{"id":8838,"date":"2009-03-24T04:31:46","date_gmt":"2009-03-23T21:31:46","guid":{"rendered":"http:\/\/vafs.gov.vn\/vn\/2009\/03\/tac-dung-phong-ho-cua-rung-trong-tren-dun-cat-bay-ven-bien\/"},"modified":"2019-09-24T10:51:53","modified_gmt":"2019-09-24T03:51:53","slug":"tac-dung-phong-ho-cua-rung-trong-tren-dun-cat-bay-ven-bien","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/vn\/tac-dung-phong-ho-cua-rung-trong-tren-dun-cat-bay-ven-bien\/","title":{"rendered":"T\u00e1c d\u1ee5ng ph\u00f2ng h\u1ed9 c\u1ee7a r\u1eebng tr\u1ed3ng tr\u00ean \u0111\u1ee5n c\u00e1t bay ven bi\u1ec3n"},"content":{"rendered":"

 <\/p>\n

\u0110\u1eb7ng V\u0103n Thuy\u1ebft,Tri\u1ec7u Th\u00e1i H\u01b0ng<\/em><\/strong><\/p>\n

Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em><\/p>\n

V\u00f9ng c\u00e1t ven bi\u1ec3n n\u01b0\u1edbc ta l\u00e0 v\u00f9ng sinh th\u00e1i r\u1ea5t kh\u1eafc nghi\u1ec7t, hi\u1ec3m ho\u1ea1 c\u00e1t di \u0111\u1ed9ng uy hi\u1ebfp m\u1ea1nh m\u1ebd v\u00e0 tr\u1edf th\u00e0nh khu v\u1ef1c r\u1ea5t xung y\u1ebfu. Kho\u1ea3ng 400.000ha c\u00e1c d\u1ea3i c\u00e1t di \u0111\u1ed9ng tr\u1ea3i d\u1ecdc b\u1edd bi\u1ec3n mi\u1ec1n Trung \u0111\u00e3 v\u00e0 \u0111ang b\u1ecb sa m\u1ea1c ho\u00e1, \u01b0\u1edbc t\u00ednh m\u1ed7i n\u0103m c\u00f3 20 ha \u0111\u1ea5t canh t\u00e1c n\u00f4ng nghi\u1ec7p b\u1ecb l\u1ea5n b\u1edfi c\u00e1c \u0111\u1ee5n c\u00e1t di \u0111\u1ed9ng. Ph\u1ea7n l\u1edbn di\u1ec7n t\u00edch c\u00e1c \u0111\u1ee5n, c\u1ed3n c\u00e1t bay tr\u00ean kh\u1eafp d\u1ea3i c\u00e1t ven bi\u1ec3n n\u01b0\u1edbc ta v\u1eabn b\u1ecb b\u1ecf hoang do ch\u01b0a x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c lo\u00e0i c\u00e2y tr\u1ed3ng v\u00e0 k\u1ef9 thu\u1eadt ph\u00f9 h\u1ee3p.<\/p>\n

K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u tr\u00ean \u0111\u1ea5t c\u00e1t di \u0111\u1ed9ng \u1edf Qu\u1ea3ng B\u00ecnh \u0111\u00e3 x\u00e2y d\u1ef1ng th\u00e0nh c\u00f4ng c\u00e1c \u0111ai r\u1eebng ph\u00f2ng h\u1ed9, b\u01b0\u1edbc \u0111\u1ea7u \u0111em l\u1ea1i t\u00e1c d\u1ee5ng ph\u00f2ng h\u1ed9 ch\u1eafn gi\u00f3, c\u1ed1 \u0111\u1ecbnh c\u00e1t, c\u1ea3i thi\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u00f4ng kh\u00ed v\u00e0 \u0111\u1ea5t.<\/p>\n

Trong b\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u00e1c d\u1ee5ng ph\u00f2ng h\u1ed9 c\u1ee7a c\u00e1c \u0111ai r\u1eebng th\u1eed nghi\u1ec7m tr\u00ean \u0111\u1ee5n c\u00e1t bay (\u0110\u1ee5n c\u00e1t kh\u00f4ng c\u00f3 c\u00e2y c\u1ecf che ph\u1ee7, b\u1ecb di \u0111\u1ed9ng do gi\u00f3) \u1edf v\u00f9ng c\u00e1t ven bi\u1ec3n t\u1ec9nh Qu\u1ea3ng B\u00ecnh.<\/p>\n

H\u00ecnh 1: \u0110\u1ee5n c\u00e1t di \u0111\u1ed9ng ven bi\u1ec3n<\/em><\/p>\n

1. Ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u<\/strong><\/p>\n

a. Quan tr\u1eafc v\u00e0 thu th\u1eadp s\u1ed1 li\u1ec7u <\/em><\/strong><\/p>\n

– \u0110o \u0111\u1ebfm ch\u1ec9 ti\u00eau D1.3<\/sub>, Hvn, Dt, Lt, s\u1ed1 c\u00e0nh\/c\u00e2y, m\u1eadt \u0111\u1ed9 hi\u1ec7n t\u1ea1i \u1edf c\u00e1c \u0111ai r\u1eebng th\u1eed nghi\u1ec7m.<\/p>\n

– S\u1eed d\u1ee5ng m\u00e1y Kestrell 3000 c\u1ea7m tay \u0111o nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u1ea9m \u0111\u1ed9 kh\u00f4ng kh\u00ed; t\u1ed1c \u0111\u1ed9 gi\u00f3 trung b\u00ecnh trong 5 ph\u00fat (m\u1ed7i l\u1ea7n\/ \u0111i\u1ec3m \u0111o) \u1edf \u0111\u1ed9 cao 1,0m t\u1ea1i v\u1ecb tr\u00ed 10m ph\u00eda tr\u01b0\u1edbc \u0111ai, gi\u1eefa \u0111ai v\u00e0 10m ph\u00eda sau \u0111ai r\u1eebng, v\u00e0o c\u00e1c th\u1eddi \u0111i\u1ec3m t\u1eeb 7 gi\u1edd \u0111\u1ebfn 17 gi\u1edd trong ng\u00e0y \u1edf m\u00f9a gi\u00f3 \u0110\u00f4ng B\u1eafc.<\/p>\n

 <\/p>\n

b. Ch\u1ec9 ti\u00eau \u0111\u00e1nh gi\u00e1 t\u00e1c d\u1ee5ng ch\u1eafn gi\u00f3<\/em><\/strong><\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u n\u0103ng ch\u1eafn gi\u00f3, trong \u0111\u00f3: E (l\u1ea7n) l\u00e0 hi\u1ec7u n\u0103ng ch\u1eafn gi\u00f3 hay s\u1ed1 l\u1ea7n t\u1ed1c \u0111\u1ed9 gi\u00f3 \u1edf gi\u1eefa \u0111ai v\u00e0 sau \u0111ai 10m gi\u1ea3m hay t\u0103ng so v\u1edbi tr\u01b0\u1edbc \u0111ai 10m; V (m\/s) l\u00e0 t\u1ed1c \u0111\u1ed9 gi\u00f3 l\u1ea5y \u1edf kho\u1ea3ng c\u00e1ch gi\u1eefa \u0111ai r\u1eebng v\u00e0 sau \u0111ai r\u1eebng 10m; Vo (m\/s) l\u00e0 t\u1ed1c \u0111\u1ed9 gi\u00f3 \u1edf v\u1ecb tr\u00ed 10m tr\u01b0\u1edbc \u0111ai r\u1eebng.<\/p>\n

 <\/p>\n

c. Ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh gi\u00e1 t\u00e1c d\u1ee5ng c\u1ed1 \u0111\u1ecbnh c\u00e1t<\/em><\/strong><\/p>\n

Tr\u00ean c\u00e1c \u0111ai r\u1eebng th\u1eed nghi\u1ec7m, \u0111\u00e1nh d\u1ea5u v\u1ecb tr\u00ed m\u1eb7t c\u00e1t khi tr\u1ed3ng tr\u00ean c\u00e1c g\u1ed1c c\u00e2y. T\u1eeb v\u1ecb tr\u00ed \u0111\u00e1nh d\u1ea5u tr\u00ean g\u1ed1c c\u00e2y, \u0111o \u0111\u1ed9 cao c\u00e1t di \u0111\u1ed9ng (b\u1ecb l\u1ea5p hay b\u1ecb b\u1ed1c \u0111i) \u1edf n\u0103m th\u1ee9 3 (Khi r\u1eebng \u0111\u1ea1t 3 tu\u1ed5i). T\u1eeb \u0111\u00f3 \u0111\u00e1nh gi\u00e1 t\u00e1c d\u1ee5ng c\u1ed1 \u0111\u1ecbnh c\u00e1t c\u1ee7a c\u00e1c \u0111ai r\u1eebng th\u1eed nghi\u1ec7m.<\/p>\n

<\/h3>\n

d. \u0110\u00e1nh gi\u00e1 t\u00e1c d\u1ee5ng c\u1ea3i thi\u1ec7n \u0111\u1ea5t<\/em><\/h3>\n

– Tr\u00ean c\u00e1c \u0111ai r\u1eebng th\u1eed nghi\u1ec7m thu th\u1eadp l\u01b0\u1ee3ng l\u00e1 r\u1ee5ng tr\u00ean 4 \u00f4 d\u1ea1ng b\u1ea3n, m\u1ed7i \u00f4 d\u1ea1ng b\u1ea3n l\u00e0 di\u1ec7n t\u00edch m\u1eb7t \u0111\u1ea5t c\u00f3 l\u00e1 r\u1ee5ng c\u1ee7a 1 g\u1ed1c c\u00e2y. Hong ph\u01a1i to\u00e0n b\u1ed9 l\u01b0\u1ee3ng c\u00e0nh r\u01a1i l\u00e1 r\u1ee5ng thu \u0111\u01b0\u1ee3c trong kh\u00f4ng kh\u00ed v\u00e0 c\u00e2n b\u1eb1ng c\u00e2n \u0111\u0129a.<\/p>\n

– L\u1ea5y 01 m\u1eabu \u0111\u1ea5t t\u1ea7ng 0-20cm \u1edf m\u1ed7i c\u00f4ng th\u1ee9c th\u00ed nghi\u1ec7m v\u00e0 \u0111\u1ed1i ch\u1ee9ng (n\u01a1i tr\u1ed1ng). Ph\u00e2n t\u00edch t\u00ednh ch\u1ea5t \u0111\u1ea5t theo ph\u01b0\u01a1ng ph\u00e1p th\u00f4ng d\u1ee5ng hi\u1ec7n nay.<\/p>\n

2. T\u00e1c d\u1ee5ng ph\u00f2ng h\u1ed9 c\u1ee7a r\u1eebng th\u1eed nghi\u1ec7m tr\u00ean \u0111\u1ee5n c\u00e1t bay<\/strong><\/p>\n

C\u00e1c \u0111ai r\u1eebng ch\u1ecdn \u0111\u00e1nh gi\u00e1 t\u00e1c d\u1ee5ng ph\u00f2ng h\u1ed9 l\u00e0 \u0111ai A. difficilis, A. tumida, A. torulosa<\/em> v\u00e0 phi lao 3 tu\u1ed5i, tr\u1ed3ng tr\u00ean \u0111\u1ee5n c\u00e1t bay v\u1edbi m\u1eadt \u0111\u1ed9 tr\u1ed3ng 5000 c\u00e2y\/ha, b\u1ec1 r\u1ed9ng \u0111ai 100m. C\u00e1c ch\u1ec9 ti\u00eau bi\u1ec3u th\u1ecb \u0111\u1eb7c tr\u01b0ng c\u00e1c \u0111ai r\u1eebng (h\u00ecnh 2) \u0111\u01b0\u1ee3c ghi \u1edf bi\u1ec3u 1 cho th\u1ea5y:<\/p>\n

<\/h4>\n

Phi lao h\u1ea1tA. tumidaA. torulosaA. difficilis<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Vùng cát ven bi\u1ec3n n\u01b0\u1edbc ta là vùng sinh thái r\u1ea5t kh\u1eafc nghi\u1ec7t, hi\u1ec3m ho\u1ea1 cát di \u0111\u1ed9ng uy hi\u1ebfp m\u1ea1nh m\u1ebd và tr\u1edf thành khu v\u1ef1c r\u1ea5t xung y\u1ebfu. Kho\u1ea3ng 400.000ha các d\u1ea3i cát di \u0111\u1ed9ng tr\u1ea3i d\u1ecdc b\u1edd bi\u1ec3n mi\u1ec1n Trung \u0111ã và \u0111ang b\u1ecb sa m\u1ea1c hoá, \u01b0\u1edbc tính m\u1ed7i n\u0103m có 20 ha \u0111\u1ea5t canh tác nông nghi\u1ec7p b\u1ecb l\u1ea5n b\u1edfi các \u0111\u1ee5n cát di \u0111\u1ed9ng. Ph\u1ea7n l\u1edbn di\u1ec7n tích các \u0111\u1ee5n, c\u1ed3n cát bay trên kh\u1eafp d\u1ea3i cát ven bi\u1ec3n n\u01b0\u1edbc ta v\u1eabn b\u1ecb b\u1ecf hoang do ch\u01b0a xác \u0111\u1ecbnh \u0111\u01b0\u1ee3c loài cây tr\u1ed3ng và k\u1ef9 thu\u1eadt phù h\u1ee3p. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8838"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=8838"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8838\/revisions"}],"predecessor-version":[{"id":19066,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8838\/revisions\/19066"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8838"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}