砍伐

Some new rules are expected to reduce the number of trees cut in the National Forests.

有望出台一些新制度来减少砍伐国家森林中的树木。

Mention climate change or the logging of old-growth forests and they will look at you as if you were stuck to the bottom of their shoes.

对他们提起全球环境变化或者森林砍伐，他们就用那种眼观看你，好像你是他们鞋底上粘的什莫东西。。

Mentionclimate change or the logging of old-growth forests and they will lookat you as if you were stuck to the bottom of theirshoes.

对他们提起全球环境变化或者森林砍伐，他们就用那种眼观看你，好像你是他们鞋底上粘的什莫东西。。

If the big things get hammered (96 percent of the old-growth redwood forests have been cut, though most of the remaining stands are protected), what hope is there for the small ones?

如果大的物种都被破坏（尽管现存绝大多数红树林被保护起来，但96％较老的红树林已经被砍伐），那还有什么希望留给小的物种？

In 1992 only about 15 percent of the old-growth forests that once covered the United States remained, and some conservation groups fear that at current rates of cutting, most of the old-growth forests of the United States will be gone within 15 to 20 years.

到1992年，覆盖美国的原始森林只有15%依然存在，很多保护团体担心，依目前的砍伐速度，美国大部分原始森林会在15到20年内消失。

The primary driving force behind deforestation is cattle grazing and clearing land to grow soybeans and other grains to feed factory-farmed chickens, pigs, and fish.

森林砍伐背后的主要驱动力是放牧牛只和开垦土地，用来种植大豆和其他谷物以饲养工厂化养殖的鸡、猪和鱼。

All this has radically changed with the introduction of "modern" modes of life such as the Dutch pelt traders during the 17th and 18th centuries that resulted in the near extinction of the Sika Deer, the subsequent large-scale import of Chinese farmers to open and work rice and sugar plantations, the exploitation of camphor trees by the Qing and Japanese governments, and of course the horribly exploitative and short-sighted logging of two and three thousand year old trees, first by the Japanese, and then even more insidiously by the Chinese through the later decades of the twentieth century.

所有这一切却因为现代生活模式的引进而改变，例如17，18世纪荷兰的毛皮商人导致梅花鹿的灭绝，随后大量的中国农民进入台湾，开垦土地种植稻米和甘蔗，清朝与日本政府大量砍伐樟树榨取樟脑，以及在二十世纪从日本殖民开始，到国民政府几十年来短视近利地对二～三千年古树滥垦滥伐。

Wood is another source of energy, but it is expensive, and the cutting of large forest areas also causes environmental problems, such as mud slide and erosion.

木材是另一种能量来源，但它价格昂贵，并砍伐大面积森林地区，也造成环境问题，如泥土滑坡和水土流失。

This is exacerbated by local deforestation, which has altered the micro-climate and reduced rainfall.

地方森林砍伐改变了微气候，使降雨减少，从而加重了问题。

They are using the primitive slash-and-burn farming methods, the earliest cultivated crops such as corn and sweet potato, and mastered the turkeys.

他们采用原始的砍伐和燃烧的耕作方式，最早种植诸如玉米和甘薯作物，并掌握了火鸡。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。