不同丹参种植区土壤水稳性团粒分形维数与基本特性的关系  

Relationship between Fractal Dimension of Soil Water Stable Aggregates and Fundamental Characteristics in Different Growing Regions of Salvia miltiorrhiza

作　　者：何彪[1] 严铸云[1] 沈昱翔[1] 黄文丽[1] 郭晓恒[2] 

机构地区：[1]成都中医药大学中药材标准化教育部重点实验室,四川成都611137 [2]成都大学,四川成都610106

出　　处：《安徽农业科学》2012年第10期5901-5905,共5页Journal of Anhui Agricultural Sciences

基　　金：国家十一五科技支撑计划项目(2006BAI09B03-4);国家自然科学基金(81173493);四川省中药管理局项目(2010-06)

摘　　要：[目的]研究土壤水稳性团粒分形维数及其与团粒基本特征之间的关系,为防止土壤退化、减少土壤侵蚀提供理论指导。[方法]利用分形理论对山东、河南和四川等丹参主要种植区根际、根间和空白土壤水稳性团粒的分形特征进行分析。[结果]河南栾川土壤根际、根间土壤水稳性团粒分形维数最小,四川集凤空白土壤水稳性团粒分形维数最小,河南栾川次之;根际土壤水稳性团粒的分形维数为2.569 0～2.937 7,根际土壤分形维数与<0.25 mm粒级团粒含量呈0.01水平显著正相关;根间土壤团粒的分形维数为2.694 0～2.942 8,根间土土壤团粒分形维数与1.00～0.50、<0.25 mm粒级团粒含量呈0.01水平显著相关;空白土壤团粒的分形维数为2.709 6～2.965 1,空白土壤分形维数与<0.25 mm粒级团粒含量呈0.01水平显著正相关。[结论]土壤水稳性团粒分形维数与粒径>0.25 mm土壤水稳性团粒总量、稳定性系数呈负相关。[Objective] The fractal dimension of soil water stable aggregates and their relationship with the fundamental characteristics of aggregates were studied to provide theoretical guidance for preventing the soil degeneration and reducing soil erosion.[Method]Based on the fractal theory,the fractal features of soil water stable aggregates of Salvia miltiorrhiza＇s growing rhizosphere soil,inter-roots soil and blank soil in Shandong,Henan and Sichuan were analyzed.[Result] Results showed that the fractal dimension of water stable aggregates of rhizosphere soil and inter-roots soil in Luanchuan of Henan was the smallest,while the fractal dimension of water stable aggregates of blank soil in Jifeng,Sichuan was the smallest,followed by Luanchuan of Henan.The fractal dimension of rhizosphere soil ranged from 2.569 0 to 2.937 7,and it was significantly positive correlated to the total amount aggregates of 0.25 mm.The fractal dimension of inter-roots soil ranged from 2.694 0 to 2.942 8,and the correlation between the total quantity of aggregates of 1.00-0.50 mm,0.25 mm was significant at the level of 0.01.The fractal dimension of soil water-stable aggregate of blank soil ranged from 2.709 6 to 2.965 1,and it was significantly positive correlated to the total amount aggregates of 0.25 mm.[Conclusion] There was remarkable negative correlation between the fractal dimension of soil water stable aggregates and the total amount of water stable aggregates of ﹥0.25 mm and aggregate stability index.

关 键 词：丹参 土壤团粒 水稳性团粒 分形维数 

分 类 号：S567.53[农业科学—中草药栽培] S152.75[农业科学—作物学]