The researcher of American Iowa Ministry of Agriculture said recently, although the mankind was change of climate of keep within limits to make a variety of effort, but the possibility next to nothing that these act produce the result in coming 50 years. Area of main to the whole world agriculture expects the article the change that will produce undertook limitting. Say, controlling greenhouse gas to discharge is method of a kind of when affect climate change lasting effect, its action just can be reflected after 50 years, accordingly we must learn get used to future 50 years inside the change that climate will appear.

Scientists are raised to rain model the research that the suitabiltiy of dry farming did development. They express, the rain that climate change causes is raised model appropriate index change can affect dry farming the whole world is major the provisionment ability of the area.

Grain production needs to expend many water natural resources. Agriculture should obtain good crop, appropriate soil and landform also are essential condition. Whether is an area raised at developing rain aptly model dry farming, depend on local rainfall, agriculture can use soil, and comfortable the landform that produces at agriculture. Suit to develop rain to raise highly on the world model south of the European share that the area of dry farming includes territory of ministry of American Chinese and Western and big Campagna, Europe, Russia, India, southeast Asia, Brazil and the eastpart part (contain Argentine Pengbasi.

Rain is raised model dry farming area population density is normally bigger, be like the eastpart part of Europe, United States, India, China and southeast Asia. And the Mexican south with likewise concentrated population, middle east, Nile is coastal area of and other places, do not have development rain to raise however model the condition of dry farming, because this irrigates to other means or food enters the mouth depend on degree taller.

Change of the climate between U.N. government is special committee (IPCC) the change that issuance newest report summarized pattern of 21 centuries rainfall to may appear. Because soil and landform won't be changed, rain is raised model the appropriate index of dry farming grows completely by crop the rainfall change of season will decide, rainfall decreases to be able to bring about suitabiltiy to reduce normally. Nevertheless, rainfall grow in quantity can not make suitabiltiy is strengthened certainly however. If rainfall causes more,big damage caused by waterlogging is killed, so appropriate index can fall.

IPCC of have the aid of is forecasted to what rainfall changes, researcher produces those who undertook a simplification to evaluate to the agriculture of global future:

The United States is mid, make the same score place area greatly especially, agricultural production drops probably moderately.
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