The measurements of wood density of different species from
the lowland Dipterocarp forests can be useful to complement the
proposed methodology for estimating carbon stock change. In
addition, for several of the species reported here no wood density
values have previously been published. In the GPG, only a single
value for wood density is given for certain species (see Appendix
3A.1. of GPG). With respect to the GPG methodology for estimating
carbon stock change, the major source of uncertainty for
estimating carbon stock using the default method is related to
the applicability of these parameters for the diverse age and
composition structure of specific stands (IPCC, 2003). Thus, the
various values of wood density from different characteristics of
forests must be considered. As an example, in this study the wood
density of Dipterocarpus grandiflorus is 0.56 g/cm3 for a DBH of
18.8 cm and 0.75 g/cm3 for a DBH of 44 cm (Appendix A), while in
the GPG the wood density of this species is 0.62 g/cm3
, without any
indication of the diameter.
The measurements of wood density of different species fromthe lowland Dipterocarp forests can be useful to complement theproposed methodology for estimating carbon stock change. Inaddition, for several of the species reported here no wood densityvalues have previously been published. In the GPG, only a singlevalue for wood density is given for certain species (see Appendix3A.1. of GPG). With respect to the GPG methodology for estimatingcarbon stock change, the major source of uncertainty forestimating carbon stock using the default method is related tothe applicability of these parameters for the diverse age andcomposition structure of specific stands (IPCC, 2003). Thus, thevarious values of wood density from different characteristics offorests must be considered. As an example, in this study the wooddensity of Dipterocarpus grandiflorus is 0.56 g/cm3 for a DBH of18.8 cm and 0.75 g/cm3 for a DBH of 44 cm (Appendix A), while inthe GPG the wood density of this species is 0.62 g/cm3, without anyindication of the diameter.
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The measurements of wood density of different species from
the lowland Dipterocarp forests can be useful to complement the
proposed methodology for estimating carbon stock change. In
addition, for several of the species reported here no wood density
values have previously been published. In the GPG, only a single
value for wood density is given for certain species (see Appendix
3A.1. of GPG). With respect to the GPG methodology for estimating
carbon stock change, the major source of uncertainty for
estimating carbon stock using the default method is related to
the applicability of these parameters for the diverse age and
composition structure of specific stands (IPCC, 2003). Thus, the
various values of wood density from different characteristics of
forests must be considered. As an example, in this study the wood
density of Dipterocarpus grandiflorus is 0.56 g/cm3 for a DBH of
18.8 cm and 0.75 g/cm3 for a DBH of 44 cm (Appendix A), while in
the GPG the wood density of this species is 0.62 g/cm3
, without any
indication of the diameter.
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การวัดความหนาแน่นของไม้ชนิดต่าง ๆ จาก
ที่ลุ่มป่าเต็งรังที่สามารถเป็นประโยชน์ในการเสริม
เสนอวิธีการประเมินการเปลี่ยนแปลงหุ้นคาร์บอน ใน
นอกจากนี้หลายชนิดของรายงานนี้ไม่ค่า
ความหนาแน่นของเนื้อไม้ก่อนหน้านี้ได้รับการตีพิมพ์ ในงาน มีเพียงเดียว
ค่าความหนาแน่นของเนื้อไม้ให้บางชนิด ( ดูภาคผนวก
3a 1 ของงาน ) With respect to the GPG methodology for estimating
carbon stock change, the major source of uncertainty for
estimating carbon stock using the default method is related to
the applicability of these parameters for the diverse age and
composition structure of specific stands (IPCC, 2003). Thus, the
various values of wood density from different characteristics of
forests must be considered. As an example, in this study the wood
density of Dipterocarpus grandiflorus is 0.56 g/cm3 for a DBH of
18.8 cm and 0.75 g/cm3 for a DBH of 44 cm (Appendix A), while in
the GPG the wood density of this species is 0.62 g/cm3
, without any
indication of the diameter.
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