马尾松不同抚育方式对林地生产的影响

摘要

对马尾松幼林采用全面劈草、全面劈草局部松土、全面除草松土3种抚育方式对林地植被生长、表层土壤变化及幼林生长的影响进行研究,结果表明:植被覆盖率、植被枯落物随抚育强度提高而降低,而土壤侵蚀则随抚育强度提高而增强,马尾松幼林生长与抚育强度提高成正比.在南方马尾松集约经营的山区,宜提倡带状抚育,既可促进幼林生长,又能维护地力.%Experiments were conducted on effect of three tending methods(cutting grass, cutting grass+loosening soil partly, weeding+loosening soil) on vegetation growth, surface soil change and pine growth in Pinus massoniana plantations. The result showed that vegetation rate and little decreased with intensity of tending, while soil erosion increased. Pine growth had positive relation with intensity of tending. Strip tending was recommended with advantages of promoting pine growth and soil productivity maintenance for the pine production area in the southern China.