【国家地理百年纪念典藏】第12集 神秘三角洲 #國家地理 #紀錄片 #探索

阿富汗,就像以前那樣 在大卡拉哈里大森林的中心 就有一個不可思議的沙漠 一個巨大的沙漠 叫做奧科旺河 是自然世界無法改變的寺廟 自人類的誕生以來 奧科旺河就像在阿富汗的其他地方 充滿了野生生物的豐富潮流 與這片豐富的森林結合 這是一個平靜的美麗的世界 但即使如此 永恆的戰爭仍然持續 此外,捕獲的規矩也不斷改變 遭受奧科旺河潮流的迫切波動 有些野生生物 必須儘快被捕獲 才能到達深水 但無處可逃 野生狗是優秀的獵物 但牠們的捕獲技術 在河流沉沉的時期 被蜻蜓種類挑戰 特別適合在污垢中 水定義了這個奇妙的地方 它經常決定誰會成功 誰會失敗 誰會生存 誰會死亡 在非洲偉大的水地 奧科旺河 奧科旺河的心臟 是一個永恆的漩渦 是一片漩渦 沿途流通的湖泊和湖泊 是一片漩渦 沿途流通的湖泊和湖泊 是一片漩渦 沿途流通的湖泊和湖泊 被野生生物和沙塵污染 沿途流通的湖泊和沙塵污染 這些乾淨的水變得清晰 在世界偉大的沙漠中 有了發生了獨特的交流 由於氣候和地理 源自奧科旺河 是南非最長的河流 在達到巴塞納 它走過兩條地理間 沿途流通的湖泊 成為了一條線路 成爲世界上最大的海洋沙漠之一 沙漠可以從宇宙中看到 傳播出像一隻巨大的手 傳播出像一隻巨大手 傳瘋中傳射 傳播出像一隻巨大的手 splinter berger 碼頭 漂亮 ermo 菩薩 蜀草 這隻蜥蜴迷惑了沙漠,尋找魚和蜥蜴 美人魚的蜥蜴在低傳播的蜥蜴植樹中繼續遊蕩 遊蕩水道時,美人魚有時可以帶來快速的結局 來到年輕的蜥蜴的旅程 經過長夜的挖掘,蜥蜴們用一整天的時間去消化和挖掘 一隻蜥蜴可以把一百五十公斤的植物變成草 這在轉變的過程中充滿了水和植物的生命 沿着草原的方向,蜥蜴們穿梭沿着沙漠的道路 創造水道和水道 現在是沙漠水流從奧科旺河流向沙漠流向沙漠 但是在沙漠邊緣,去年沙漠流的水很快就在流淌 蜥蜴們在沙漠裏挖掘 它們在沙漠邊緣的草葉上飼養 一羣野狗出現了 這些是非洲繪畫的世界 狗是技術專業的技術家 但是奧科旺河有一個特別的挑戰 蜥蜴們總是爲了威脅危險而運行 蜥蜴們開發了遠距離的尾巴 讓它們運行在沙漠裏 狗通常與它們無關 當蜥蜴們逃離沙漠裏 狗就選擇等待和盯着 狗的態度被證明了 一隻蜥蜴在附近 但蜥蜴們寧願與一隻蜥蜴 與一隻狗鬥爭 在奧科旺河裏 蜥蜴樹與草葉的環境相連 它們提供了陽光和庇護 並且充滿了果仁 蜥蜴們可以在這些草葉裏 舉行聚會 但是它們並不是唯一的渴望 在夜裏 蜥蜴的剩餘果仁並沒有忘記 亞洲蜥蜴也愛它們 它們的刺刺硬硬 蜥蜴把脂肪裏的脂肪擠出 使蜥蜴變成了 未來的蜥蜴樹 雖然虛弱的蜥蜴 必須將蜥蜴的果仁喫掉 但它們仍然是蜥蜴 雖然虛弱的蜥蜴 必須將果仁喫掉 但它們仍然是世界上最少的牧羊 牠們沒有牙齒 而這隻走路的蜥蜴 卻能夠逃脫蜥蜴和蜥蜴的困境 當蜥蜴遇到蜥蜴困境時 它使用力量的牙齒 把蜥蜴撕成了硬硬的石頭 它們內部是一個複雜的系統 充滿了神祕的白色蜥蜴 昏暗的日光 在一個典型的牧場 有數百萬只蜥蜴 使用牠們的粗糙的牙齒 蜥蜴會在大量的蜥蜴中盼望 蜥蜴的牧場 爲蜥蜴和蜥蜴提供了隱藏的地方 很多牧場成爲了 充滿了海洋的基礎 歐可梵高的遊客觀景 顯示它們 在一個廣闊的團組中 圍繞着沙灘和海洋 在這一季 各種大遊戲的蜥蜴 從緩緩下沉的海邊游出 沙灘和海洋之外 大海洋仍然在乾淨 Buffalo rumble far and wide in search of water With all the noise and dust, it almost seems that war has broken out in the Oak of Angle It is the onset of the dry season, the African winter For these wild dogs, it is the time for rearing pups Expectant females clean out abandoned burrows where they can give birth in safety The wild dogs of Africa are a distinct species Only distantly related to domesticated dogs Contagious diseases and hunting by man have threatened them with extinction But here in the heart of the Oak of Angle, they are free to hunt and reproduce in relative safety When the females are about to give birth, there is little for the pack to do but wait Hooded vultures keep them company Only a few months ago there was water here Now there are plains of grass dried to a golden brown During the dry season, the open plains of the Oak of Angle favor animals built for speed These cheetahs have only to lie in wait As their prey appear in numbers The cheetah is the fastest cat on earth And it will sometimes walk boldly up to its prey Until it's within sprinting range The prey finds camouflage in the amber fields of grass But one false move can betray the reed buck As the victim is hauled into the shade Silent witnesses pass by the scene The dry season herds of giraffes seek the last remaining water in the flood plains Back in the den of the wild dogs There is much excitement Three weeks after birth, the pups are finally emerging into daylight Up until now, the mothers have not allowed other dogs near their burrows But now everyone joins in, welcoming the new arrivals In this pack, while several females have given birth Only the dominant female assumes the role of mother She even nurses the pups of the other females Still the dominant female has trouble keeping an eye on all 21 new arrivals One of the other females, perhaps a new mother herself, kidnaps a pup She and a cohort carry it back towards another burrow But it is a short-lived venture As the dominant female quickly drives them off She reclaims the pup as her own Millions of birds move in unison like a great school of fish Engulfing the air Swirling flocks of quillias converge on the diminishing water holes to quench their thirst The Okavango is now in the midst of a long, dry winter All across the flood plains, dried-out game trails radiate from the shrinking water holes Wildlife congregate around the few oases Here they'll wait out the dry season until the annual flood arrives Which is still working its way ever so slowly out of the permanent swamp Small groups of buffalo from across the plains now mass together into herds of thousands Water is their most critical need But the wild dogs obtain much of their water needs from the flesh of their prey The pups even seem to enjoy the dry weather as they frolic in the winter sun More and more they're playing at hunting Assuming the stance for stalking, this pup launches a mock attack on the others Out on the hunt, the adult dogs survey a herd of lechwe Grazing on the plains Without water nearby, these lechwe are very vulnerable For this is the season of the wild dog Hunting in packs up to 20 or more, wild dogs are very successful hunters They have incredible stamina and blazing speed At times, second only to the cheetah Once in the jaws of predators, the victim's fate is sealed The lechwe ceases its struggling and appears to go into deep shock Within a few minutes, the prey is dismembered The dogs gorge themselves to fill their bellies Because the pups and their guardians are awaiting them The pack returns from the hunt It's a time of high excitement and celebration A guardian receives a piece of the kill Regurgitated by one of the hunters The pups clamor to receive their share They too are fed regurgitated meat The pups are becoming frisky and aggressive Launching surprise attacks on their constant companions, the vultures Nearby are three male lions A formidable coalition that have roamed this area for years A lioness, part of a pride of females Awaits with anticipation for one of the males In the surrounding vegetation, the others mark the group's territory In a bizarre-looking expression called flamen The male lion tests the air for the scent That indicates the female is in heat Lions have been known to copulate up to 80 times a day But the duration is brief, from a minute to only six seconds This group of lions monopolizes several prides of females in their territory But still find ample time to rest The long, dry winter seems endless Day after day, a remorseless sun arcs through a cloudless sky It warms the air after cool, even bitter cold nights This year's floodwaters are slow in coming Vital pools and waterholes have shrunk to mere puddles Catfish are now concentrated in the ooze Fish eagles swoop down the river Fish eagles swoop down to gorge on the fish They compete among themselves, even in the midst of plenty The ponds are becoming crowded Large crocodiles have abandoned them And the constant presence of buffalo and other animals Now force the smaller crocs to move on as well Every creature vies for its place in the comforting waters Until they lose Young crocs seek new hiding places in the shade of reeds There they will lie dormant until the floodwaters return Rolling in the mud, the buffalo crushes a pool of catfish All the better for the marabou Who now has only to pluck out the lifeless prey For the fish, disaster For the birds, a season of plenty Once again, water, or the lack of it Determines who will survive in the Okavango The hippo pools are now more hippo than pool In the dry, innervating air They wallow in the last of the cooling mud Catfish try to crawl away in search of other pools It's a futile effort And many pools are already a grisly mass of dying fish All over the plains there is a desperate need for water Then a rare and welcome sound at the height of the dry season In a cruel twist of fate, this storm brings not rain, but fire Lightning has set off the dry grass And in moments the floodplains are a swirling inferno The frantic pangolin desperately tries to outrun the flames Many smaller creatures and insects Will be consumed by the fire in seconds Wildfire races across the Okavango Setting palm papyrus ablaze Burning tapers carried by the wind spread the fire everywhere The wild dogs know from experience not to run in panic The big game animals escape to the center's large islands There the vegetation is sparse And there is little to feed the killing flames The fire rages for days It marches in a deadly procession north towards the permanent swamp Rivers and channels provide only temporary barriers The towering flames whipped by the wind leap across the waterways And into the swamp itself The fire is over It has scorched thousands of acres of floodplain And has stripped great areas of the permanent swamp of its vegetation All that remains is a charred landscape Seemingly devoid of life Fire can be good for the delta Clearing away dead vegetation and prompting the growth of new grass But some fear that too many man-made fires Could do irreversible damage to the Okavango The pangolin is a survivor Having found refuge in an underground burrow The larger animals have also escaped the flames Only to face an even more arid and harsh environment than before But now at last The Okavango works its greatest magic As the new floodwaters finally arrive In surreal counterpoint Prickles of water create tendrils of dust As they advance across the plains They slowly percolate through the ashes Restoring life to the charred land Only inches deep in places The new flood spreads out across the land Some creatures that survived the fire Now perish in the rising waters The waters of the Okavango Have come a thousand miles from the mountains of Angola They now end their journey On the vast floodplains of the Kalahari The water will slowly refill The dry channels and dusty lagoons It also courses through old hippo paths Allowing many predators to infiltrate the plains Myriads of fish migrate with the new water To feed on the rich supply of insects it displaces Not far behind are young crocodiles Water birds now search the edge of the flood Finding a rich concentration of prey The pelicans welcome the season of plenty Eagerly scooping up newly arrived catfish For the hippos, it's time at last to gather And bathe in deep water All the animals are now forced to cross the flooded areas Water is once again an element to contend with The wild dogs must negotiate a maze of waterways Infiltrated by stealthy crocodiles They're aware that for every croc they see Others may lurk unseen Hunting and escaping Now depend on crossing ever deepening channels Cheetahs are creatures of the drier savanna But those that live in the Okavango Must cross the waters to hunt They do so after much hesitation And then with brutal speed In their prey, cheetahs go for the throat Then they patiently wait While life ebbs slowly from their victim Nightfall and spring rains have stirred a singular event As winged termites called alates Take flight before mating underground The puff adder too responds to the spell of the season Now is its time to bear young With the rain, the Okavango glitters with moisture And the plains turn a vivid green The wild dog pups have been playing and hunting for weeks They're now old enough to witness the real thing They join the pack Now ranging far and wide in search of prey At every water crossing, the adults are cautious But the pups will learn only gradually About the enemy the water hides And when the chase begins in earnest The pups must be left behind In the excitement and confusion Comes a moment of extreme danger Urged on by the adults The pups must cross to safety Once more, ancient adversaries have met And played out their predestined roles The drama of the wild favors neither predator nor prey The survival of all is ensured in the natural world Which gives no creature an absolute advantage All belong and have their proper place In the great water land called the Okavango