conversion of farmland to forest  退耕还林

converting farmland to forest and grassland  退耕还林草; 退耕还林

conversion from farmland to forest and grass  退耕还林(草)

conversion of cropland to forest and grassland  退耕还林草; 退耕还林还草

conversion of farmland to forestland  退耕还林

conversion of farmland to forests  退耕还林

convertion of farmland to forest or grass land pro  退耕还林还草

convertion of farmland to forest or grass land project  退耕还林还草

ecotone of grassland and farmland  农牧交错区

The project of converting sloping crolpand to forest and grassland  退耕还林还草工程

conversing farmland to forest and grass land  退耕还林还草

returning farmland to forest and grass  退耕还林还草

converting cropland to forest and grassland  退耕还林; 退耕还林还草

converting slope cropland to forest and grassland  退耕还林草工程

cropland to forest and grassland  退耕地

return to forest and grassland  还林还草

Returning cropland to forest and grassland  退耕还林草

Returning cultivated land to forest and grassland  退耕还林草

activation and conversion of methane  鼻爽清洗液; 甲烷活化转化