土壤2017，Vol.49Issue(2)：371-378,8.DOI:10.13758/j.cnki.tr.2017.02.024
青海湖流域土壤大孔隙特征与理化性质的相关性研究
Correlations Between Soil Physical-chemical Proprieties and Soil Macropore Characteristics in Qinghai Lake Basin
摘要
Abstract
Soil macropores are preferential pathways for water, air and chemical substances movement in soils. Undisturbed soil columns under different vegetation types were sampled in Shaliu River Basin of the Qinghai Lake and scanned with X-ray computed tomography. And 3D soil macropore networks were visualized and macropore quantity, macroporosity and equivalent diameter were interpreted with Fiji software through reconstruction. Then the correlations between soil physical-chemical properties and macropore characteristics were studied. The results indicated that soil macropores were mainly distributed in the 0–100 mm layer of soil, soil phosphorus was significantly correlated with number and mean equivalent diameter of macropores, soil nitrogen and organic matter were significantly correlated with mean equivalent diameter of macropores, soil bulk density was significantly correlated with macroporosity and mean equivalent diameter of macropores, and soil particles of 0.002–0.02 mm was correlated highly with soil macropore characteristics.关键词
CT扫描/大孔隙/理化性质/相关性Key words
CT/Macropores/Physical-chemical properties/Correlation分类
农业科技引用本文复制引用
李宗超,胡霞,刘勇,孙贞婷,吕艳丽..青海湖流域土壤大孔隙特征与理化性质的相关性研究[J].土壤,2017,49(2):371-378,8.基金项目
国家自然科学基金项目(41471018)和国家自然科学基金重点项目(41130640)资助. （41471018）
