But croplands to forestland and grassland conversion should be done in such a way that vegetation should be planted according to the quantity and spatial distribution of soil moisture on slope lands.

• 但坡地退耕还林还草必须了解各种退耕林草对土壤水分循环与转化的影响以及土壤水分的演变过程,并依据土壤水分的数量以及坡面上的分布进行相应的林草配置。