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红壤侵蚀区不同生态修复措施对凋落物量及其养分归还的影响
引用本文:刘文飞,樊后保,黄荣珍,李凤,肖龙.红壤侵蚀区不同生态修复措施对凋落物量及其养分归还的影响[J].水土保持学报,2012,26(1):58-61.
作者姓名:刘文飞  樊后保  黄荣珍  李凤  肖龙
作者单位:1. 南昌工程学院生态与环境科学研究所,南昌330099/江西农业大学园林与艺术学院,南昌330045
2. 南昌工程学院生态与环境科学研究所,南昌,330099
3. 泰和县水土保持站,江西泰和,343700
基金项目:江西省教育厅科技项目“不同生态修复措施林分‘碳汇’功能及效益研究”(GJJ09372);江西省教育厅青年科学基金项目(GJJ11251);江西省水利厅科技项目“赣中南红壤侵蚀区不同生态修复措施的固碳效益及其关键技术研究”(kt201027)
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/hm2,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/hm2,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/hm2,P为0.50~0.96kg/hm2,K为5.40~8.62kg/hm2,Ca为4.02~6.33kg/hm2,Mg为0.58~0.89kg/hm2。

关 键 词:红壤侵蚀区  马尾松  凋落物量  养分归还量

Impacts of Different Ecological Restoration Measures on Litter Production and Its Nutrient Fluxes in Red Soil Erosion Region
LIU Wen-fei,FAN Hou-bao,HUANG Rong-zhen,LI Feng,XIAO Long.Impacts of Different Ecological Restoration Measures on Litter Production and Its Nutrient Fluxes in Red Soil Erosion Region[J].Journal of Soil and Water Conservation,2012,26(1):58-61.
Authors:LIU Wen-fei  FAN Hou-bao  HUANG Rong-zhen  LI Feng  XIAO Long
Institution:1.Research Institute of Ecology & Environmental Sciences,Nanchang Institute of Technology,Nanchang 330029;2.College of Landscape and Art,Jiangxi Agricultural University,Nanchang 330045;3.Station of Soil and Water Conservation at Taihe,Taihe,Jiangxi 343700)
Abstract: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/hm2,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/hm2,respectively,and following order was:Pinus massonian without disturbance>Pinus massonian forest with bamboo-burl-groove>Pinus massonian forest with planting grass and bamboo-burl-groove>Pinus massonian forests.N flux of litterfall in the four ecological restoration measures ranged between 23.33 kg/hm2 and 47.60 kg/hm2,K ranged between 5.40 kg/hm2 and 8.62 kg/hm2,Ca ranged between 4.02 kg/hm2 and 6.33 kg/hm2,Mg ranged between 0.58 kg/hm2 and 0.89 kg/hm2,P ranged between 0.50 kg/hm2 and 0.96 kg/hm2.
Keywords:red soil erosion region  Pinus massonian  litter production  nutrient flux
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