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- W2361775892 abstract "A field experiment was conducted to measure emission amount of CO2 and CH4 from maize and soybean- black soil systems in North- east China. The research results showed that emission amounts of CO2 were 5 258.1～ 6 025.3kg· hm- 2 from maize- black soil system, 6 513.1～ 7 484.7 kg· hm- 2 from soybean- black soil system, respectively. A significant difference of emission appeared between maize and soybean systems (P0.05), and soil was one of main CO2 source. CO2 flux had a significant correlation with atmospheric temperature (P0.05), but did not correlate with soil water content. The greater CO2 flux period appeared in June ～ August, and temperature was a main limited factor to influence CO2 emission in black soil region in North- east China. We also discovered that CH4 production from dryland soil- crop systems. The CH4 emission amounts were 1.13～ 2.14 kg· hm- 2 and 0.62～ 0.71kg· hm- 2 from maize- soil system and soybean- soil system, respectively, and the amounts were lower, but their differences were significant (P0.05). It may be suggested that dryland- crop system not be a main source of CH4 production. CH4 flux correlated with neither atmospheric temperature nor soil water content in the field experiment." @default.
- W2361775892 created "2016-06-24" @default.
- W2361775892 creator A5029126857 @default.
- W2361775892 date "2003-01-01" @default.
- W2361775892 modified "2023-09-23" @default.
- W2361775892 title "Emission of CO_2 and CH_4 from Black Soil in North-East China" @default.
- W2361775892 hasPublicationYear "2003" @default.
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