那木风蚀小流域土壤风蚀严重 ,经采取封、堵、拦等措施对其进行治理、开发 ,形成了乔、灌、草、田复合型生态经济体系。植被覆盖度已由治理前的 0～ 30 %恢复到 82 6 % ;风蚀得到了控制 ,风蚀模数比裸沙地 (对照 )减少了 94 6 %～ 99 7% ;林内 1m高的风速降低了 42 9%～ 72 2 % ;农、林、草各类沙地每公顷年均净效益为 1 1 0 8～ 6 0 65元 The wood wind erosion watershed soil erosion serious, by taking the closure, blocking, bar and other measures to its governance, development, the formation of the Joe, irrigation, grass, field composite eco-economic system. The vegetation coverage has been restored from 0-30% to 82.6% before the treatment; the wind erosion is controlled and the erosion modulus is reduced by 94.6% -99.7% compared with the bare sandy land (control); and the wind speed at the height of 1m in the forest is reduced 42 9% -72 2%. The annual average net benefit per hectare for various types of sandy land in farming, forestry and grassland was 110.8-6605 yuan