黄土残塬区荒坡地林草优化组合治理模式研究

针对荒坡地不同坡度的生境特点,研究提出了以兼用型速生优质饲草——艹律草为先行草种与核桃、刺槐、沙棘等乔灌林木优化组合的治理模式,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,形成了当年、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。对于广阔的西部地区的荒坡治理与开发具有重要的借鉴价值和应用价值。

Research on the Model of Optimum Combination of Forest and Forage of the Waste-slope-land in the Valley and Gully Area in the Remained Highland of the Loess Plateau

Based on the habitat of the waste-slope-land with different degree, Humulus scandens was studied and put out as the forerunner grass species . The species is the characteristics of growing fast and can be taken as fine double quality forage. The problem of the fact that the 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 is solved. Optimum combination with the arbor and bush tree species, such as walnut, sea-buck and thorn, the comprehensive control model is formulated, which is 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 is reached. In the same time, lot of fine quality forage was supplied for developing the stable-raising livestock. Dually-wining of realizing mountains and rivers graceful and developing livestock have done. The research result is of very important reference and application value in the broad west area.