集约化生产对农田土壤碳氮含量及δ<sup>13</sup>C和δ<sup>15</sup>N同位素丰度的影响

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Effects of intensive agricultural production on farmland soil carbon and nitrogen contents and their δ13〖KG-*8〗C and δ15〖KG-*8〗N
isotope abundances.

Chinese Journal of Applied Ecology . 2012, (03): 751 -757 .