showed decreases. The soil infiltration of BTN and HS showed very high rates with 31.52 and 30.91 cm./hr, respectively while, total N, Avail. P, Exch. K, Exch. Ca and OM were very low levels. On site soil erosion in BTN and HS was 20.29 and 7.18 tons/ha/yr., respectively. Furthermore, stream flow and water quality in both watersheds were investigated. Annual stream flow in BTN was 9.69 Million Cubic Meters (MCM) (16.35% of annual rainfall) which was higher than HS with just 2.63 MCM (14.32% of annual rainfall). The water quality of both watersheds was classified as type 3 of surface water quality standards. Forest types including the remaining forest of Dry Dipterocarp and mixed deciduous forest with crown cover 25% in BTN and 34% in HS. Some 123-150 tree species were found in both sites such as Shorea siamensis Miq., Lagerstroemia calyculata Kurz. and Pterocarpus macrocarpus Kurz. Socio-economic features of both watersheds were similar and the local people displayed a good understanding in fundamental forest law and natural resource conservation. Nevertheless, the response levels of people participation was found to be at a low to moderate level in both watersheds. Keywords: watershed ecosystem, integrated management, Phetchaburi Province 254 Proceedings of the International Conference on Climate Change, Biodiversity and Ecosystem Services for the 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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