Abstract:

In order to research the amount of CO2 produced by soil respiration, At the campus and 是outhern campus in wild soybean, Wafangdian man-made wetland, all collected 9 different used patterns of soil. Then content in soil organic carbon was sured. The results showed the content in average organic matter at campus was the highest in three kinds of soil, it reached 11.34g/kg; the content in average organic matter at Southern campus of wild soybean was 8.97g/kg, the lowest content of average organic matter at Wafangdian man-made wetland was 8.33g/kg. Through analysis of variance, the content in average organic matter at the campus was great significantly higher than that in average organic matter at southern campus of wild soybean and Wafangdian man-made wetland; the content in average organic matter at the southern campus was great significantly higher than that in average organic matter at Wafangdian man-made wetland. The content in average organic matter at between No.1and No.2 sowing wheat soil was not significantly different. The content in average organic matter at no used saline-alkali soil at southern campus was great significantly higher than that in average organic matter at used saline-alkali soil at southern campus.