通过长期连续的综合治理 ,长武县王东沟小流域农村产业结构由单一的粮食种植业发展为粮、果、工副业三元产业结构 ,建成了塬面农田防护林、沟坡经济林、沟谷水土保持防护林体系 ,连续 13年使年土壤侵蚀模数稳定在 80 0t/km2以下 ,农民年人均纯收入由 1986年建立试验示范区时的 2 3 0元上升至 2 0 0 3年的 2 70 1元 ,成为黄土高原沟壑区水土保持工作的样板 Through long-term continuous comprehensive management, the rural industrial structure of Wangdonggou watershed in Changwu County has developed from a single grain-growing industry to a ternary industrial structure of grain, fruit and sideline industry, and has built a three-component industrial structure of farmland shelterbelts, trench slope economic forests, To maintain the shelterbelt system, the annual soil erosion modulus was stable below 80 0t / km2 for 13 consecutive years. The per capita net income of peasants increased from RMB 230 to RMB 300 in the pilot demonstration area in 1986 to 2,701 in 2003 Yuan, a model for water and soil conservation in the gully area of ​​the Loess Plateau