\u0110\u1eb7ng Trung T\u1ea5n<\/i><\/p>\n
Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/i><\/p>\n
T\u1ec9nh C\u00e0 Mau c\u00f3 hai h\u1ec7 th\u1ed1ng r\u1eebng ng\u1eadp r\u1ea5t n\u1ed5i ti\u1ebfng, \u0111\u00f3 l\u00e0 r\u1eebng tr\u00e0m U Minh v\u00e0 r\u1eebng ng\u1eadp m\u1eb7n N\u0103m C\u0103n. T\u1eeb l\u00e2u c\u00e1c nh\u00e0 khoa h\u1ecdc trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc \u0111\u00e3 ch\u00fa \u00fd nghi\u00ean c\u1ee9u ch\u00fang, trong \u0111\u00f3 m\u1ed9t l\u0129nh v\u1ef1c kh\u00f4ng th\u1ec3 b\u1ecf qua l\u00e0 nghi\u00ean c\u1ee9u v\u1ec1 h\u1ec7 th\u1ef1c v\u1eadt, v\u00ec \u0111\u00e2y l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng quan tr\u1ecdng c\u1ee7a c\u00e1c h\u1ec7 sinh th\u00e1i r\u1eebng.<\/p>\n
Vi\u1ec7c nghi\u00ean c\u1ee9u h\u1ec7 th\u1ef1c v\u1eadt, kh\u00f4ng nh\u1eefng gi\u00fap ch\u00fang ta hi\u1ec3u \u0111\u01b0\u1ee3c k\u1ebft c\u1ea5u v\u00e0 di\u1ec5n th\u1ebf c\u1ee7a r\u1eebng ng\u1eadp, m\u00e0 c\u00f2n gi\u00fap ch\u00fang ta th\u1ea5y \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 phong ph\u00fa, \u0111a d\u1ea1ng c\u1ee7a c\u00e1c ch\u1ee7ng lo\u00e0i th\u1ef1c v\u1eadt, m\u1ed9t trong nh\u1eefng th\u01b0\u1edbc \u0111o \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 \u0111a d\u1ea1ng sinh h\u1ecdc c\u1ee7a m\u1ed9t h\u1ec7 sinh th\u00e1i.<\/p>\n
Nh\u1eefng nghi\u00ean c\u1ee9u v\u1ec1 h\u1ec7 sinh th\u00e1i n\u00f3i chung v\u00e0 h\u1ec7 th\u1ef1c v\u1eadt n\u00f3i ri\u00eang \u1edf khu v\u1ef1c r\u1eebng tr\u00e0m U Minh c\u1ee7a Ph\u00f9ng Trung Ng\u00e2n, Tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc t\u1ed5ng h\u1ee3p TP H\u1ed3 Ch\u00ed Minh v\u00e0 nh\u1eefng nghi\u00ean c\u1ee9u h\u1ec7 sinh th\u00e1i v\u00e0 khu h\u1ec7 th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp m\u1eb7n c\u1ee7a Phan Nguy\u00ean H\u1ed3ng, Tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc S\u01b0 ph\u1ea1m H\u00e0 N\u1ed9i l\u00e0 nh\u1eefng t\u01b0 li\u1ec7u qu\u00ed c\u1ea7n \u0111\u01b0\u1ee3c k\u1ebf th\u1eeba v\u00e0 ph\u00e1t huy.<\/p>\n
Ngo\u00e0i ra, m\u1ed9t s\u1ed1 nh\u00e0 khoa h\u1ecdc kh\u00e1c c\u0169ng \u0111\u00e3 c\u00f3 nh\u1eefng b\u00e1o c\u00e1o v\u1ec1 h\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp C\u00e0 Mau. Ng\u01b0\u1eddi c\u00f3 c\u00f4ng t\u1eadp h\u1ee3p, h\u1ec7 th\u1ed1ng l\u1ea1i c\u00e1c nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 H\u00e0 Qu\u1ed1c H\u00f9ng, S\u1edf L\u00e2m nghi\u1ec7p Minh H\u1ea3i v\u00e0 \u0111\u00e3 cho ra \u0111\u1eddi danh m\u1ee5c th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp C\u00e0 Mau (s\u1ed5 tay c\u00e2y c\u1ecf r\u1eebng ng\u1eadp C\u00e0 Mau).<\/p>\n
Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, Trung t\u00e2m nghi\u00ean c\u1ee9u \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt r\u1eebng ng\u1eadp Minh H\u1ea3i \u0111\u00e3 ti\u1ebfn h\u00e0nh nhi\u1ec1u \u0111\u1ee3t \u0111i\u1ec1u tra ri\u00eang l\u1ebb ho\u1eb7c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c c\u01a1 quan nghi\u00ean c\u1ee9u kh\u00e1c v\u1ec1 h\u1ec7 th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp C\u00e0 Mau v\u00e0 \u0111\u00e3 c\u00f3 m\u1ed9t s\u1ed1 k\u1ebft qu\u1ea3 b\u01b0\u1edbc \u0111\u1ea7u nh\u01b0 sau:<\/p>\n
I. H\u1ec7 th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp C\u00e0 Mau<\/b>.<\/p>\n
1. Danh m\u1ee5c th\u1ef1c v\u1eadt:<\/i><\/b><\/p>\n
Theo cu\u1ed1n ” C\u00e2y c\u1ecf r\u1eebng ng\u1eadp C\u00e0 Mau” do H\u00e0 Qu\u1ed1c H\u00f9ng t\u1eadp h\u1ee3p, nghi\u00ean c\u1ee9u v\u00e0 th\u1ed1ng k\u00ea t\u1eeb nhi\u1ec1u ngu\u1ed3n t\u01b0 li\u1ec7u, h\u1ec7 th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp C\u00e0 Mau g\u1ed3m 217 lo\u00e0i. Nh\u1eefng b\u1ed5 sung g\u1ea7n \u0111\u00e2y c\u1ee7a Trung t\u00e2m Nghi\u00ean c\u1ee9u v\u00e0 \u1ee9ng d\u1ee5ng r\u1eebng ng\u1eadp Minh H\u1ea3i v\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 \u0111\u01b0a s\u1ed1 lo\u00e0i l\u00ean 228 lo\u00e0i. C\u00e1c lo\u00e0i m\u1edbi t\u00ecm \u0111\u01b0\u1ee3c ch\u1ee7 y\u1ebfu l\u00e0 c\u00e1c lo\u00e0i c\u00e2y c\u1ecf, th\u00e2n b\u1ee5i kh\u00f4ng m\u1ea5y \u00fd ngh\u0129a khoa h\u1ecdc v\u00e0 th\u1ef1c ti\u1ec5n. Ch\u1ec9 c\u00f3 3 lo\u00e0i c\u00e2y th\u00e2n g\u1ed7 v\u00e0 b\u1ee5i kh\u00e1 l\u1edbn l\u00e0:<\/p>\n
– Tu h\u00fa (Gmelina clliptica<\/i>) h\u1ecd Verbenaceae.<\/p>\n
– Tra l\u00e2m v\u1ed3 (Ficus rumphii<\/i>) h\u1ecd Moraceae.<\/p>\n
– V\u1eb9t d\u00f9 b\u00f4ng \u0111\u1ecf (Bruguiera gymnorriza<\/i>) h\u1ecd Rhizophoraceae.<\/p>\n
Trong \u0111\u00f3, v\u1eb9t d\u00f9 b\u00f4ng \u0111\u1ecf l\u00e0 m\u1ed9t lo\u00e0i c\u00e2y ch\u00ednh th\u1ee9c c\u1ee7a r\u1eebng ng\u1eadp m\u1eb7n, tr\u01b0\u1edbc nay v\u1eabn t\u01b0\u1edfng l\u00e0 kh\u00f4ng hi\u1ec7n di\u1ec7n \u1edf r\u1eebng ng\u1eadp m\u1eb7n C\u00e0 Mau, nay ph\u00e1t hi\u1ec7n th\u1ea5y t\u1ea1i Kinh-5 \u0110\u00e1 B\u1ea1c thu\u1ed9c v\u00f9ng bi\u1ec3n V\u1ecbnh Th\u00e1i Lan.<\/p>\n
\u0110\u1eb7c bi\u1ec7t, m\u1ed9t lo\u00e0i v\u1eb9t (Bruguiera<\/i>) kh\u00e1c \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n v\u00e0 thu m\u1eabu v\u00e0o cu\u1ed1i n\u0103m 1997. Lo\u00e0i n\u00e0y c\u00f3 nhi\u1ec1u n\u00e9t gi\u1ed1ng v\u1edbi lo\u00e0i v\u1eb9t t\u00e1ch (Bruguiera parviflora<\/i>), m\u00e0 ng\u01b0\u1eddi d\u00e2n \u0111\u1ecba ph\u01b0\u01a1ng g\u1ecdi l\u00e0 v\u1eb9t da t\u00e2y, nh\u01b0ng c\u0169ng c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1 kh\u00e1c bi\u1ec7t, c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t lo\u00e0i m\u1edbi.<\/p>\n
Trong s\u1ed1 228 lo\u00e0i th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp C\u00e0 Mau, theo th\u1ed1ng k\u00ea m\u1edbi nh\u1ea5t bao g\u1ed3m:<\/p>\n
– 19 lo\u00e0i quy\u1ebft th\u1ef1c v\u1eadt thu\u1ed9c 10 h\u1ecd<\/p>\n
– 135 lo\u00e0i hai l\u00e1 m\u1ea7m thu\u1ed9c 50 h\u1ecd trong \u0111\u00f3:<\/p>\n
+ Nh\u00f3m c\u00e2y g\u1ed7: 43 lo\u00e0i, 21 h\u1ecd.<\/p>\n
+ Nh\u00f3m c\u00e2y b\u1ee5i: 20 lo\u00e0i, 10 h\u1ecd.<\/p>\n
+ Nh\u00f3m d\u00e2y leo: 23 lo\u00e0i, 10 h\u1ecd.<\/p>\n
+ Nh\u00f3m c\u1ecf: 49 lo\u00e0i, 15 h\u1ecd.<\/p>\n
– 74 lo\u00e0i m\u1ed9t l\u00e1 m\u1ea7m thu\u1ed9c 18 h\u1ecd bao g\u1ed3m:<\/p>\n
+ Nh\u00f3m th\u00e2n th\u1ea3o: 68 lo\u00e0i, 15 h\u1ecd.<\/p>\n
+ Nh\u00f3m d\u00e2y leo: 3 lo\u00e0i, 2 h\u1ecd.<\/p>\n
+ Nh\u00f3m th\u00e2n g\u1ed7: 3 lo\u00e0i, 1 h\u1ecd.<\/p>\n
Ph\u00e2n theo h\u1ec7 sinh th\u00e1i:<\/p>\n
– H\u1ec7 sinh th\u00e1i r\u1eebng tr\u00e0m v\u00e0 c\u00e1c v\u00f9ng \u0111\u1ea5t n\u01b0\u1edbc ng\u1ecdt ph\u1ee5 c\u1eadn kh\u00e1c g\u1ed3m 204 lo\u00e0i.<\/p>\n
– H\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp m\u1eb7n v\u00e0 c\u00e1c v\u00f9ng ng\u1eadp m\u1eb7n, l\u1ee3 g\u1ed3m 92 lo\u00e0i.<\/p>\n
– Gi\u1eefa hai h\u1ec7 sinh th\u00e1i r\u1eebng tr\u00e0m v\u00e0 r\u1eebng ng\u1eadp m\u1eb7n c\u00f3 m\u1ed9t s\u1ed1 lo\u00e0i th\u1ef1c v\u1eadt c\u00f3 th\u1ec3 s\u1ed1ng \u0111\u01b0\u1ee3c \u1edf c\u1ea3 hai khu v\u1ef1c, do \u0111\u00f3 s\u1ed1 l\u01b0\u1ee3ng c\u00e1c lo\u00e0i \u1edf c\u1ea3 hai h\u1ec7 sinh th\u00e1i n\u00e0y s\u1ebd l\u1edbn h\u01a1n t\u1ed5ng s\u1ed1 lo\u00e0i \u0111\u01b0\u1ee3c th\u1ed1ng k\u00ea.<\/p>\n
\u0110\u1ed1i v\u1edbi h\u1ec7 th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp m\u1eb7n, s\u1ed1 lo\u00e0i \u0111\u01b0\u1ee3c ki\u1ec3m tra l\u00e0 tr\u00ean to\u00e0n khu v\u1ef1c c\u00f3 r\u1eebng ng\u1eadp m\u1eb7n, bao g\u1ed3m c\u00e1c khu \u0111\u1ea5t ng\u1eadp tri\u1ec1u v\u00e0 c\u1ea3 nh\u1eefng v\u00f9ng \u0111\u1ea5t cao \u0111\u00e3 b\u1ecb t\u00e1c \u0111\u1ed9ng, n\u00ean vi\u1ec7c \u0111\u00e1nh gi\u00e1 s\u1ef1 phong ph\u00fa c\u1ee7a c\u00e2y r\u1eebng ng\u1eadp m\u1eb7n ch\u1ec9 n\u00ean d\u1ef1a v\u00e0o s\u1ed1 lo\u00e0i c\u00e2y r\u1eebng ng\u1eadp m\u1eb7n ch\u00ednh th\u1ee9c m\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc \u0111\u00e3 c\u00f4ng b\u1ed1.<\/p>\n
T\u01b0\u01a1ng t\u1ef1, h\u1ec7 th\u1ef1c v\u1eadt r\u1eebng tr\u00e0m c\u0169ng bao g\u1ed3m nh\u1eefng th\u1ef1c v\u1eadt \u1edf c\u00e1c khu r\u1eebng tr\u00e0m v\u00e0 c\u1ea3 nh\u1eefng di\u1ec7n t\u00edch \u0111\u1ea5t r\u1eebng tr\u01b0\u1edbc \u0111\u00e2y nay \u0111\u00e3 b\u1ecb tho\u00e1i ho\u00e1, kh\u00f4ng c\u00f2n r\u1eebng.<\/p>\n
Trong s\u1ed1 92 lo\u00e0i c\u00e2y c\u1ee7a h\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp C\u00e0 Mau c\u00f3 35 lo\u00e0i c\u00e2y r\u1eebng ng\u1eadp m\u1eb7n ch\u00ednh th\u1ee9c. D\u1ef1a theo danh s\u00e1ch 83 lo\u00e0i c\u00e2y r\u1eebng ng\u1eadp m\u1eb7n ch\u00ednh th\u1ee9c, ngu\u1ed3n t\u1eeb Saenger et al (1983) (Mangrove forest management guidelines – FAO, 1994), trong \u0111\u00f3:<\/p>\n
– D\u1ea1ng th\u00e2n g\u1ed7: 28 lo\u00e0i.<\/p>\n
– D\u1ea1ng palm (cau, d\u1eeba): 2 lo\u00e0i.<\/p>\n
– D\u1ea1ng fern (r\u00e1ng): 1 lo\u00e0i.<\/p>\n
– D\u1ea1ng th\u00e2n th\u1ea3o, c\u00e2y b\u1ee5i: 4 lo\u00e0i.<\/p>\n
– H\u1ecd c\u00f3 nhi\u1ec1u lo\u00e0i nh\u1ea5t l\u00e0: Rhizophoraceae<\/i>: 9 lo\u00e0i.<\/p>\n
Verbenaceae<\/i>: 4 lo\u00e0i.<\/p>\n
Sonneratiaceae<\/i>: 3 lo\u00e0i.<\/p>\n
Combretaceae<\/i>: 2 lo\u00e0i.<\/p>\n
Acanthaceae<\/i>: 2 lo\u00e0i.<\/p>\n
N\u1ebfu d\u1ef1a v\u00e0o danh m\u1ee5c c\u00e1c lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n v\u00e0 c\u00e2y tham gia r\u1eebng ng\u1eadp m\u1eb7n c\u1ee7a Phan Nguy\u00ean H\u1ed3ng (Vai tr\u00f2 c\u1ee7a r\u1eebng ng\u1eadp m\u1eb7n Vi\u1ec7t Nam- Nh\u00e0 xu\u1ea5t b\u1ea3n N\u00f4ng nghi\u1ec7p, n\u0103m 1997) th\u00ec Vi\u1ec7t Nam c\u00f3 32 lo\u00e0i c\u00e2y ng\u1eadp m\u1eb7n ch\u1ee7 y\u1ebfu. Theo danh s\u00e1ch n\u00e0y, r\u1eebng ng\u1eadp m\u1eb7n C\u00e0 Mau c\u00f3 31 lo\u00e0i, ch\u1ec9 thi\u1ebfu lo\u00e0i Rhizophora stylosa<\/i> thu\u1ed9c h\u1ecd Rhizophoraceae.<\/p>\n
2. Hi\u1ec7n tr\u1ea1ng h\u1ec7 th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp C\u00e0 Mau.<\/i><\/b><\/p>\n
N\u1ebfu ch\u1ec9 d\u1ef1a v\u00e0o danh m\u1ee5c th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp C\u00e0 Mau v\u00e0 \u0111\u1eb7c bi\u1ec7t s\u1ed1 lo\u00e0i c\u00e2y r\u1eebng ng\u1eadp m\u1eb7n ch\u00ednh th\u1ee9c n\u00eau tr\u00ean, k\u1ec3 c\u1ea3 s\u1ed1 lo\u00e0i m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n, \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 h\u1ec7 sinh th\u00e1i v\u00e0 s\u1ed1 lo\u00e0i th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp C\u00e0 Mau ng\u00e0y c\u00e0ng ph\u00e1t tri\u1ec3n l\u00e0 kh\u00f4ng x\u00e1c \u0111\u00e1ng. Th\u1ef1c t\u1ebf, nh\u1eefng lo\u00e0i m\u1edbi ph\u00e1t hi\u1ec7n \u0111\u00e3 hi\u1ec7n di\u1ec7n t\u1eeb tr\u01b0\u1edbc \u0111\u1ebfn nay v\u00e0 c\u00f3 l\u1ebd c\u00f2n c\u00f3 nhi\u1ec1u h\u01a1n n\u1eefa m\u00e0 ch\u00fang ta c\u1ea7n ti\u1ebfp t\u1ee5c kh\u1ea3o s\u00e1t, th\u1ed1ng k\u00ea \u0111\u1ea7y \u0111\u1ee7 h\u01a1n.<\/p>\n
Th\u1ef1c ch\u1ea5t, c\u00f9ng v\u1edbi vi\u1ec7c gi\u1ea3m s\u00fat v\u1ec1 di\u1ec7n t\u00edch v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng trong th\u1eddi gian tr\u01b0\u1edbc \u0111\u00e2y (nay ph\u1ea7n n\u00e0o \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i) th\u00ec h\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp C\u00e0 Mau c\u0169ng c\u00f3 ph\u1ea7n suy gi\u1ea3m.<\/p>\n
Tuy di\u1ec7n t\u00edch r\u1eebng ng\u1eadp m\u1eb7n C\u00e0 Mau hi\u1ec7n nay c\u00f2n r\u1ea5t l\u1edbn, nh\u01b0ng nh\u1eefng c\u00e1nh r\u1eebng nguy\u00ean v\u1eb9n \u0111\u1ec3 chuy\u00ean canh r\u1eebng c\u00f2n \u00edt, ph\u1ea7n nhi\u1ec1u n\u1eb1m \u1edf d\u1ea1ng l\u00e2m- ng\u01b0 k\u1ebft h\u1ee3p (r\u1eebng trong vu\u00f4ng t\u00f4m). K\u1ec3 c\u1ea3 r\u1eebng \u0111\u1eb7c d\u1ee5ng \u0111\u1ea5t M\u0169i c\u0169ng c\u00f3 th\u1eddi k\u1ef3 b\u1ecb t\u00e0n ph\u00e1 nay m\u1edbi \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i.<\/p>\n
R\u1eebng tr\u1ea7m th\u00ec qua nhi\u1ec1u l\u1ea7n ch\u00e1y \u0111i ch\u00e1y l\u1ea1i, nay c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i, nh\u01b0ng \u0111a s\u1ed1 l\u00e0 r\u1eebng non. C\u00e1c khu r\u1eebng tr\u00e0m tr\u00ean c\u00e1c v\u1ed3 than b\u00f9n l\u00e0 nh\u1eefng n\u01a1i phong ph\u00fa nh\u1ea5t v\u1ec1 c\u00e1c lo\u1ea1i th\u1ef1c v\u1eadt, \u0111\u1eb7c bi\u1ec7t c\u00e1c lo\u00e0i th\u00e2n g\u1ed7 v\u00e0 quy\u1ebft th\u1ef1c v\u1eadt th\u00ec nay c\u0169ng b\u1ecb thu h\u1eb9p d\u1ea7n. V\u1ed3 D\u01a1i l\u00e0 khu r\u1eebng \u0111\u1eb7c d\u1ee5ng c\u1ee7a r\u1eebng tr\u00e0m U Minh, qua nhi\u1ec1u l\u1ea7n ch\u00e1y, di\u1ec7n t\u00edch r\u1eebng c\u00e2y l\u1edbn c\u00f2n r\u1ea5t \u00edt (v\u00e0i tr\u0103m ha).<\/p>\n
T\u1eeb hi\u1ec7n tr\u1ea1ng n\u00eau tr\u00ean, tuy di\u1ec7n t\u00edch r\u1eebng ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n v\u00e0 t\u0103ng nhanh, nh\u01b0ng h\u1ec7 sinh th\u00e1i r\u1eebng ch\u01b0a \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i nh\u01b0 x\u01b0a.<\/p>\n
B\u00ean c\u1ea1nh nh\u1eefng lo\u00e0i m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n nh\u01b0 tr\u00ean, m\u00e0 th\u1ef1c ch\u1ea5t n\u00f3 \u0111\u00e3 hi\u1ec7n di\u1ec7n t\u1eeb tr\u01b0\u1edbc, m\u1ed9t s\u1ed1 lo\u00e0i m\u00e0 c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 t\u00ecm th\u1ea5y v\u00e0 l\u00ean danh m\u1ee5c th\u00ec nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, qua nhi\u1ec1u \u0111\u1ee3t kh\u1ea3o s\u00e1t ch\u00fang t\u00f4i v\u1eabn ch\u01b0a t\u00ecm th\u1ea5y \u0111\u01b0\u1ee3c, c\u1ee5 th\u1ec3 g\u1ed3m:<\/p>\n
– C\u00f3c \u0111\u1ecf : Lumnilzera littorea.<\/i><\/p>\n
– C\u00f4i : Scyphiphora hydrophyllacea<\/i>.<\/p>\n
– S\u00fa : Aegiceras florida… <\/i>c\u1ee7a r\u1eebng ng\u1eadp m\u1eb7n.<\/i><\/p>\n
– K\u00e8 : Livistonia saribus<\/i>.<\/p>\n
– Nhum : Oncosperma tigillaria.<\/i><\/p>\n
– Lau m\u00f3ng r\u00f9a : Oberonia gamiei<\/i>… c\u1ee7a r\u1eebng tr\u00e0m.<\/p>\n
M\u1ed9t s\u1ed1 lo\u00e0i hi\u1ec7n nay r\u1ea5t hi\u1ebfm g\u1eb7p, th\u1eadm ch\u00ed c\u00f3 nguy c\u01a1 b\u1ecb tuy\u1ec7t ch\u1ee7ng g\u1ed3m:<\/p>\n
– Su \u1ed5i : Xylocarpus granatum<\/i>.<\/p>\n
– G\u00f5 n\u01b0\u1edbc : Instia bijuga.<\/i><\/p>\n
– V\u1eb9t d\u00f9 b\u00f4ng \u0111\u1ecf: Bruguiera gymnorryza.<\/i><\/p>\n
– Cui : Heritiera littoralis<\/i>… c\u1ee7a r\u1eebng \u0111\u01b0\u1edbc.<\/p>\n
– R\u00e1ng U Minh: asplenum confusum<\/i>.<\/p>\n
– N\u1eafp b\u00ecnh : Nepenthes mirabilis<\/i>.<\/p>\n
– B\u00ed k\u1ef3 nam : Hynophytum formicarum<\/i>.<\/p>\n
– M\u1eadt c\u1eadt : Licuala spinosa<\/i>.<\/p>\n
– Lan th\u1ea1ch h\u1ecdc : Dendrobium crumenatum<\/i>… c\u1ee7a r\u1eebng tr\u00e0m.<\/p>\n
II. K\u1ebft lu\u1eadn.<\/b><\/p>\n
Vi\u1ec7c gi\u1ea3m di\u1ec7n t\u00edch v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng r\u1eebng, nh\u1ea5t l\u00e0 c\u00e1c khu r\u1eebng ng\u1eadp n\u01b0\u1edbc, \u0111\u00e3 nhanh ch\u00f3ng l\u00e0m h\u1ec7 c\u00e2n b\u1eb1ng sinh th\u00e1i b\u1ecb ph\u00e1 v\u1ee1. Tuy vi\u1ec7c tr\u1ed3ng l\u1ea1i r\u1eebng l\u00e0 nh\u00e2n t\u1ed1 t\u00edch c\u1ef1c \u0111\u1ec3 ph\u1ee7 xanh l\u1ea1i r\u1eebng, nh\u01b0ng mu\u1ed1n ph\u1ee5c h\u1ed3i l\u1ea1i m\u1ed9t h\u1ec7 sinh th\u00e1i th\u00ec r\u1ea5t kh\u00f3 kh\u0103n v\u00e0 c\u1ea7n nhi\u1ec1u th\u1eddi gian.<\/p>\n
Hi\u1ec7n nay, ri\u00eang \u1edf t\u1ec9nh C\u00e0 Mau, ngo\u00e0i vi\u1ec7c ph\u1ee5c h\u1ed3i l\u1ea1i hai h\u1ec7 sinh th\u00e1i r\u1eebng tr\u00e0m v\u00e0 r\u1eebng \u0111\u01b0\u1edbc, ch\u00ednh quy\u1ec1n \u0111\u1ecba ph\u01b0\u01a1ng c\u0169ng \u0111\u00e3 ch\u00fa tr\u1ecdng \u0111\u1ebfn vi\u1ec7c b\u1ea3o v\u1ec7, b\u1ea3o t\u1ed3n c\u00e1c khu \u0111a d\u1ea1ng sinh h\u1ecdc, c\u00e1c khu r\u1eebng \u0111\u1eb7c d\u1ee5ng. \u0110\u1eb7c bi\u1ec7t \u0111ang chu\u1ea9n b\u1ecb m\u1edf r\u1ed9ng khu r\u1eebng \u0111\u1eb7c d\u1ee5ng V\u1ed3 D\u01a1i, r\u1eebng \u0111\u1eb7c d\u1ee5ng \u0110\u1ea5t M\u0169i, b\u1ea3o v\u1ec7 c\u00e1c s\u00e2n chim, \u0111\u1ea7u t\u01b0 khu b\u1ea3o t\u1ed3n \u0111a d\u1ea1ng sinh h\u1ecdc r\u1eebng ng\u1eadp m\u1eb7n \u1edf L\u00e2m Ng\u01b0 Tr\u01b0\u1eddng 184, c\u00f9ng v\u1edbi khu s\u01b0u t\u1eadp r\u1eebng ng\u1eadp m\u1eb7n c\u1ee7a Trung t\u00e2m nghi\u00ean c\u1ee9u v\u00e0 \u1ee9ng d\u1ee5ng K\u1ef9 thu\u1eadt r\u1eebng ng\u1eadp Minh H\u1ea3i… \u0110\u00e2y s\u1ebd l\u00e0 nh\u1eefng \u0111i\u1ec1u ki\u1ec7n \u0111\u1ea7u ti\u00ean \u0111\u1ec3 c\u1ea3i thi\u1ec7n h\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp C\u00e0 Mau, b\u1ea3o t\u1ed3n v\u00e0 ph\u1ee5c h\u1ed3i h\u1ec7 th\u1ef1c v\u1eadt v\u1ed1n r\u1ea5t \u0111a d\u1ea1ng \u1edf hai khu r\u1eebng ng\u1eadp n\u1ed5i ti\u1ebfng n\u01a1i \u0111\u00e2y: R\u1eebng ng\u1eadp m\u1eb7n N\u0103m C\u0103n v\u00e0 r\u1eebng tr\u00e0m U Minh.<\/p>\n
T\u00e0i Li\u1ec7u tham kh\u1ea3o<\/b><\/p>\n
1. V\u00f5 V\u0103n Ch\u00ed, V\u0169 V\u0103n Chuy\u00ean, Phan Nguy\u00ean H\u1ed3ng, Tr\u1ea7n H\u1ee3p, L\u00ea Kh\u1ea3 K\u1ebf, \u0110\u1ed7 T\u1ea5t L\u1ee3i, L\u01b0\u01a1ng Ng\u1ecdc To\u1ea3n, Th\u00e1i V\u0103n Tr\u1eebng – C\u00e2y c\u1ecf th\u01b0\u1eddng th\u1ea5y \u1edf Vi\u1ec7t Nam, 1973.<\/p>\n
2. Ph\u00f9ng Trung Ng\u00e2n, Ch\u00e2u Quang Hi\u1ec1n -R\u1eebng ng\u1eadp n\u01b0\u1edbc \u1edf Vi\u1ec7t Nam, 1987..<\/p>\n
3. Mangrore forest management guidelines, FAO, 1994.<\/p>\n
4. Nguy\u1ec5n Ho\u00e0ng Tr\u00ed -Th\u1ef1c v\u1eadt r\u1eebng ng\u1eadp m\u1eb7n Vi\u1ec7t Nam, 1996.<\/p>\n
Flora of Ca Mau mangrove forest.<\/b><\/p>\n
Due to its significance, the ecosystem in general and the flora in particular of the Ca Mau mangrove forest has been paid much attention to by scientists in research and definite results have been obtained. Recently the Minh Hai Centre for mangrove forest research and technique application has carried out a survey and study on Ca Mau mangrove forests. As a result some new plant species were detected bringing the known species to 228 as against 217 species known previously. The studies also indicate that although the area under forest in increasing and much attention is paid by the local authorities to forest conservation, the restoration of the mangrove forest .************************************<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1ec9nh C\u00e0 Mau c\u00f3 hai h\u1ec7 th\u1ed1ng r\u1eebng ng\u1eadp r\u1ea5t n\u1ed5i ti\u1ebfng, \u0111\u00f3 l\u00e0 r\u1eebng tr\u00e0m U Minh v\u00e0 r\u1eebng ng\u1eadp m\u1eb7n N\u0103m C\u0103n. T\u1eeb l\u00e2u c\u00e1c nh\u00e0 khoa h\u1ecdc trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc \u0111\u00e3 ch\u00fa \u00fd nghi\u00ean c\u1ee9u ch\u00fang, trong \u0111\u00f3 m\u1ed9t l\u0129nh v\u1ef1c kh\u00f4ng th\u1ec3 b\u1ecf qua l\u00e0 nghi\u00ean c\u1ee9u v\u1ec1 h\u1ec7 th\u1ef1c v\u1eadt, v\u00ec \u0111\u00e2y l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng quan tr\u1ecdng c\u1ee7a c\u00e1c h\u1ec7 sinh th\u00e1i r\u1eebng. <\/p>\n","protected":false},"author":2,"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\/299"}],"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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=299"}],"version-history":[{"count":3,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/299\/revisions"}],"predecessor-version":[{"id":19365,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/299\/revisions\/19365"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}