04587nas|a2200493 i 4500 20260818112525.0 040820s2003 th u m rtt 00| a1eng d .b11937361 AIT Thesis no.SR-03-12 Supannika Potithep Estimation of Net Primary Productivity (NPP) using remote sensing and local parameters in Thailand Pathum Thani, Thailand : Asian Institute of Technology, 2003 82 leaves Thesis ; no. SR-03-12 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Advanced Technologies Thesis (M. Sc.) - Asian Institute of Technology, 2003 Net Primary Productivity (NPP) is a vital element to measure the carbon absorption by the plants. NPP needs to be estimated at national scale to toward actual interpretation of Kyoto Protocol to mitigate climate change caused by C02 increase. It can be identified as the carbon absorption level at each country. NPP estimation in Thailand is computed based on Production Efficiency Model (PEM). PEM is modified to consider local parameters; sunshine duration which is used to generate PAR image. FPAR is derived from NDVI image using a linear function. NPP estimation result is obtained by the multiplication of APAR image, which is calculated from FPAR and PAR, and the conversion efficiency. The result of NPP estimation is shown in terms of land cover types. The statistical analysis is used to investigate NPP pattern at each land cover types, and to carry out the sensitivity analysis between NPP estimation and input parameters. As well, NPP estimation results is analyzed the relation with meteorological conditions in study field area. Mean NPP of Thailand was estimated as 1,724 g/m2/year or 0.88 Gton/year. The forest area has shown NPP value of 2,346 g/m2/year or 0.31 Gton/year. Also the agriculture area has shown NPP value of 1,432 g/m2/year or 0.28 Gton/year. Based on NPP estimation in Thailand, it was found that NPP pattern of forest has almost high value over the year, and it is stable. For NPP pattern of agriculture area, it has shown low value during May to June and October to November. NPP value has shown high value in February and March and July to August. NPP of forest plantation has high positive correlation with PAR at each age of forest. However, NPP of agriculture has strong positive conelation with FPAR. NPP of forest plantation in the field area and meteorological conditions such as sunshine duration and evaporation have some correlation. However, temperature, rainfall and relative humidity do not have any relation with NPP of forest plantation. Remote sensing Thailand Forests and forestry Thailand Remote sensing Honda, Kiyoshi, Chairperson Tripathi, Nitin Kumar, Examination Committee Borne, Frederic, Examination committee Suree Bhumibhamon, Examination committee National Space Development Agency of Japan (NASDA), Scholarship donor Asian Institute of Technology. Thesis ; no. SR-03-12 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B08868 .b11937361 mnait u 240821 0 030820 m a u 0 000:001:PDF:b1193736:001942:0:0:0:0:0:0 Abstract--AIT Thesis no.SR-03-12 n mnait mnait mnarc mnarc mnarc 20 40 Barcode : 30050120694012 CREATED : 2004-08-20 RECORD # : i12412466 LPATRON : 1017630 LCHKIN : 2010-02-06 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 15 TOT RENEW : 3 Barcode : 30050120694160 CREATED : 2004-08-20 RECORD # : i12412478 LPATRON : 1017630 LCHKIN : 2011-07-01 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 18 TOT RENEW : 6 Barcode : 30050120693105 CREATED : 2015-10-02 RECORD # : i12836138 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160022777 CREATED : 2016-01-04 RECORD # : i1291955x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121018013 CREATED : 2020-10-07 RECORD # : i1328146x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 40256 40256 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.SR-03-12 30050120694012 2026-08-18 11:25:25 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.SR-03-12 30050120694160 2026-08-18 11:25:25 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 50.00 0 AIT Thesis no.SR-03-12 30050120693105 2026-08-18 11:25:25 3 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.SR-03-12 30050160022777 2026-08-18 11:25:25 1 2026-08-18 40 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.SR-03-12 30050121018013 2026-08-18 11:25:25 4 2026-08-18 20