Evaluación de prácticas de conservación de suelos forestales en México: caso de las zanjas trinchera

The results and the literature review helped to identify certain environmental conditions under which the construction of ditches may be adequate: arid or semi-arid climate (aprox. 300 mm average rainfall), slope range up to 40%, shallow soils (less than 20 cm) without a clay horizon and sparse and discontinuous vegetation. These recommenda-tions were presented and discussed with decision makers and were subsequently introduced into the National Forest Program (PRONAFOR).