一、退耕还林（草）工程建设的目标退耕还林（草）工程是国家实施的“六大”生态建设工程之一，其最终目标是解决重点地区的水土流失问题，同时要与群众的脱贫致富工作结合起来，实现可持续发展。二、林草植被的生态作用还多少林，还多少草，怎么还？是大家最关心的问题。从生? I. Goal of Conversion of Cropland to Forest and Grassland The project of returning farmland to forestland or grassland is one of the “six major” ecological construction projects implemented by the state. Its ultimate goal is to solve the problems of soil and water loss in key areas and to meet the needs of the masses Get rid of poverty and get rich work together to achieve sustainable development. Second, the ecological role of forest and grass vegetation How many forests, but also how much grass, how also? It is everyone’s most concern. From students?