不同水土保持措施对油茶幼林土壤侵蚀的影响

摘要

Taking Camellia oleifera plantation in purple soil erosion as research obj ects,the effects of different soil and water conservation measures for young plantation of Camellia oleifera on soil erosion were compared.Result shows that applying measures for soil and water conservation restricts growth of young plantation of Camelliaoleif-era,increases obviously the vegetation coverage and decreases runoff & sediment,in which C2 mode(planting Ca-melliaoleifera in Fish-Scale pits+planting Cassiarotundifolia)have more obvious effect.Applying measures for soil and water conservation have different effects on soil nutrient content.C1 mode (grass strips+planting Cassia rotundifolia)stimulate nutrient accumulation and C2 mode decrease soil nutrient content.In general,C1 mode is worth to be promoted in strong erosion land for purple soil.%以宁化紫色土侵蚀区油茶林为研究对象,比较分析油茶幼林不同水土保持措施对土壤侵蚀的影响。结果表明：水保措施的施用限制了油茶幼林的生长；水保措施的施用明显提高了地表植被覆盖度；水保措施的施用明显减少了径流量和泥沙量,其中C2模式(鱼鳞坑种植油茶+种植圆叶决明)的效果更为明显；水保措施的施用对土壤养分的影响存在差异,其中C1模式(草带+鱼鳞坑种植油茶+种植圆叶决明)促进养分的累积,而 C2模式则降低土壤养分含量。总的来说,C1模式是一个值得在紫色土强度侵蚀区推广的水土保持措施。