乔灌草治理年限对红壤区土壤养分的影响  

Effects of Management Years of Trees,Shrubs and Grasses on Soil Nutrients in Red Soil Region

作　　者：毛兰花 查轩[1,3,2] 黄少燕[1,3] 刘根华 白永会[1,2] 张婧 姚冲[1,2] MAO Lanhua;ZHA Xuan;HUANG Shaoyan;LIU Genhua;BAI Yonghui;ZHANG Jing;YAO Chong(College of Geographical Science, Fujian Normal University, Fuzhou 350007;Institute of Geography, Fujian Normal University, Fuzhou 350007;State Key Laboratory of Subtropical Mountain Ecology Funded by Ministry of Science and Technology and Fujian Province, Fuzhou 350007)

机构地区：[1]福建师范大学地理科学学院,福州350007 [2]福建省亚热带资源与环境重点实验室,福州350007 [3]福建师范大学地理研究所,福州350007

出　　处：《水土保持学报》2018年第2期173-178,共6页Journal of Soil and Water Conservation

基　　金：国家重点研发计划项目"南方红壤低山丘陵区水土流失综合治理"(2017YFC05054);国家科技支撑计划项目"强度侵蚀区退化生态系统修复关键技术的研发与集成"(2014BAD15B02)

摘　　要：以退化红壤区4个不同治理年限的乔灌草混交治理措施的马尾松林地和未被治理的严重侵蚀退化马尾松林地为研究对象,研究不同治理年限的乔灌草治理措施对土壤养分特征的影响。研究表明:(1)土壤有机质、全N、全P含量变化范围分别为0.81~28.10g/kg,0.18~1.15g/kg,0.03~0.18g/kg,均随治理年限的增加呈上升趋势,增速规律为先快后慢;土壤全K含量变化范围为0.92~4.65g/kg,治理13年后全K含量最高在40—60cm土层,增速规律为先慢后快。(2)土壤养分与治理年限相关性分析显示,土壤有机质含量、全N含量与治理年限存在显著相关关系(P<0.05),土壤全P含量与治理年限存在极显著相关关系(P<0.01),土壤全K含量与治理年限没有相关性。研究认为,乔灌草混交治理措施下的马尾松林地土壤养分含量与治理年限具有相关性,可为生态治理与恢复提供科学依据。In degraded red soil area,taking the Pinus massoniana forest mixed by shrub and grass measures with 4 different management years as the object of study,and the unmanaged severely degraded pine as control,the effects of management years on soil nutrients were studied.The results showed that：（1）The range of soil organic matter,total nitrogen and total phosphorus contents were 0.81-28.10 g/kg,0.18-1.15 g/kg and 0.03-0.18 g/kg,respectively,and all contents increased with the increase of management duration,and first fast and then slow in increasing rates.Total potassium contents ranged in 0.92-4.65 g/kg,with the highest in the 40—60 cm soil layer after managed for 13 years,the increasing rate was first slow then fast.（2）There was a correlation between soil nutrient content and management years：management years gave a significant correlation with soil organic matter and total N contents（P〈0.05）,and a highly significant correlation with total P（P〈0.01）.But no correlation was observed between soil total K content and management years.These findings suggested that the soil nutrient contents of Pinus massoniana forest soil was related to the management years,and provided scientific basis for ecological management and restoration.

关 键 词：治理年限 马尾松林地 土壤养分 南方红壤区 

分 类 号：S157.5[农业科学—土壤学]