Each configuration may also offer "local dimming.
Brown is president of the Worldwatch Institute, a nonprofit institute that raises awareness about global environmental problems.
In the following viewpoint, excerpted from his book Who Will Feed China?: The country will have to import increasing amounts of grain to feed its people, which will lead in turn to worldwide increases in the price of food.
As you read, consider the following questions: We often hear that the entire world cannot reasonably aspire to the U. Most people accept these propositions. Yet, little is said about what will actually limit the growth in human demands.
Increasingly, it looks as though our ability to expand food production fast enough will be one of the earlier constraints to emerge. This is most immediately evident with oceanic fisheries, nearly all of which are being pushed to the limit and beyond by human demand.
Water scarcity is now holding back growth in food production on every continent. Agronomic limits on the capacity of available crop varieties to use additional fertilizer effectively are also slowing growth in food production.
A Worldwide Increase in Food Prices Against this backdrop, China may soon emerge as an importer of massive quantities of grain—quantities so large that they could trigger unprecedented rises in world food prices. If it does, everyone will feel the effect, whether at supermarket checkout counters or in village markets.
Price rises, already under way for seafood, will spread to rice, where production is constrained by the scarcity of water as well as land, and then to wheat and other food staples. It will be tempting to blame China for the likely rise in food prices, because its demand for food is exceeding the carrying capacity of its land and water resources, putting excessive demand on exportable supplies from countries that are living within their carrying capacities.
But China is only one of scores of countries in this situation. It just happens to be the largest and, by an accident of history, the one that tips the world balance from surplus to scarcity. They have also assumed that rapid growth in food production in China would continue indefinitely.
But on this latter front, a closer look at what happens when a country is already densely populated before it industrializes leads to a very different conclusion.
In this situation, rapid industrialization inevitably leads to a heavy loss of cropland, which can override any rises in land productivity and lead to an absolute decline in food production. Lessons from Japan, South Korea, and Taiwan Historically, there appear to be only three other countries that were densely populated in agronomic terms before industrializing— Japan, South Korea, and Taiwan.
The common experience of these three gives a sense of what to expect as industrialization proceeds in China. For instance, the conversion of grainland to other uses, combined with a decline in multiple cropping in these countries over the last few decades, has cost Japan 52 percent of its grain harvested area, South Korea 46 percent, and Taiwan 42 percent.
As cropland losses accelerated, they soon exceeded rises in land productivity, leading to steady declines in output. In Japan, grain production has fallen 32 percent from its peak in For both South Korea and Taiwan, output has dropped 24 percent sincethe year when, by coincidence, production peaked in both countries.
While production was falling, rising affluence was driving up the overall demand for grain. As a result, bythe three countries were collectively importing 71 percent of their grain.
Exactly the same forces are at work in China as its transformation from an agricultural to an industrial society progresses at a breakneck pace. Its area of grainland per person of 0. Loss of Cropland and Irrigation Water Building the thousands of factories, The entire section is 2, words.LED Troubleshooting - Wiring Wiring mistakes are the most common of all LED lighting issues.
Typically if your LED lights simply "don't work" it is not because the products are defective but due to a basic wiring mistake or overlook. LED lighting manufacturers in China and Some details on LED exports from China.
You already know that China is the largest exporter of LED lights in the world. In the month of January in , the total export of LED products was billion dollars. China optimists—the sensible ones, anyway—don’t diminish the scale of the task.
Rather, they note that the Chinese government has been well aware of the problems for years and has been. In practice, Mao Zedong Thought is defunct inside China aside from anecdotes about the CPC's legitimacy and China's revolutionary origins.
Of those that remain, Mao's followers regard the Deng Xiaoping reforms to be a betrayal of Mao's legacy.
China's environmental problems, from air pollution in Beijing to cancer villages in the far western provinces, are as vast as the country itself.
The scale of urbanization in China is without precedent in human history. The transformation is also complex and nuanced, says Yale’s Karen Seto, with cities taking different approaches to environmental issues, pace of development, and global connections.
China’s extraordinary economic boom has.