首页
登录
职称英语
Organic agriculture is a relatively untapped resource for feeding the Earth’s
Organic agriculture is a relatively untapped resource for feeding the Earth’s
游客
2023-08-08
30
管理
问题
Organic agriculture is a relatively untapped resource for feeding the Earth’s population, especially in the face of climate change and other global challenges. That’s the conclusion I reached in reviewing 40 years of science comparing the long-term prospects of organic and conventional farming.
The review study, "Organic Agriculture in the 21st Century," is featured as the cover story for the February issue of the journal Nature Plants. It is the first to compare organic and conventional agriculture across the main goals of sustainability identified by the National Academy of Sciences: productivity, economics, and environment.
Critics have long argued that organic agriculture is inefficient, requiring more land to yield the same amount of food. It’s true that organic farming produces lower yields, averaging 10 to 20 percent less than conventional. Advocates contend that the environmental advantages of organic agriculture far outweigh the lower yields, and that increasing research and breeding resources for organic systems would reduce the yield gap. Sometimes excluded from these arguments is the fact that we already produce enough food to more than feed the world’s 7.4 billion people but do not provide adequate access to all individuals.
In some cases, organic yields can be higher than conventional. For example, in severe drought conditions, which are expected to increase with climate change in many areas, organic farms can produce as good, if not better, yields because of the higher water-holding capacity of organically farmed soils.
What science does tell us is that mainstream conventional farming systems have provided growing supplies of food and other products but often at the expense of other sustainability goals.
Conventional agriculture may produce more food, but it often comes at a cost to the environment. Biodiversity loss, environmental degradation, and severe impacts on ecosystem services have not only accompanied conventional farming systems but have often extended well beyond their field boundaries. With organic agriculture, environmental costs tend to be lower and the benefits greater.
Overall, organic farms tend to store more soil carbon, have better soil quality, and reduce soil erosion compared to their conventional counterparts. Organic agriculture also creates less soil and water pollution and lower greenhouse gas emissions. And it’s more energy-efficient because it doesn’t rely on synthetic fertilizers or pesticides.
Organic agriculture is also associated with greater biodiversity of plants, animals, insects and microorganisms as well as genetic diversity. Biodiversity increases the services that nature provides and improves the ability of farming systems to adapt to changing conditions.
Despite lower yields, organic agriculture is more profitable for farmers because consumers are willing to pay more. Higher prices, called price premiums, can be justified as a way to compensate farmers for providing ecosystem services and avoiding environmental damage or external costs. [br] What is the critics’ argument against organic farming?
选项
A、It cannot meet the need for food.
B、It cannot increase farm yields.
C、It is not really practical.
D、It is not that productive.
答案
D
解析
细节辨认题。第三段第一句指出,长期以来,批评人士一直认为有机农业效率低下,需要更多的土地才能产出等量的粮食。紧接着第二句进一步强调有机耕作的产量确实较低,平均比传统耕作少10%到20%。由此可见,批评人士反对有机农业的理由是它并非高产,故答案为D)。
转载请注明原文地址:https://tihaiku.com/zcyy/2909058.html
相关试题推荐
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
中国目前仍面临着人口多、资源少的严峻现实。鉴于中国目前的资源储备(resourcereserve),很多人认为我们仍要继续实行计划生育政策(family
师资teacherresources
[originaltext]Agricultureexpertshaveamessageforfarmersworldwide:Take
开发可再生资源todeveloprenewableresources
Theproblemofhowhealth-careresourcesshouldbeallocatedorapportioned,
Theproblemofhowhealth-careresourcesshouldbeallocatedorapportioned,
随机试题
[audioFiles]audio_eusz200712_001(20091)[/audioFiles]A、Toprotectherfromgetti
TheAmericanideaofrespectinghumanrightscamefromseveralsources.Fir
习近平总书记在文艺工作座谈会上的讲话提出在社会主义核心价值观中,最深层、最根本、
()属于反向市场。A、期货价格高于现货价格 B、期货价格低于现货价格 C、
主要功能是教育培养人才的组织是A药学教育和科研组织 B事业性药房组织 C药事
企业在成立初期,培训力量应集中于( )。A.组建管理团队 B.提高创业者的营
期货交易的当日收盘价格即为当日结算价。()
波形和频率等物理学特性影响。下列匹配中错误的包括()。多选A.响度一振幅
能诱导UDP-葡萄糖羧基转移酶合成从而减轻黄疸的药物是A.阿司匹林 B.青霉素
在建设工程施工过程中,因施工单位原因造成实际进度拖延,监理工程师确认施工单位修改
最新回复
(
0
)