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首页> 外文会议>Second International Conference on Sustainable Agriculture for Food, Energy and Industry Vol.1 Sep 8-13, 2002 Beijing, China >Bush fires and Proposed control measures
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Bush fires and Proposed control measures

机译：布什大火和拟议的控制措施

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摘要

Bush burning resulting from bush fires is a major environmental problem in many countries. Results of a survey carried out between 1998 and 2000 in Ghana showed that, incidence of burning was lower in the forest zone than in the forest-savanna- transition (transition) ecological zone. The lower incidence of burning in the forest was partly attributed to greater concern and involvement of farmers in combating bush fires. The farmers were concerned because they grew long duration crops (e.g. cocoa, cassava and plantain) that could be destroyed by fire. Farmers in the transition zone, on the other hand, were less concerned because they had relatively little to lose when the bush was burnt. In this zone, most of the farmers grew short season crops that were harvested before the bush fires started. It was observed that, fire could not spread through fields that were cultivated in the minor season preceding the harmattan to crops such as groundnuts, soybean and cowpea. This is because such fields did not have enough residues to support burning. In the minor season of 2000, a strip of cowpea measuring 5 m wide was a planted around 15 different mucuna (Mucuna pruriens van utilis) fields. The strips effectively served as fire barrier and protected the mucuna fields from burning.
机译：丛林大火引起的灌木丛燃烧是许多国家的主要环境问题。 1998年至2000年在加纳进行的一项调查结果表明，森林区的燃烧发生率比森林大草原过渡（过渡）生态区低。森林中较低的焚烧发生率部分归因于农民的更多关注和他们参与扑灭丛林大火。农民之所以担心，是因为他们种植了长时间的农作物（例如可可，木薯和车前草），有可能被大火烧毁。另一方面，过渡区的农民则较少担心，因为他们在烧毁灌木丛后损失的相对较少。在该地区，大多数农民种植的短季作物是在丛林大火开始之前收获的。据观察，大火不可能扩散到在与大麻混为一谈的小季节之前种植的花生，大豆和cow豆等农作物。这是因为此类字段的残留物不足以支持燃烧。在2000年的一个较小季节，在15个不同的mucuna（Mucuna pruriens van utilis）田地上种植了一条宽5 m的cow豆。这些条带有效地充当了防火屏障，并保护了粘液田不被燃烧。

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