黄土高原残塬沟壑区荒坡地可持续治理模式研究

Sustainable Control Model of Waste-slope-land in Valley and Gully Areas on Remained Highland of the Loess Plateau

根据荒坡地不同坡度的生境特点,采用针对性的工程措施与适宜的生物措施结合,研究提出了以兼用型速生优质饲草——草为生物措施的先行草种,解决了工程措施后当年大面积裸露地表水土流失严重的问题;与核桃、刺槐、沙棘等乔灌林木优化组合,形成当年、短期和长期持续稳定的综合治理模式,达到生态、社会、经济效益的协调统一;同时为当地舍饲畜牧养殖业的发展提供大量优质饲草,实现山川秀美与畜牧业发展双赢。

According to habitat of the wasteslopeland at different slope steepness, Humulus scandens was studied and put out as a pioneer grass species while combining enginaering with biological measures are taken. The species is with the characteristics of growing fast and can be taken as fine double quality forage. Problems like engineering measures make the soil surface uncovered in large scale and the soil erosion and water loss is very serious in the second semiyear could be solved. Optimum combination with the arbor and bush tree species, such as walnut, seabuck and thorn, the comprehensive control model was formulated, which was in continued and stable function in the same year, short and long term. The purpose of making the benefits of ecology, economics and sociology coordinateunited could be reached. In the same time, lots of fine quality forage was supplied for developing the stableraising livestock. Winwin of realizing mountains and rivers graceful and developing livestock could be got. 