为探究带状格局植被对土壤理化性质的影响及在空间上的差异，选取我国黄土高原柠条和山杏两种典型的带状植物篱为研究对象，并对其0～60 cm 土层理化性质空间特征进行对比分析，结果表明，（1）柠条植物篱系统内各部位土壤容重、最大持水量、非毛管孔隙度、总孔隙度差异显著（P ＜0．05）；山杏植物篱系统与梯田土壤毛管孔隙度和非毛管孔隙度差异显著（P ＜0．05）；各部位间土壤水分物理性质因植物篱类型不同而分异明显。（2）两种带状植物篱系统土壤小团聚体（粒径0．25～2．00 mm）和微团聚体（粒径＜0．25 mm）各部位分异显著（P ＜0．05），植物篱对粒径＜2．00 mm 的水稳性团聚体空间分异产生明显影响。（3）两种带状植物篱土壤砂粒（粒径0．05～2 mm）、粉粒（粒径0．002～0．05 mm）、粘粒（粒径＜0．002 mm）含量差异均不显著（P ＞0．05），但植物篱能改变砂粒、粉粒、粘粒的相对组成。（4）柠条植物篱系统内各部位土壤有机质表现为带内（3．57％、Ⅱ级）＞带后（3．09％、Ⅱ级）＞带间（2．72％、Ⅲ级）＞带前（2．64％、Ⅲ级），且各部位间分异明显；山杏植物篱系统土壤有机质表现为带间（1．47％、Ⅳ级）＞带内（1．41％、Ⅳ级），分异不明显；不同植物篱类型间有机质分异不同。（5）植物篱土壤砂粒和水稳性小团聚体与有机质均呈极显著正相关关系（P ＜0．01）；粉粒和粘粒与有机质均呈显著负相关关系（P ＜0．05）；土壤容重、水稳性大团聚体、微团聚体均与土壤有机质无明显相关关系。%In order to explore the effects of banded vegetation on soil properties and their spatial differentiation, an analysis was carried out on the Loess Plateau of the 0-60 cm soil layers of typical banded hedgerows made up of Caragana korshinskii and Armeniaca sibirica .The results showed that:(1)There were significant spa-tial differences in soil moisture physical properties within the hedgerow systems and these also varied across the different types of hedgerow.Soil bulk density,maximum water holding capacity,non-capillary porosity and to-tal porosity varied significantly under the C.korshinskii hedgerow system (P <0.05),and soil capillary porosi-ty and non-capillary porosity varied significantly under the A.sibirica system (P <0.05).(2)Under the two types of hedgerows,there were significant differences in the contents of water-stable micro-aggregates (<0.25mm)and small aggregates (0.25 -2 mm)(P <0.05).The spatial differentiation of water-stable aggregates with particle sizes less than 2 mm was obviously affected by the hedgerows.(3 )There were no significant differences in the contents of soil sand (0.05-2 mm),silt (0.002-0.05 mm)and clay (<0.002 mm)under the two hedgerow systems,although hedgerows can change the relative composition of these three compo-nents.(4)There were differences in the content of soil organic matter under the two hedgerow systems.The content of soil organic matter was distributed as follows:for the C.korshinskii system,inner-band (3.57%, grade Ⅱ)>behind band (3.09%,grade Ⅱ)>inter-band (2.72%,grade Ⅲ)>in front of band (2.64%,gradeⅢ);for the A.sibirica system,inter-band (1.47%,grade Ⅳ)>inner-band (1.41%,grade Ⅳ).(5)Soil sand and water-stable small aggregates showed a significant positive correlation with soil organic matter (P <0.01). Silt and clay showed a significant negative correlation with soil organic matter (P <0.05).There were no sig-nificant correlations between soil organic matter and either soil bulk density,water-stable macro-aggregates or micro-aggregates.
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