桐庐生态公益林主要林分类型土壤抗蚀性研究 Study on Soil Anti-erodibility of Main Forest Types in Ton

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摘要:以浙江省桐庐县生态公益林定位监测站为依托,以土壤水稳性指数、团聚体特征、有机质含量为指标,研究了该区域不同林分类型土壤层的抗蚀性.结果表明:对比无林地,各生态公益林土壤均有较好的抗蚀性能,其中青冈林在表征抗蚀性的各指标上表现最好;土壤水稳性指数和有机质含量随土层厚度的增加而下降;土粒静水崩解率(S)随浸水时间(t)的变化过程呈三次多项式S=at+bt~2+ct~3 +d函数关系;选取土壤水稳性指数、团聚度、分散率、>0.25 mm水稳性团聚体含量、有机质含量为评价指标,以灰色关联分析为基础,构建了土壤抗蚀性等级评价体系,对研究区各样地土壤抗蚀性进行定性评价,结果显示青冈林土壤抗蚀性等级为较强,香樟林、杉木林、马尾松林、毛竹林、板栗林土壤抗蚀性等级为中等,无林地抗蚀性等级为较弱.Abstract:Base on the data of located ecological monitoring station of non-commerical forests in Tonglu county, Zhejiang province, used soil water-stable index,aggregate characteristic, and organic matter content as index ,soil anti-erodibility of the different forests was studied in the region. The results showed: compared with bared land, soil anti-erodibility of each ecological non-commercial forest were better,the Cyclobalanopsis glauca had best performance on each soil anti-erodibility index; soil water-stable index and organic matter content decreased when soil tickness increased; the change process of static water disintegration rate(S) by time (t) showed function relationship of cubic polynomial S=at+bt~2+ct~3+d; slected soil water-stable index, agglomerating degree,dispersion rate,>0.25 mm water stable aggregate content, organic matter content as evalution index, base on grey correlation analysis,constructed the evlalution system of soil erodibility grade,maked qualitative evalution on soil anti-erodibility of each sample plots, results showed soil anti-erodibility grade of Cyclobalanopsis glauca was relatively strong, soil anti-erodibility grade of Cinnamomum camphora, Chinese fir plantation, masson pine forest, bamboo plantation, Chinese chestnut forest were moderate, soil anti-erodibility grade of bare land was relatively poor.

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作者:

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黄进[1] 杨会[2] 张金池[1]

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HUANG Jin[1] YANG Hui[2] ZHANG Jin-chi[1]水利论文YB,h2|^.L p{

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南京林业大学,江苏南京,210037广州番禺职业技术学院,广东广州,511400

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M&Qt"^3Ev0桐庐 生态公益林 林分类型 土壤抗蚀性 Main organic matter 有机质含量 土壤水稳性 index grey correlation analysis Cinnamomum camphora aggregate content 水稳性团聚体含量 soil erodibility results Chinese change process 指数 指标 青冈林水利论文\*Ko:U4dF!|

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3?GZ6uPa6~0以浙江省桐庐县生态公益林定位监测站为依托,以土壤水稳性指数、团聚体特征、有机质含量为指标,研究了该区域不同林分类型土壤层的抗蚀性.结果表明:对比无林地,各生态公益林土壤均有较好的抗蚀性能,其中青冈林在表征抗蚀性...

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