New laws were passed immediately that achieved the same result of resting soil and providing flood-control measures, but which were based on the principle of soilconservation.
新的法律立即通过，达到了同样的结果，使土壤留下来和提供防洪措施，但这是基于土壤保护的原则。
2
The function of forest floor on water conservation, nutrient supply, promoting biological respiratory intensity and soil development are discussed.
探讨了森林地层在水土保持、养分供应、促进生物呼吸强度和土壤发育等方面的作用。
3
One method of soilconservation is the use of windbreaks.