Water reform is 'needed in Asia' 亚洲需要进行用水改革
文章来源:未知 文章作者:meng 发布时间:2009-08-18 06:21 字体: [ ]  进入论坛

Asia must reform its water use to feed 1.5 billion extra people by 2050, says a new report.


Asian farmers need to <a href=modernise1 their irrigation methods" width="226" border="0" src="/upimg/090818/4_063208_1.jpg" />
Asian farmers need to modernise their irrigation methods

The authors warn that without big changes to irrigation many nations will have to import food.

The report says that 94% of suitable land in South Asia is already being used for growing food.

According to their computer model the continent could obtain three quarters of the additional food it needs with better irrigation systems.

The report will be presented on Tuesday to the World Water Week conference in Stockholm.

The study was carried out by the International Water Management Institute and the United Nations Food and Agriculture Organization (FAO).

The researchers warn that some developing nations will have to import more than a quarter of the rice, what and maize2(玉米) they will need by 2050 and that this prospect3 will be politically risky4.

They outline three options for meeting the food needs of Asia's population.

The first is to import large quantities of cereals(谷类食品) from other regions, the second to improve and expand "rain-fed" agriculture and the third is to focus on irrigated5 farmlands.

Politically risky

The report warns that the first option is too politically risky and the second is impossible as suitable land is already in use in many areas.

Lead author Aditi Mukherji of the International Water Management Institute said: "Today, the option of expanding irrigated land area in Asia to feed a growing population is becoming increasingly problematic due to land or water constraints6(系统规定参数)."

The scenarios7 presented in the report do not factor in climate change which is likely to make rainfall more erratic(不稳定的,奇怪的).

The report recommends modernising the region's large scale irrigation systems which rely on surface water but have fallen into disrepair(破损,失修) through lack of investment.

Another suggestion is for governments to help individual farmers use cheap pumps to extract ground water for irrigation.


1 modernise modernise     
  • If it works,it would help to modernise the entire economy.这项(改革)一旦实施起效,将有助于整体经济的现代化进程。
  • They attempted in vain to modernise these antiquated industries.他们企图使这些陈旧的工业现代化,结果劳而无功。
2 maize q2Wyb     
  • There's a field planted with maize behind the house.房子后面有一块玉米地。
  • We can grow sorghum or maize on this plot.这块地可以种高粱或玉米。
3 prospect P01zn     
  • This state of things holds out a cheerful prospect.事态呈现出可喜的前景。
  • The prospect became more evident.前景变得更加明朗了。
4 risky IXVxe     
  • It may be risky but we will chance it anyhow.这可能有危险,但我们无论如何要冒一冒险。
  • He is well aware how risky this investment is.他心里对这项投资的风险十分清楚。
5 irrigated d5a480a57e6b6336cbbf24f1103448d2     
  • They irrigated their crops with water from this river. 他们用这条小河里的水浇庄稼。
  • A crop can be sown, weeded, irrigated, and fertilized uniformly. 一种作物可以均匀一致地进行播种,除草,灌溉和施肥。
6 constraints d178923285d63e9968956a0a4758267e     
强制( constraint的名词复数 ); 限制; 约束
  • Data and constraints can easily be changed to test theories. 信息库中的数据和限制条件可以轻易地改变以检验假设。 来自英汉非文学 - 科学史
  • What are the constraints that each of these imply for any design? 这每种产品的要求和约束对于设计意味着什么? 来自About Face 3交互设计精髓
7 scenarios f7c7eeee199dc0ef47fe322cc223be88     
  • Further, graphite cores may be safer than non-graphite cores under some accident scenarios. 再者,根据一些事故解说,石墨堆芯可比非石墨堆芯更安全一些。 来自英汉非文学 - 环境法 - 环境法
  • Again, scenarios should make it clear which modes are acceptable to users in various contexts. 同样,我们可以运用场景剧本来搞清楚在不同情境下哪些模式可被用户接受。 来自About Face 3交互设计精髓
TAG标签: water use reform Asia