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首页> 外文期刊>Dynamic Soil, Dynamic Plant >Potential of Brazilian Amazon Soils for Food and Fiber Production
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Potential of Brazilian Amazon Soils for Food and Fiber Production

机译：巴西亚马逊土壤在粮食和纤维生产中的潜力

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The Amazon region has the world's largest tropical forest. Its conservation is of high importance to maintain the balance of climatic conditions and the diversity of the flora and fauna of this still largely unexploited region. In view of the increasing concern for the environment and growing world demand for food and fiber, and since this regions represents one of the last agricultural frontiers, there is a need for sustainable management to produce food and fiber. The objective of thi& review is todiscuss the region's potential and the problems related to the use of these areas caused by anthropogenic activities. Brazilian environmental laws permit the use of Amazon up to 20% of its total territory. The Amazon region contains extensive savanna areas, with eutrophic soils, and 6.0 million hectares floodplains. However, the majority of soils are characterized by high acidity and low nutrient availability (0.4 billion ha — 86% of the area), and in the primary forest the dynamic of organic matter is responsible for recycling nutrients. Unfavorable climate conditions in the humid tropical part, with periods of intense rainfall and flooding, restricting cultivation of annual crops, is another problem of the region, In the more elevated upland regions, where the climate is more favorable, the planting of exotic and native tropical fruit species in combination or monoculture has great productive potential.
机译：亚马逊地区拥有世界上最大的热带森林。它的养护对于保持气候条件的平衡以及这个仍未被充分利用的地区的动植物的多样性非常重要。鉴于对环境的日益关注以及世界对食物和纤维的需求不断增长，并且由于该地区代表了最后的农业前沿之一，因此需要对生产食物和纤维进行可持续管理。审查的目的是讨论人为活动引起的该地区的潜力以及与这些地区的使用有关的问题。巴西环境法律允许使用亚马逊最多占其总领土20％的土地。亚马逊地区有大片稀树草原地区，有富营养化的土壤和600万公顷的洪泛区。但是，大多数土壤的特点是酸度高，养分利用率低（4亿公顷，占该地区的86％），在原始森林中，有机物的动态是养分循环的原因。该地区的另一个问题是，在潮湿的热带地区气候条件不利，降雨和洪水泛滥，限制了一年生作物的种植。在气候更为有利的高地高地地区，外来和本地种植结合或单一栽培的热带水果种类具有巨大的生产潜力。

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