中国西北干旱地区降水稀少，冰川融水是河流主要的主要补给，但气温升高使得冰川加速退缩，未来西北的用水将是很大的问题。那么设想一下，要是河流都干枯了，西北人民怎么办呢？我想是东移南迁，这样的事历史上曾发生过。我国5000年以来经历了四次冷期，对应的历史时代是：
一、1100BC-850BC，西周，干冷
二、100AD-600AD,东汉、三国、晋、南北朝，前干后湿
三、1000AD-1200AD，北宋、南宋、辽夏金
四、1300AD-1900AD，明、清
对应四个冷期，都是历史上中国北方民族南下和战争频发的时期。由于气候转冷，北方广大地区环境变得恶劣，不适宜人类生存；而我国南方地区气候温暖湿润，资源丰富，则有利于人类的生存。为了寻找合适的生存地方，北方的民族就向南迁徙。在此过程中，必然与中原的民族发生争夺资源和生存空间的战争。战争不断，但同时也促进了民族间的交融，对中华文明的进步和发展起到推动作用。
但如果现在西北地区的人民迁向其他地区，不会有什么促进交流、繁荣文化的效果了，反倒是其他地区人口更加拥挤了，而人口增加又会带来一系列问题。那么国家又该出台什么政策将这些人口安置在本来就很拥挤了的地方呢？
Loyi

China’s northwest arid areas are scarce in precipitation volume and melted glacier ice is the main supply of water for rivers. But the raise in temperature speed the reduction of glaciers, which poses a great challenge to the future consumption of water in the northwest China. Just imagine if all the rivers were dried up, how would the people in northwest China survive their lives? For my perspective, the eastward and southward migration campaign could be a solution, and the same kind of events used to happen in China. Through out China’s five thousand years history, the northwest people experienced four times of so-called “cold periods”, the detail of which are included in the following:
1. Xizhou Dynasty(1100BC-850BC),cold and wet.
2. Donghan Dynasty, Sango, Jin Dynasty and Northern and Southern Dynasties(100AD-600AD), dry at first and followed by wet.
3. Northern Song Dynasty, Northern Song Dynasty, Liao Dynasty, Jin Dynasty and Xia Dynasty(1000AD-1200AD).
4. Ming and Qing Dynasty(1300AD-1900AD).

In Chinese history, the southward migration of the northern minorities and wars happened frequently during these four “cold periods”. Contrast to the climate in the large area of northern China, which was suddenly turned cold at that time and made it unsuitable for the surviving of human beings, the climate in the south, was quite favorable with warm and wet weather, accompanied by rich resources. For the sake of surviving, the northern minorities started their southward movement in history, during which fighting for living space became the central conflicts between them and the people in the central plains of China. Despite the frequency of battles, they actually enhanced the convergences between different races and fastened the development of Chinese culture. However, if the northwest people were moving to the other parts of China right now, I don’t think it would contribute to the communication and prosperous cultural development. Instead, the regions concerned will be much more crowded because of these new comers, and inevitably, a series of social issues would come up as a result of the increase in population. In that case, what kind of policy should the government have to deal with these people who are in the areas which have already been overpopulated?

所谓惊人指什么啊？

What does the word "striking" here refer to?

你们这个中外对话怎么这么罗嗦，反垃圾的字母竟然要写7个！等我写完就超时了，发不出去，还得刷新一遍再重写重发。
强烈抗议！最多4个！

Why has chinadialogue created such a long text to prevent spam. Is typing 7 letters necessary? I failed to post my comment, as it timed out after I finishing typing the long text. As such, I had to repost my comment. I strongly protest it and I think 4 letters should be the most.

同意2号评论，看来看去也没发现什么惊人，都说什么呢？

I agree to the comment 2. I had a look of all the pictures, I did not see anything "striking" there.

可能是国内关于某某灾难，某某困境的写实照片都是将困难摆在突出的地位吧，所以我们看见一些似乎与困难没关系的照片时感情就不能得到升华了。其实这组照片里有描述“有水是多么的好”和“没有水会多困难”两种照片，也许作者希望通过二者的对比来触动读者吧。
loyi

It seems to me that most of China's photos about disasters emphasize solely the negative aspects, so we have trouble relating with photos that portray anything positive. In fact, there are two themes in this series of photos, namely "How great it is to have water" and "how hard it is without water". Maybe the author hopes to use the contrast between these two themes to influence readers.

這些照片真實記錄了新疆的發展 也真實記錄了人類試著想改變自然環境的前因後果 新疆省有許多冰原 也是許多中國河流的發源地 過度的開發 還有很多重金屬工業排放的污水流入上游的河水中 這些污水一路流入大海 整條江水都被這些化學物質污染了 從上游到下游 沿岸的人們靠水而生 他們喝著河水 用河水灌溉 這些污水 不只污染了大自然 也傷害了人民的健康
開發建設固然重要 可是環境還有人民的健康才是最重要的

王彥凱 Yan-Kai Wang

These photos document the development of Xinjiang Uygur Autonomous Region, as well as the consequences of unsuccessful attempts to adapt nature to human needs. There are a lot of glaciers inside Xinjiang, which is also the origin of many rivers of China. Excessive exploitation is a rampant problem. Another is that heavy metal discharged upstream causes the whole river to be polluted, all the way to the sea that the river flows into. Consequently the health of inhabitants living upstream and downstream, who drink the water and use it to irrigate their crop fields, is threatened. So economic development should always take a back seat to the public’s health and the environmental conservation. -Yan-Kai Wang