大多数人提起土壤都会不以为然，只是有“脏”的印象，然而，土壤却是人类环境极为重要的部分之一。土壤具有复杂的结构，独特的生物、化学和物理性质。它为初级生产者──植物提供水分和营养，从而为其它陆地生态系统提供了食物链的基础。除了极少部分食物来自水体，几乎所有 Most people will not agree with the soil, just a “dirty” impression, however, the soil is one of the most important parts of the human environment. Soil has a complex structure, unique biological, chemical and physical properties. It provides primary producers, plants, with water and nutrients that provide the basis for the food chain to other terrestrial ecosystems. Except for a very small part of the food comes from the body of water, almost all