关帝林区天保一期工程水土保持效益研究

Research on Soil and Water Conservation Benefits of First Phase Natural Forest Protection Project in Guandi Forest

以关帝林区天保一期工程为研究对象,在三道川林场、龙兴林场境内布设径流场,对油松、落叶松、桦树、杨树、灌木林及荒山荒地(对照区)6个类型进行监测、计算。结果表明:从2000年到2010年,关帝林区固土总量达1 614.3×104t;桦树、杨树、油松、灌木林单位面积固土量相差不大,但都优于落叶松林。

By taking first phase natural forest protection project in Guandi mountain as the research object, runoff field were laid in 6 forest types which were pine, larch, birch, poplar, shrub and barren wasteland in Sandaochuan Forest and Longx- ing Forest and their data were calculated. The results showed that the soil fixation amount was 1 614. 3 × 104 t from 2000 to 2010; the soil fixation amounts of birch, poplar, pine, shrubbery, per unit area had little difference, but they were better than that of larch.