Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam tr\u00e2n tr\u1ecdng gi\u1edbi thi\u1ec7u lu\u1eadn \u00e1n Ti\u1ebfn s\u0129 \u00a0v\u1ec1 \u0111\u1ec1 \u00a0t\u00e0i : “X\u00e2y d\u1ef1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 c\u1ed9ng \u0111\u1ed3ng \u1ee9ng d\u1ee5ng trong \u0111o t\u00ednh gi\u00e1m s\u00e1t cacbon r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh \u1edf T\u00e2y Nguy\u00ean”.
\nChuy\u00ean ng\u00e0nh: L\u00e2m sinh; M\u00e3 s\u1ed1: 62 62 02 05.
\nH\u1ecd v\u00e0 t\u00ean NCS: Ph\u1ea1m Tu\u1ea5n Anh
\nH\u1ecd v\u00e0 t\u00ean c\u00e1n b\u1ed9 h\u01b0\u1edbng d\u1eabn:\u00a0 PGS.TS B\u1ea3o Huy
\nC\u01a1 s\u1edf \u0111\u00e0o t\u1ea1o: Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam.<\/p>\n
T\u00f3m t\u1eaft nh\u1eefng k\u1ebft lu\u1eadn m\u1edbi c\u1ee7a lu\u1eadn \u00e1n<\/strong><\/p>\n – Ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft l\u1eadp m\u00f4 h\u00ecnh sinh kh\u1ed1i d\u1ea1ng power phi tuy\u1ebfn t\u00ednh Maximum Likelihood c\u00f3 tr\u1ecdng s\u1ed1, c\u00f3 x\u00e9t \u0111\u1ebfn \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 l\u00e2m ph\u1ea7n cho \u0111\u1ed9 tin c\u1eady cao h\u01a1n ph\u01b0\u01a1ng ph\u00e1p tuy\u1ebfn t\u00ednh logarit b\u00ecnh ph\u01b0\u01a1ng t\u1ed1i thi\u1ec3u. Vi\u1ec7c r\u00fat m\u1eabu ng\u1eabu nhi\u00ean v\u1edbi 70% d\u1eef li\u1ec7u \u0111\u1ec3 l\u1eadp m\u00f4 h\u00ecnh, 30% d\u1eef li\u1ec7u \u0111\u1ec3 th\u1ea9m \u0111\u1ecbnh ch\u00e9o, l\u1eb7p l\u1ea1i 200 l\u1ea7n \u0111\u00e3 gi\u00fap l\u1ef1a ch\u1ecdn v\u00e0 cung c\u1ea5p kh\u00e1ch quan sai s\u1ed1.<\/p>\n – M\u00f4 h\u00ecnh \u01b0\u1edbc t\u00ednh sinh kh\u1ed1i AGB v\u1edbi bi\u1ebfn \u0111\u1ea7u v\u00e0o c\u1ed9ng \u0111\u1ed3ng thu th\u1eadp ch\u00ednh x\u00e1c l\u00e0 D, \u0111\u1ed9 tin c\u1eady \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n khi ph\u00e2n chia m\u00f4 h\u00ecnh theo 3 c\u1ea5p H d\u1ea1ng AGB = ai <\/sub>\u00d7 Db<\/sup>. M\u00f4 h\u00ecnh \u01b0\u1edbc t\u00ednh sinh kh\u1ed1i BGB c\u00f3 \u0111\u1ed9 tin c\u1eady cao nh\u1ea5t v\u1edbi m\u1ed9t bi\u1ebfn D d\u1ea1ng BGB = a \u00d7 Db<\/sup> l\u00e0 ph\u00f9 h\u1ee3p v\u1edbi d\u1eef li\u1ec7u \u0111o \u0111\u1ea1c c\u1ee7a c\u1ed9ng \u0111\u1ed3ng. M\u00f4 h\u00ecnh \u01b0\u1edbc t\u00ednh sinh kh\u1ed1i l\u00e2m ph\u1ea7n tr\u00ean v\u00e0 d\u01b0\u1edbi m\u1eb7t \u0111\u1ea5t: TAGB = a \u00d7 Gb <\/sup>v\u00e0 TBGB = a \u00d7 Gb<\/sup>; trong \u0111\u00f3 G l\u00e0 ch\u1ec9 ti\u00eau m\u00e0 c\u1ed9ng \u0111\u1ed3ng c\u00f3 th\u1ec3 \u0111o \u0111\u1ea1c \u0111\u01b0\u1ee3c. Tuy nhi\u00ean sai s\u1ed1 s\u1ebd t\u00edch l\u0169y th\u00eam 9-12% so v\u1edbi s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh c\u00e2y c\u00e1 th\u1ec3.<\/p>\n – C\u1ed9ng \u0111\u1ed3ng c\u00f3 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng GPS trong gi\u00e1m s\u00e1t bi\u1ebfn \u0111\u1ed9ng di\u1ec7n t\u00edch r\u1eebng \u1edf quy m\u00f4 nh\u1ecf v\u00e0 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed \u00f4 m\u1eabu ng\u1eabu nhi\u00ean; D\u1eef li\u1ec7u D v\u00e0 H c\u1ee7a 3 c\u00e2y trong m\u1ed9t c\u1ea5p k\u00ednh do c\u1ed9ng \u0111\u1ed3ng \u0111o \u0111\u1ea1c l\u00e0 tin c\u1eady, t\u1eeb \u0111\u00f3 \u01b0\u1edbc t\u00ednh sinh kh\u1ed1i AGB, BGB c\u00f3 sai l\u1ec7ch kh\u00f4ng \u0111\u00e1ng k\u1ec3 so v\u1edbi chuy\u00ean vi\u00ean k\u1ef9 thu\u1eadt. \u00d4 m\u1eabu h\u00ecnh tr\u00f2n 1.000 m2<\/sup> ph\u00e2n t\u1ea7ng theo ba c\u1ea5p k\u00ednh \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn; Trong PCM, c\u1ed9ng \u0111\u1ed3ng ch\u1ec9 c\u1ea7n t\u1eadp trung \u0111o \u0111\u1ea1c, gi\u00e1m s\u00e1t c\u00e1c b\u1ec3 ch\u1ee9a carbon trong c\u00e2y g\u1ed7 ph\u1ea7n tr\u00ean v\u00e0 d\u01b0\u1edbi m\u1eb7t \u0111\u1ea5t.<\/p>\n – M\u1ed9t h\u01b0\u1edbng d\u1eabn PCM ho\u00e0n ch\u1ec9nh \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean c\u01a1 s\u1edf k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u, th\u1ea9m \u0111\u1ecbnh \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p, c\u00f4ng c\u1ee5, m\u00f4 h\u00ecnh<\/p>\n Thesis\u2019s title: Developing methodology to be applied by ethnic minority communities for carbon measurement, monitoring in evergreen broad-leaved forests in the Central Highlands.<\/b><\/p>\n Specialization: Silviculture; Code: 62.62.02.05<\/p>\n Ph.D Student\u2019s name: Pham Tuan Anh<\/p>\n Supervisor: Assoc.Prof.Dr. Bao Huy<\/p>\n Training Institution: Vietnamese Academy of Forest Sciences<\/p>\n SUMMARY OF THE NEW CONCLUSIONS OF THE DISSERTATION:<\/strong><\/p>\n – To develop biomass models, methods of fitting power form were performed using weighted non-linear Maximum Likelihood with random effect of environmental factors provided the reliability higher than logarit transformation least square linear method. The random sampling with 70% of data to develop models, and 30% of data for cross validation, and 200 times realizations helped to select and provide correctly errors of the biomass estimation models.<\/p>\n – Model for estimating tree above ground biomass (AGB) using predictor variable as diameter at breast height (D) to be measured by the community, the reliability of this model was improved when dividing the model into three site indexes by AGB = ai <\/sub>\u00d7 Db<\/sup>. Model for estimating tree below ground biomass (BGB) had the highest reliability with a variable D to be measured by the community using form of BGB = a \u00d7 Db<\/sup>. The estimation models for forest above and below ground biomass: TAGB = a \u00d7 Gb <\/sup>and TBGB = a \u00d7 Gb<\/sup>; in which the G was basal area measured by the community. However, using the model for forest level the error will accumulate from 9 to 12 percent compared with the model for individual tree.<\/p>\n – Community was able to use GPS for monitoring forest land use change at small-scale, identify random sample plots in the field; Data of D and the height of the tree (H) of three trees in a certain diameter class measured by the community had reliability that were applied for estimating AGB and BGB got a negligible deviation in comparison with measurement of technical staffs. Nested circle plot 1,000 m2<\/sup> with three diameter classes was selected; For PCM, the community just needs to focus on measurement, monitoring of pools of tree above and below ground carbon.<\/p>\n – A completed PCM guideline was developed that based on the results of this research.<\/p>\n Lu\u1eadn \u00e1n, t\u00f3m t\u1eaft lu\u1eadn \u00e1n xem t\u1ea1i \u0111\u00e2y:\u00a0Tom tat Luan an VN Final<\/a>;\u00a0Luan an<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam tr\u00e2n tr\u1ecdng gi\u1edbi thi\u1ec7u lu\u1eadn \u00e1n Ti\u1ebfn s\u0129 \u00a0v\u1ec1 \u0111\u1ec1 \u00a0t\u00e0i : “X\u00e2y d\u1ef1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 c\u1ed9ng \u0111\u1ed3ng \u1ee9ng d\u1ee5ng trong \u0111o t\u00ednh gi\u00e1m s\u00e1t cacbon r\u1eebng l\u00e1 r\u1ed9ng th\u01b0\u1eddng xanh \u1edf T\u00e2y Nguy\u00ean”. Chuy\u00ean ng\u00e0nh: L\u00e2m sinh; M\u00e3 s\u1ed1: 62 62 02 05. H\u1ecd v\u00e0 t\u00ean […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[42,66,72,1],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/17109"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=17109"}],"version-history":[{"count":4,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/17109\/revisions"}],"predecessor-version":[{"id":17115,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/17109\/revisions\/17115"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=17109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=17109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=17109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}