吉林省扶余、前郭、长岭、乾安四县,位于松辽平原中部,由于新构造运动形成长岭弧形隆褶带和长春拱形隆起及二松河间台地,在台地边缘植被很差,水土流失严重,冲沟发育,沟深达20～40米,上游冲毁村屯和耕地,下游淤塞河道,淹埋农田,堵塞交通,危害颇重,急待治理。 1984年开展小流域治理,修建谷坊工 Jilin Province, Fuyu, Qian Guo, Changling, Qian’an four counties, located in the central Songliao Plain, the formation of the Changling arch ridge and Changchun arching uplift and the Songjiang inter-platform, the vegetation at the edge of the table is very Poor soil and water loss, gully development, ditch depth of 20 to 40 meters, the upper reaches of villages and farmlands washed away, downstream silting rivers, flooding farmland, traffic congestion, quite dangerous and urgent treatment. In 1984 to carry out small watershed management, construction Valley workers