在许多地区，化肥与农药的过度使用已经造成土壤营养成分流失、过度酸化，而且污染了河流与湖水。
Overuse of fertilizer and pesticides has in many areas stripped the soil of nutrients or made it too acidic, as well as contributing to river and lake pollution.
一旦扎根土壤，灌木林地就会生长茂盛，特别是在北极地区，因为北极地区的灌木丛比其他植物更善于利用土壤中的营养成分。
Once is established, shrubland thrives, particularly in the Arctic, because Arctic shrubs are good at taking advantage of increased nutrients in the soil, better than other Arctic plants.
该地区的土壤退化主要表现为营养成分的减少，有害的盐碱成份的增加。
Soil degradation in this region mainly expressed decrease of nutrition element and increase of salt and alkali.
树叶和细枝具有更多的营养成分，若将它们留在森林，可使土壤恢复元气。
Leaves and twigs have high concentration of nutrients that, if left In the forest, revitalize the soil.
通过破坏土壤中营养成分的输送，重金属也威胁着森林的成长。
Heavy metals also threaten the growth of forests by disrupting the supply of nutrients in the soil.
土壤酶活性以及微生物数量的提高通过促进养分循环过程间接对果实营养成分和产量产生积极的影响。
The increase of soil enzyme activity and microorganism amount indirectly bring positive effects on fruit quality and yield by promoting nutrition circulation courses.
土壤主要营养成分及土壤物理性状则有随林分密度降低而改善的趋势。
Conversely, the nutrition and soil physical property were enhanced with the decrease of density.
大火也有益于植物的生长，因为它减少了疾病地传播，从燃烧后的植物中释放营养成分到土壤促进生长。
Wildfires can also benefit plant growth by reducing disease spread, releasing nutrients from burned plants into the ground and encouraging new growth.
大火也有益于植物的生长，因为它减少了疾病地传播，从燃烧后的植物中释放营养成分到土壤促进生长。
Wildfires can also benefit plant growth by reducing disease spread, releasing nutrients from burned plants into the ground and encouraging new growth.
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