重庆四面山几种人工林地土壤抗蚀性分析  

Analysis of Soil Anti-erodibility of Different Plantation Lands in Simian Mountain,Chongqing

作　　者：任改[1] 张洪江[1] 程金花[1] 杜士才 李根平 古德洪 

机构地区：[1]北京林业大学,北京100083 [2]重庆市林业局,重庆401147

出　　处：《水土保持学报》2009年第3期20-24,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(40771042);国家“十一五”科技支撑计划(2006BAD03A1304);国家林业局“948”项目(2006-4-26);国家林业局林业推广项目(2007-100)

摘　　要：选择重庆四面山张家山林场5种人工林为研究对象,通过浸水实验,对林地表层土壤的抗蚀性能及其与土壤理化性质关系进行了研究,结果表明：（1）不同人工林地土壤抗蚀性能差异显著,土壤抗蚀指数表现为木荷石栎混交林地最大（87.2%）,其后依次为枫香木荷石栎香樟混交林地（83.5%）、杉木纯林地（73.3%）、杉木马尾松混交林地（69.0%）,杉木马尾松木荷混交林地最小（52.5%）。（2）林地土壤抗蚀性能随土壤深度和浸水时间的增加而降低,表现为土壤抗蚀指数0-10 cm土层为10-20 cm土层的1.1～1.6倍,土壤抗蚀指数与土粒浸水时间成二次多项式函数关系。林地土壤抗蚀指数与其理化性质存在显著的线性关系。Based on the experiments of dispersion of soil particals in water, soil anti-erodibility was studied in Zhangjiashan of Simian Mountain in Chongqing,and also the relationship between soil anti-erodibility and soil physical and chemical characteristics were discussed. Results indicate that： （1）There is obviously difference in anti-erodibility of plantation lands： soil anti-erosion indices are lined as follows： Schima superba × Lithocarpus glabra （87.2%） ,Liquidambar f orrnsana × Schima superba × Lithocarpus glabra ）〈 Cinnamomum camphorap（83. 5%）, Cunninghamia lanceolaa （Lamb.） （73. 3%）, Cunninghamia lanceolaa （Lamb.） × Pinus massonvana Lamb （69.0 %）, Cunninghamia lanceolaa （Lamb.） × P inus massonvana Lamb × Schima su perba （52.5%）. （2）Anti-erodibility of plantation lands decreases with the increase of soil depth and the time of rainfall. Soil anti-erosion indices in upper ten centimeters are 1.1- 1.6 times as these in uder ten centimeters, the relation between soil anti-erosion indices and times are： S = at^2 ＋ bt＋ c. （3） Soil anti-erodibility has a closest liner relation with the soil physical and chemical characteristic.

关 键 词：四面山 人工林地 土壤抗蚀性 

分 类 号：S714.7[农业科学—林学]