闽西北不同经营时间毛竹林土壤渗透性研究 Soil Infiltration Characteristics of Phyllostachys pubescen

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| E/TN q;r4O*Os3S{0摘要:以福建省永安市不同经营时间的劈草、施肥、灌水毛竹林为研究对象,对不同经营时间土壤渗透性能进行了研究.结果表明,不同劈草、施肥和灌溉时间的毛竹林土壤渗透性变化规律不同.劈草和灌水毛竹林,随着经营时间的延长,土壤渗透性能呈明显的下降趋势.其中,劈草30年的毛竹林土壤初渗率、稳渗率、平均渗透速率和渗透总量与未劈草毛竹林相比,下降了71.43%,69.55%.70.43%和89.80%;灌水10年毛竹林土壤初渗率、稳渗率、平均渗透速率和渗透总量与未灌水毛竹林相比下降了53.36%,53.99%.53.92%和60.03%.在施肥毛竹林地中随着施肥时间的延长,毛竹林土壤渗透性能有升高的趋势,施肥13年毛竹林土壤初渗率、稳渗率、平均渗透速率和渗透总量比未施肥毛竹林上升了29.75%,5.45%,20.99%和10.50%.相关性分析表明,土壤渗透性的改变主要与土壤非毛管孔隙度、有机质、水解氮和速效磷的变化密切相关.通过逐步回归分析,得到初渗率、稳渗率、平均渗透速率和渗透总量的多元回归模型,经检验模型达到显著水平,土壤渗透性指标的变化幅度可以通过非毛管空隙度、土壤有机质、水解氮、速效磷的变化来反映.在回归分析过程中,均为非毛管空隙度首先进入,反映了土壤渗透能的改变主要是由非毛管空隙度的变化决定的.Abstract:The infiltration characteristics and the factors that can affect the infiltration characteristics of soil in bamboo forest with different operating time were researched in Yongan of Fujian. The result showed that the soil infiltration characteristic were variation with different operating time of herb chopping, fertilization,and irritation. The soil infiltration characteristics were decreased with time in bamboo forest with herb chopping and irritation, while increased in bamboo forest with fertilization. The initial infiltration rate, stable infiltration rate, average infiltration rate and accumulative infiltration of 30 years herb chopping decreased by 71.43%, 69.55%, 70.43%, and 89.80%, and decreased by 53.36%, 53.99%, 53.92%, and 60.03% in bamboo forest with irritation for 10 years, respectively. In the bamboo forest with 13 years fertilization, the initial infiltration rate, stable infiltration rate, average infiltration rate and accumulative infiltration were creased by 29.75%, 5.45%, 20.99%, and 10.50%, respectively. There were significant correlation between change of soil infiltration characteristics and the change of non-capillary pore, organic matter, watersoluble potassium, and available phosphor. Multiple regression models were obtained by stepwise regression analysis. The regression coefficients of model existed statistic significant level. The change of soil infiltration characteristics can be reflected by the change amount of non-capillary pore, organic matter, water-soluble potassium, and available phosphor. In the process of stepwise regression analysis, the non-capillary pore entered firstly. The changes of soil infiltration were determined by the non-capillary pore mainly.

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闽西北 经营 时间 毛竹林 土壤渗透性能 渗透性研究 Operating Time Different infiltration rate soil infiltration bamboo forest stepwise regression analysis 渗透速率 operating time 施肥 significant 空隙度 potassium different regression models水利论文C:sgv*g

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以福建省永安市不同经营时间的劈草、施肥、灌水毛竹林为研究对象,对不同经营时间土壤渗透性能进行了研究.结果表明,不同劈草、施肥和灌溉时间的毛竹林土壤渗透性变化规律不同.劈草和灌水毛竹林,随着经营时间的延长,土壤渗...水利论文+x'ccgz

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