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中文摘要：
用偏光显微镜和Sisc Ias V8．0软件对关中东部典型农耕地和花椒园土壤的微形态进行观察和分析，结果表明：耕地和花椒园土壤有相同的剖面构型Ap1-Ap2-BC；粗颗粒矿物组合均以石英和长石占优势；与耕地相比，花椒园土壤的有机质含量增多，粗颗粒趋于变小变圆的程度降低，C／F（10μm）值较大；残积黏土和无定形铁含量增加，孔隙所占比例增加。这说明短时间内退耕还林对土壤剖面的构造和矿物组合影响不明显，但是对土壤微形态有显著影响；花椒园土壤更有利于旱塬地区土壤的吸水和保水，使其有机质含量增加。
英文摘要：
With the aid of polarizing microscope and Sisc Ias V8.0 software, micromorphological features of the soils from typical farmland and a Chinese prickly ash plantation in the East Guanzhong region were observed and analyzed. Results show that the two sampling sites had the same soil profile structure, Ap1-Ap2-BC, and their fractions of coarse granule minerals were dominated with quartz and feldspar. In comparison with the former, the latter was higher in content of organic matter, C/F（10μm）ratio, content of residual clay and amorphous iron, but lower in the trend of coarse particles becoming round and small, which indicates that the effect of ＂grain for green＂ is not significant on soil profile structure or mineral composition, but great on soil micromorphology. The soil in the Chinese prickly ash forest plantation is more capable of absorbing and reserve moisture, and tends to have higher organic matter.
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