中文摘要：

通过野外定位监测和取样分析,探讨在红壤侵蚀区采取4种生态修复模式（马尾松林、修沟种草马尾松林、修竹节沟马尾松林和封禁马尾松林）27年后,其林分凋落物量及其养分归还动态。结果表明,4种修复措施林分的年凋落物总量分别为3 267.30,3 530.58,3 937.67,4 997.88kg/hm^2,说明封禁处理对于提高林分凋落物量效果显著。各修复措施凋落物量呈现明显的季节动态,全年凋落物呈现单峰型,峰值均出现在8月份。4种修复措施（马尾松林、修沟种草、修竹节沟和封禁）凋落物的5种元素（N、P、K、Ca、Mg）归还总量分别33.83,38.90,48.39,64.40kg/hm^2,大小顺序为：封禁〉修竹节沟〉修沟种草〉强干扰马尾林,其中N元素的年通量变化为23.33～47.60kg/hm^2,P为0.50～0.96kg/hm^2,K为5.40～8.62kg/hm^2,Ca为4.02～6.33kg/hm^2,Mg为0.58～0.89kg/hm^2。

英文摘要：

Based on field investigation and lab analysis,after 27 years later,litterfall production and its nutrient fluxes were analyzed in red soil erosion region with four kinds of ecological restoration measures as Pinus massonian forests,Pinus massonian forest with planting grass and bamboo-burl-groove,Pinus massonian forest with bamboo-burl-groove,Pinus massonian without disturbance.Result showed that annual litterfall amount in the four ecological restoration measures was estimated at 3 267.30,3 530.58,3 937.67,4 997.88 kg/hm^2,respectively,showing a significant increase with Pinus massonian without disturbance.The year dynamic of litterfall for four ecological restoration measures showed a single peak in summer（August）.Annual fluxes of the five nutrient elements via litter in the four ecological restoration measures were 33.83,38.90,48.39,64.40 kg/hm^2,respectively,and following order was：Pinus massonian without disturbancePinus massonian forest with bamboo-burl-groovePinus massonian forest with planting grass and bamboo-burl-groovePinus massonian forests.N flux of litterfall in the four ecological restoration measures ranged between 23.33 kg/hm^2 and 47.60 kg/hm^2,K ranged between 5.40 kg/hm^2 and 8.62 kg/hm^2,Ca ranged between 4.02 kg/hm^2 and 6.33 kg/hm^2,Mg ranged between 0.58 kg/hm^2 and 0.89 kg/hm^2,P ranged between 0.50 kg/hm^2 and 0.96 kg/hm^2.