<\/p>\n

Tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi\u00a0in nghi\u00eang<\/i><\/h2>\n

Trang 36 sgk \u0110\u1ecba L\u00ed 12:\u00a0<\/b>H\u00e3y n\u00eau \u1ea3nh h\u01b0\u1edfng c\u1ee7a Bi\u1ec3n \u0110\u00f4ng \u0111\u1ebfn thi\u00ean nhi\u00ean n\u01b0\u1edbc ta.<\/i><\/span><\/p>\n

Tr\u1ea3 l\u1eddi:<\/b><\/p>\n

*) Kh\u00ed h\u1eadu:<\/p>\n

– T\u0103ng \u0111\u1ed9 \u1ea9m c\u1ee7a c\u00e1c kh\u1ed1i kh\u00ed qua bi\u1ec3n, mang l\u1ea1i cho n\u01b0\u1edbc ta l\u01b0\u1ee3ng m\u01b0a v\u00e0 \u0111\u1ed9 \u1ea9m l\u1edbn, \u0111\u1ed3ng th\u1eddi l\u00e0m gi\u1ea3m t\u00ednh ch\u1ea5t kh\u1eafc nghi\u1ec7t c\u1ee7a th\u1eddi ti\u1ebft l\u1ea1nh kh\u00f4 trong m\u00f9a \u0111\u00f4ng v\u00e0 l\u00e0m d\u1ecbu b\u1edbt th\u1eddi ti\u1ebft n\u00f3ng b\u1ee9c trong m\u00f9a h\u1ea1.<\/p>\n

– Nh\u1edd c\u00f3 Bi\u1ec3n \u0110\u00f4ng, kh\u00ed h\u1eadu n\u01b0\u1edbc ta mang nhi\u1ec1u \u0111\u1eb7c t\u00ednh c\u1ee7a kh\u00ed h\u1eadu h\u1ea3i d\u01b0\u01a1ng n\u00ean \u0111i\u1ec1u h\u00f2a h\u01a1n.<\/p>\n

*) \u0110\u1ecba h\u00ecnh v\u00e0 c\u00e1c h\u1ec7 sinh th\u00e1i v\u00f9ng ven bi\u1ec3n<\/p>\n

– C\u00e1c d\u1ea1ng \u0111\u1ecba h\u00ecnh ven bi\u1ec3n n\u01b0\u1edbc ta r\u1ea5t \u0111a d\u1ea1ng: v\u1ecbnh c\u1eeda s\u00f4ng, c\u00e1c b\u1edd bi\u1ec3n m\u00e0i m\u00f2n, c\u00e1c tam gi\u00e1c ch\u00e2u c\u00f3 b\u00e3i tri\u1ec1u r\u1ed9ng, c\u00e1c b\u00e3i c\u00e1t ph\u1eb3ng, c\u1ed3n c\u00e1t, c\u00e1c \u0111\u1ea7m ph\u00e1, c\u00e1c v\u0169ng v\u1ecbn n\u01b0\u1edbc s\u00e2u, c\u00e1c \u0111\u1ea3o ven b\u1edd v\u00e0 nh\u1eefng r\u1ea1n san h\u00f4….<\/p>\n

– C\u00e1c h\u1ec7 sinh th\u00e1i v\u00f9ng ven bi\u1ec3n r\u1ea5t \u0111a d\u1ea1ng v\u00e0 gi\u00e0u c\u00f3<\/p>\n

+ H\u1ec7 sinh th\u00e1i r\u1eebng n\u01b0\u1edbc m\u1eb7n \u1edf n\u01b0\u1edbc ta v\u1ed1n c\u00f3 di\u1ec7n t\u00edch t\u1edbi 450 ngh\u00ecn ha, cho n\u0103ng su\u1ea5t sinh h\u1ecdc cao, \u0111\u1eb7c bi\u1ec7t l\u00e0 sinh v\u1eadt n\u01b0\u1edbc l\u1ee3.<\/p>\n

+ C\u00e1c h\u1ec7 sinh th\u00e1i tr\u00ean \u0111\u1ea5t ph\u00e8n v\u00e0 h\u1ec7 sinh th\u00e1i r\u1eebng tr\u00ean c\u00e1c \u0111\u1ea3o c\u0169ng r\u1ea5t \u0111a d\u1ea1ng v\u00e0 phong ph\u00fa.<\/p>\n

*) T\u00e0i nguy\u00ean thi\u00ean nhi\u00ean v\u00f9ng bi\u1ec3n<\/p>\n

– T\u00e0i nguy\u00ean kho\u00e1ng s\u1ea3n:<\/p>\n

+ C\u00f3 tr\u1eef l\u01b0\u1ee3ng l\u1edbn v\u00e0 gi\u00e1 tr\u1ecb nh\u1ea5t l\u00e0 d\u1ea7u kh\u00ed. Hai b\u1ec3 d\u1ea7u l\u1edbn nh\u1ea5t hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c khai th\u00e1c l\u00e0 Nam C\u00f4n S\u01a1n v\u00e0 C\u1eedu Long; c\u00e1c b\u1ec3 d\u1ea7u kh\u00ed Th\u1ed5 Chu -M\u00e3 Lai v\u00e0 S\u00f4ng H\u1ed3ng c\u00f3 tr\u1eef l\u01b0\u1ee3ng \u0111\u00e1ng k\u1ec3.<\/p>\n

+ C\u00e1c b\u00e3i c\u00e1t ven bi\u1ec3n c\u00f3 tr\u1eef l\u01b0\u1ee3ng l\u1edbn titan l\u00e0 ngu\u1ed3n nguy\u00ean li\u1ec7u qu\u00fd cho c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\n

+ V\u00f9ng ven bi\u1ec3n n\u01b0\u1edbc ta c\u00f2n thu\u1eadn l\u1ee3i cho ngh\u1ec1 l\u00e0m mu\u1ed1i, nh\u1ea5t l\u00e0 ven bi\u1ec3n Nam Trung B\u1ed9, n\u01a1i c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao, nhi\u1ec1u n\u1eafng.<\/p>\n

– T\u00e0i nguy\u00ean h\u1ea3i s\u1ea3n:<\/p>\n

+ Sinh v\u1eadt Bi\u1ec3n \u0110\u00f4ng ti\u00eau bi\u1ec3u cho h\u1ec7 sinh v\u1eadt v\u00f9ng bi\u1ec3n nhi\u1ec7t \u0111\u1edbi gi\u00e0u th\u00e0nh ph\u1ea7n v\u00e0 c\u00f3 n\u0103ng su\u1ea5t sinh h\u1ecdc cao, nh\u1ea5t l\u00e0 \u1edf v\u00f9ng ven b\u1edd. Trong Bi\u1ec3n \u0110\u00f4ng c\u00f3 tr\u00ean 2000 lo\u00e0i c\u00e1, h\u01a1n 100 lo\u00e0i t\u00f4m, kho\u1ea3ng v\u00e0i ch\u1ee5c lo\u00e0i m\u1ef1c, h\u00e0ng ngh\u00ecn lo\u00e0i sinh v\u1eadt ph\u00f9 du v\u00e0 sinh v\u1eadt \u0111\u00e1y kh\u00e1c.<\/p>\n

+ Ven c\u00e1c \u0111\u1ea3o, nh\u1ea5t l\u00e0 t\u1ea1i qu\u1ea7n \u0111\u1ea3o l\u1edbn Ho\u00e0ng Sa v\u00e0 Tr\u01b0\u1eddng Sa c\u00f3 ngu\u1ed3n t\u00e0i nguy\u00ean qu\u00fd gi\u00e1 l\u00e0 c\u00e1c r\u1ea1n san h\u00f4 c\u00f9ng \u0111\u00f4ng \u0111\u1ea3o c\u00e1c lo\u00e0i sinh v\u1eadt kh\u00e1c.<\/p>\n

*) Thi\u00ean tai<\/p>\n

– B\u00e3o: M\u1ed7i n\u0103m trung b\u00ecnh c\u00f3 9-10 c\u01a1n b\u00e3i xu\u1ea5t hi\u1ec7n \u1edf Bi\u1ec3n \u0110\u00f4ng, trong \u0111\u00f3 c\u00f3 34 c\u01a1n b\u00e3o tr\u1ef1c ti\u1ebfp \u0111\u1ed5 v\u00e0o n\u01b0\u1edbc ta, g\u00e2y thi\u1ec7t h\u1ea1i n\u1eb7ng n\u1ec1 v\u1ec1 ng\u01b0\u1eddi v\u00e0 t\u00e0i s\u1ea3n, nh\u1ea5t l\u00e0 v\u1edbi c\u01b0 d\u00e2n s\u1ed1ng \u1edf v\u00f9ng ven bi\u1ec3n n\u01b0\u1edbc ta.<\/p>\n

– S\u1ea1t l\u1edf b\u1edd bi\u1ec3n: Hi\u1ec7n t\u01b0\u1ee3ng s\u1ea1t l\u1edf b\u1edd bi\u1ec3n \u0111\u00e3 v\u00e0 \u0111ang \u0111e d\u1ecda nhi\u1ec1u \u0111o\u1ea1n b\u1edd bi\u1ec3n n\u01b0\u1edbc ta, nh\u1ea5t l\u00e0 d\u1ea3i b\u1edd bi\u1ec3n Trung B\u1ed9.<\/p>\n

– \u1ede v\u00f9ng ven bi\u1ec3n mi\u1ec1n Trung c\u00f2n ch\u1ecbu t\u00e1c h\u1ea1i c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng c\u00e1t bay, c\u00e1t ch\u1ea3y l\u1ea5n chi\u1ebfm ru\u1ed9ng v\u01b0\u1eddn, l\u00e0ng m\u1ea1c v\u00e0 l\u00e0m hoang m\u1ea1c h\u00f3a \u0111\u1ea5t \u0111ai.<\/p>\n

Trang 36 sgk \u0110\u1ecba L\u00ed 12:\u00a0<\/b>X\u00e1c \u0111\u1ecbnh tr\u00ean b\u1ea3n \u0111\u1ed3 \u0110\u1ecba l\u00ed t\u1ef1 nhi\u00ean Vi\u1ec7t Nam v\u1ecb tr\u00ed c\u00e1c v\u1ecbnh bi\u1ec3n: H\u1ea1 Long, \u0110\u00e0 N\u1eb5ng, Xu\u00e2n \u0110\u00e0i, V\u00e2n Phong, Cam Ranh. C\u00e1c v\u1ecbnh bi\u1ec3n n\u00e0y thu\u1ed9c c\u00e1c t\u1ec9nh, th\u00e0nh ph\u1ed1 n\u00e0o?<\/i><\/span><\/p>\n

Tr\u1ea3 l\u1eddi:<\/b><\/p>\n

– H\u1ea1 Long (th\u00e0nh ph\u1ed1 H\u1ea1 Long, t\u1ec9nh Qu\u1ea3ng Ninh).<\/p>\n

– \u0110\u00e0 N\u1eb5ng (th\u00e0nh ph\u1ed1 \u0110\u00e0 N\u1eb5ng).<\/p>\n

– Xu\u00e2n \u0110\u00e0i (t\u1ec9nh Ph\u00fa Y\u00ean)<\/p>\n

– V\u00e2n Phong, Cam Ranh (Kh\u00e1nh H\u00f2a).<\/p>\n

C\u00c2U H\u1eceI V\u00c0 B\u00c0I T\u1eacP<\/strong><\/p>\n

C\u00e2u 1: N\u00eau kh\u00e1i qu\u00e1t v\u1ec1 Bi\u1ec3n \u0110\u00f4ng<\/b><\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

– Bi\u1ec3n \u0110\u00f4ng l\u00e0 m\u1ed9t v\u00f9ng bi\u1ec3n r\u1ed9ng, c\u00f3 di\u1ec7n t\u00edch 3,477 tri\u1ec7u km^{2<\/sup>.<\/p>\n}

– L\u00e0 bi\u1ec3n t\u01b0\u01a1ng \u0111\u1ed1i k\u00edn, ph\u00e1i t\u00e2y l\u00e0 l\u1ee5c \u0111\u1ecba, ph\u00eda \u0111\u00f4ng v\u00e0 ph\u00eda nam \u0111\u01b0\u1ee3c bao b\u1ecdc b\u1edfi c\u00e1c v\u00f2ng cung \u0111\u1ea3o.<\/p>\n

– \u0110\u1eb7c t\u00ednh n\u00f3ng \u1ea9m v\u00e0 ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a gi\u00f3 m\u00f9a.<\/p>\n

– Bi\u1ec3n \u0110\u00f4ng gi\u00e0u kho\u00e1ng s\u1ea3n v\u00e0 h\u1ea3i s\u1ea3n.<\/p>\n

\n

\n

C\u00e2u 2:<\/b>\u00a0H\u00e3y n\u00eau \u1ea3nh h\u01b0\u1edfng c\u1ee7a Bi\u1ec3n \u0110\u00f4ng t\u1edbi kh\u00ed h\u00e2u, \u0111\u1ecba h\u00ecnh v\u00e0 gi\u1edbi sinh v\u1eadt v\u00f9ng ven bi\u1ec3n n\u01b0\u1edbc ta.<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

– Kh\u00ed h\u1eadu: nh\u1edd c\u00f3 Bi\u1ec3n \u0110\u00f4ng, kh\u00ed h\u1eadu n\u01b0\u1edbc ta mang nhi\u1ec1u \u0111\u1eb7c t\u00ednh c\u1ee7a kh\u00ed h\u1eadu h\u1ea3i d\u01b0\u01a1ng, \u0111i\u1ec1u ho\u00e0 h\u01a1n.<\/p>\n

+ Bi\u1ec3n \u0110\u00f4ng l\u00e0 ngu\u1ed1n d\u1ef1 tr\u1eef \u1ea9m, l\u00e0m cho \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a kh\u00f4ng kh\u00ed th\u01b0\u1eddng tr\u00ean 80%.<\/p>\n

+ Bi\u1ec3n \u0110\u00f4ng \u0111\u00e3 mang l\u1ea1i cho n\u01b0\u1edbc ta m\u1ed9t l\u01b0\u1ee3ng m\u01b0a l\u1edbn.<\/p>\n

+ C\u00e1c lu\u1ed3ng gi\u00f3 t\u1eeb bi\u1ec3n th\u1ed5i v\u00e0o lu\u1ed5n s\u00e2u theo c\u00e1c thung l\u0169ng s\u00f4ng l\u00e0m gi\u1ea3m \u0111\u1ed9 l\u1ee5c \u0111\u1ecba \u1edf c\u00e1c v\u00f9ng \u1edf ph\u00eda t\u00e2y \u0111\u1ea5t n\u01b0\u1edbc.<\/p>\n

+ Bi\u1ec3n \u0110\u00f4ng l\u00e0m bi\u1ebfn t\u00ednh c\u00e1c kh\u1ed1i kh\u00ed \u0111i qua bi\u1ec3n v\u00e0o n\u01b0\u1edbc ta.<\/p>\n

– \u0110\u1ecba h\u00ecnh v\u00e0 gi\u1edbi sinh v\u1eadt v\u00f9ng hi\u1ec3n<\/p>\n

+ C\u00e1c d\u1ea1ng \u0111\u1ecba h\u00ecnh ven bi\u1ec3n r\u1ea5t \u0111a d\u1ea1ng: v\u1ecbnh c\u1eeda s\u00f4ng, c\u00e1c b\u1edd bi\u1ec3n m\u00e0i m\u00f2n, c\u00e1c tam gi\u00e1c ch\u00e2u th\u1ed5 v\u1edbi b\u00e3i tri\u1ec1u r\u1ed9ng l\u1edbn, c\u00e1c b\u00e3i c\u00e1t ph\u1eb3ng l\u00ec, c\u00e1c v\u0169ng v\u1ecbnh n\u01b0\u1edbc s\u00e2u, c\u00e1c \u0111\u1ea3o ven b\u1edd v\u00e0 nh\u1eefng r\u1ea1n san h\u00f4… c\u00f3 nhi\u1ec1u gi\u00e1 tr\u00ed v\u1ec1 kinh t\u1ebf bi\u1ec3n (x\u00e2y d\u1ef1ng c\u1ea3ng bi\u1ec3n, khai th\u00e1c v\u00e0 nu\u00f4i tr\u1ed5ng thu\u1ef7 s\u1ea3n, du l\u1ecbch,..).<\/p>\n

+ Gi\u1edbi sinh v\u1eadt v\u00f9ng bi\u1ec3n r\u1ea5t \u0111a d\u1ea1ng v\u00e0 gi\u00e0u c\u00f3: th\u1ec3 hi\u1ec7n \u1edf c\u00e1c h\u1ec7 sinh th\u00e1i (h\u1ec7 sinh th\u00e1i r\u1eebng ng\u1eadp m\u1eb7n, h\u1ec7 sinh th\u00e1i tr\u00ean \u0111\u1ea5t ph\u00e8n, n\u01b0\u1edbc m\u1eb7n, n\u01b0\u1edbc l\u1ee3 kh\u00e1c v\u00e0 h\u1ec7 sinh th\u00e1i r\u1eebng tr\u00ean \u0111\u1ea3o) gi\u00e0u t\u00e0i nguy\u00ean sinh v\u1eadt.<\/p>\n

C\u00e2u 3:<\/b>\u00a0H\u00e3y n\u00eau c\u00e1c ngu\u1ed3n t\u00e0i nguy\u00ean thi\u00ean nhi\u00ean v\u00e0 thi\u00ean tai \u1edf v\u00f9ng bi\u1ec3n n\u01b0\u1edbc ta.<\/span><\/p>\n

L\u1eddi gi\u1ea3i:<\/b><\/p>\n

– T\u00e0i nguy\u00ean thi\u00ean nhi\u00ean v\u00f9ng bi\u1ec3n<\/p>\n

+ T\u00e0i nguy\u00ean kho\u00e1ng s\u1ea3n: d\u1ea7u kh\u00ed (c\u00f3 tr\u1eef l\u01b0\u1ee3ng l\u1edbn v\u00e0 gi\u00e1 tr\u1ecb nh\u1ea5t), c\u00e1c m\u1ecf sa kho\u00e1ng nh\u01b0 ti tan, c\u00e1c b\u00e3i c\u00e1t ven bi\u1ec3n (tr\u1eef l\u01b0\u1ee3ng l\u1edbn). V\u00f9ng ven bi\u1ec3n thu\u1eadn l\u1ee3i cho ngh\u1ec1 l\u00e0m mu\u1ed1i.<\/p>\n

+ T\u00e0i nguy\u00ean h\u1ea3i s\u1ea3n: sinh v\u1eadt gi\u00e0u th\u00e0nh ph\u1ea7n lo\u00e0i v\u00e0 c\u00f3 n\u00e0ng su\u1ea5t sinh h\u1ecdc cao, nh\u1ea5t l\u00e0 \u1edf ven b\u1edd. Trong Bi\u1ec3n \u0110\u00f4ng c\u00f3 t\u1edbi tr\u00ean 2000 lo\u00e0i c\u00e1, h\u01a1n 100 lo\u00e0i t\u00f4m, kho\u1ea3ng v\u00e0i ch\u1ee5c lo\u00e0i m\u1ef1c, h\u00e0ng ngh\u00ecn lo\u00e0i sinh v\u1eadt ph\u00f9 du v\u00e0 sinh v\u1eadt \u0111\u00e1y. Ven c\u00e1c \u0111\u1ea3o, nh\u1ea5t l\u00e0 hai qu\u1ea7n \u0111\u1ea3o l\u1edbn Ho\u00e0ng Sa v\u00e0 Tr\u01b0\u1eddng Sa c\u00f2n c\u00f3 c\u00e1c r\u1ea1n san h\u00f4 v\u00e0 c\u00e1c lo\u00e0i sinh v\u1eadt kh\u00e1c t\u1eadp trung.<\/p>\n

– Thi\u00ean tai<\/p>\n

+ B\u00e3o: M\u1ed7i n\u0103m trung b\u00ecnh c\u00f3 3 \u0111\u1ebfn 4 c\u01a1n b\u00e3o tr\u1ef1c ti\u1ebfp t\u1eeb Bi\u1ec3n \u0110\u00f4ng \u0111\u1ed5 v\u00e0o n\u01b0\u1edbc ta, g\u00e2y nhi\u1ec1u thi\u1ec7t h\u1ea1i n\u1eb7ng n\u1ec1 cho s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1eddi s\u1ed1ng.<\/p>\n

+ S\u1ea1t l\u1edf b\u1edd bi\u1ec3n: x\u1ea3y ra nhi\u1ec1u \u1edf d\u1ea3i b\u1edd bi\u1ec3n Trung B\u1ed9.<\/p>\n

+ C\u00e1t bay, c\u00e1t ch\u1ea3y l\u1ea5n chi\u1ebfm ru\u1ed9ng v\u01b0\u1eddn, l\u00e0ng m\u1ea1c v\u00e0 l\u00e0m hoang h\u00f3a \u0111\u1ea5t \u0111ai \u1edf v\u00f9ng ven bi\u1ec3n mi\u1ec1n Trung.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

  Tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi\u00a0in nghi\u00eang Trang 36 sgk \u0110\u1ecba L\u00ed 12:\u00a0H\u00e3y n\u00eau \u1ea3nh h\u01b0\u1edfng c\u1ee7a Bi\u1ec3n \u0110\u00f4ng \u0111\u1ebfn thi\u00ean nhi\u00ean n\u01b0\u1edbc ta. Tr\u1ea3 l\u1eddi: *) Kh\u00ed h\u1eadu: – T\u0103ng \u0111\u1ed9 \u1ea9m c\u1ee7a c\u00e1c kh\u1ed1i kh\u00ed qua bi\u1ec3n, mang l\u1ea1i cho n\u01b0\u1edbc ta l\u01b0\u1ee3ng m\u01b0a v\u00e0 \u0111\u1ed9 \u1ea9m l\u1edbn, \u0111\u1ed3ng th\u1eddi l\u00e0m gi\u1ea3m t\u00ednh ch\u1ea5t […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1297],"tags":[1415,1414],"yoast_head":"\n