干旱区流动沙地建植梭梭（Haloxylon ammodendron）林后细粒物质输入对土壤碳氮积累的影响

安芳娇, 苏永中, 牛子儒, 刘婷娜

Effects of fine particulate matter input on soil carbon and nitrogen accumulation after establishment of Haloxylon ammodendron plantations on shifting sand dunes in arid area

Fangjiao An, Yongzhong Su, Ziru Niu, Tingna Liu

图3 土壤黏粉粒和碳酸钙与结皮厚度、EF和St的关系 图A、C、E、G、I和K表示冠层下的相应关系，图B、D、F、H、J和L表示冠层外的相应关系

Fig.3 Relationship between soil silt+clay， CaCO3 and crust thickness， erodible fraction and physical stability index