古尔班通古特沙漠一年生植物的氮吸收策略

侯宝林, 庄伟伟

Nitrogen uptake strategy of annual plants in Gurbantünggüt Desert

HOU Bao-Lin, ZHUANG Wei-Wei

表1 古尔班通古特沙漠样地不同月份各土壤深度土壤样品组成成分分析(平均值±标准差)

Table 1 Composition analysis of soil samples at various soil depths in different months of Gurbantünggüt Desert (mean ± SD)

土壤组成成分含量 Soil composition content 六月 June 七月 July 土壤深度 Soil depth (cm) 土壤深度 Soil depth (cm) 0-5 5-15 0-5 5-15 土壤有机碳 Soil organic C (%) 2.20 ± 0.26 1.40 ± 0.10 2.37 ± 0.31 1.63 ± 0.21 总氮 Total N (%) 0.159 ± 0.008 0.086 ± 0.011 0.188 ± 0.030 0.091 ± 0.007 NH4+-N (μg·g-1) 12.563 ± 0.897 10.150 ± 1.697 13.800 ± 1.456 9.783 ± 1.262 NO3--N (μg·g-1) 22.357 ± 3.446 18.587 ± 1.216 23.597 ± 3.118 17.407 ± 2.298 有机氮 Organic N (μg·g-1) 12.747 ± 2.034 11.217 ± 1.216 12.717 ± 1.975 11.210 ± 1.800