Recently, LuoBuBo environment of scientific expedition team LuoBuBo drilling for the comprehensive system of environmental science. According to preliminary infer that sometime in the qinghai-tibet plateau, with seven to eight million years ago, the rapid uplift LuoBuBo bysouthing north migration, drying, resulting in increased gradually whole lakes dry. Such an explanation is not satisfactory, Chinese academy of sciences institute of geology and geophysics ZhouKun professor argues that, uncle LuoBuBo dry complex reasons. It is a global problem, and regional issues, besides natural causes, and human factors.
A global climate is dry, the big background
Human and neolithic in here, the Bronze Age here, then just value population prosperous period, the temperature LuoBuBo, environment. But then, after entering cooling zone, river water environment, lakes, desert expansion. At about 2000 BC, the performance of drought in north China area in loess accumulation, ice, lakes, retreat.
The disappearance of the ancient lou-lan and about in the fourth century to the han dynasty to the north (central), then it intensifies the dry periods. In fact, the dry process, not only is the ancient lou-lan and desert expansion, and successively occur in kelatongke pier, hananiah, milan, soil, and integration of khan city of wancheng etc.
Second, the qinghai-tibet plateau uplift is geography
Besides global climate change, the uplift of qinghai-tibet plateau is the most important cause of regional. In seven to eight million years ago, the rapid uplift of qinghai-tibet plateau. The uplift of northwest China's climate decisive role. LuoBuBo due to the geographical location is located in east Asia and the Pacific northwest inland, every year and the Indian Ocean warm air almost all rarely reach here.
When the global climate change, the east west began to appear the drought and desertification, gobi tendency. During this period, LuoBuBo started from the south to the north. 7 million years ago, when the lake near lake to the last drop dramatically. Because of the uneven terrain lake, the ancient great unity of LuoBuBo decomposing now, and manasseh kelatongke lake, north of lake and LuoBuBo larger.
In regional factors, there must be worthy of note, from the remote sensing data said recently, which had a big upstream of the landslide. The landslide whole blocked river channels, which was broken LuoBuBo of water. The question now is still don't know the exact time the landslide occurred in, whether it LuoBuBo dry before remains to study.
Third, LuoBuBo accelerate human development
Human activities on the LuoBuBo dry effect, more recent in late may. Waste water and trees are the key oasis can survive. Loulan city was established in kongquehe downstream of the water resources, there was a growing HuYangShu exuberant the materials for the building. When people in LuoBuBo edge loulan diameters for 10 million square meters of loulan city, they cut off many trees and reed, it will undoubtedly on environment.
In this period, human activities and the changes of water damage, make the war and the fragile worsening ecological environment. 5 the "river churchyard density, root stump" male who had felt loulan survival crisis, to pray tribe to bless his sons reproduction worship. But they cut the trees, already scarce has deteriorated to the local environment.
The final LuoBuBo dry, and in the tarim river upstream of the liberation of our development. When we in tarim river upstream of the tarim river after water diversion, bills, appear to flow downstream. This point in recent years from the Yellow River dry-up can get by. No water supplies because of LuoBuBo also began shrinking, eventually finally die.
樓蘭消失的原因：
最近，中科院羅布泊環境鉆探科學考察隊對羅布泊進行了全面系統的環境科學考察。考察隊認為：據初步推斷，隨著青藏高原在距今7到8萬年前的快速隆升，羅布泊由南向北遷移，幹旱化逐步加劇，最後導致整個湖泊幹涸。這樣的壹個解釋顯然並不能讓人滿意，中國科學院地質與地球物理研究所的周昆叔教授則認為，羅布泊幹涸的原因很復雜。這裏面既是全球性的問題，也是地域性的問題，除了自然方面的原因，還有人為方面的因素。
壹、全球氣候旱化是大背景
新石器時代人類便涉足這裏，青銅器時代這裏人口繁盛，這時恰值高溫期，羅布泊湖面廣闊，環境適宜。但此後進入降溫區後，水土環境變差，河水減少，湖泊縮減，沙漠擴大。在距今約2000年左右旱化加劇，這表現在中國北方廣大地區冰進發生，黃土堆積，湖沼消亡，海退發生。
樓蘭古城的消亡大約在公元前後至四世紀(中原的漢朝到北魏時期)，這時正是旱化加劇的時期。其實，在這壹旱化過程中，不僅是樓蘭古城消亡，而且由於沙漠擴大，先後發生尼雅、喀拉墩、米蘭城、尼壤城、可汗城、統萬城等的消亡。
二、青藏高原隆起是地域因素
除了全球氣候的變化之外，青藏高原的隆起是地域性中最重要的原因。在距今7到8萬年前，青藏高原快速隆升。這種隆起對中國西北部的氣候具有決定性的作用。由於羅布泊所處的地理位置位於東亞西北內陸，每年，太平洋和印度洋的暖濕氣流幾乎都很少到達這裏。
當全球氣候發生變化時，整個東亞西部都開始出現了幹旱和沙漠化、戈壁化趨勢。在這期間，羅布泊開始從南向北推移。在距今7萬年左右的時候，湖面急劇下降到最後接近湖底。因湖底地形的高低不平，原先巨大統壹的古羅布泊分解成現在的臺特瑪湖、喀拉和順湖和北面較大的羅布泊。
在地域性因素中，還有壹點必須值得註意，據說從近來的遙感資料判斷，孔雀河上遊曾發生了壹次大的滑坡事件。這次滑坡整個堵塞了孔雀河的河流通道，致使羅布泊的來水被斷。現在的問題是還不知道這次滑坡的具體時間，它是否發生在羅布泊幹涸之前還有待於研究。
三、人類過度開發加速羅布泊消亡
人類活動對羅布泊幹涸的影響，在晚近期可以說越來越大。水源和樹木是荒原上綠洲能夠存活的關鍵。樓蘭古城正建立在當時水系發達的孔雀河下遊三角洲，這裏曾有長勢繁茂的胡楊樹供其取材建設。當年樓蘭人在羅布泊邊築造了10多萬平方米的樓蘭古城，他們砍伐掉許多樹木和蘆葦，這無疑會對環境產生負作用。
在這期間，人類活動的加劇以及水系的變化和戰爭的破壞，使原本脆弱的生態環境進壹步惡化。5號小河墓地上密植的“男根樹樁”說明，樓蘭人當時已感到部落生存危機，只好祈求生殖崇拜來保佑其子孫繁衍下去。但他們大量砍伐本已稀少的樹木，使當地已經惡化的環境雪上加霜。
羅布泊的最終幹涸，則與我們解放後在塔裏木河上遊的過度開發有關。當年我們在塔裏木河上遊大量引水後，致使塔裏木河河水入不敷出，下遊出現斷流。這壹點從近年來的黃河斷流就可以得到印證。羅布泊也由於沒有來水補給，便開始迅速萎縮，終至最後消亡