求助如下几篇英文文献，谢谢！@
1、Hall, S. J., Huber, D., Grimm, N. B., Soil N2O and NO emissions from an arid, urban ecosystem. Journal of Geophysical Research-Biogeosciences 2008, 113－
2、Werner, C., Kiese, R., Butterbach-Bahl, K., Soil-atmosphere exchange of N2O, CH4, and CO2 and controlling environmental factors for tropical rain forest sites in western Kenya. Journal of Geophysical Research-Atmospheres 2007, 112－
3、Toma, Y., Hatano, R., Effect of crop residue C : N ratio on N2O emissions from Gray Lowland soil in Mikasa, Hokkaido, Japan. Soil Science and Plant Nutrition 2007, 53, 198-205.
4、Verchot, L. V., Hutabarat, L., Hairiah, K., van Noordwijk, M., Nitrogen availability and soil N2O emissions following conversion of forests to coffee in southern Sumatra. Global Biogeochemical Cycles 2006, 20, -
5、Rosenkranz, P., Bruggemann, N., Papen, H., Xu, Z., et al., N2O, NO and CH4 exchange, and microbial N turnover over a Mediterranean pine forest soil. Biogeosciences 2006, 3, 121-133.
6、Pilegaard, K., Skiba, U., Ambus, P., Beier, C., et al., Factors controlling regional differences in forest soil emission of nitrogen oxides (NO and N2O). Biogeosciences 2006, 3, 651-661.
7、Kitzler, B., Zechmeister-Boltenstern, S., Holtermann, C., Skiba, U., Butterbach-Bah, K., Controls over N2O, NOx and CO2 fluxes in a calcareous mountain forest soil. Biogeosciences 2006, 3, 383-395.
Mori, A., Hojito, M., Kondo, H., Matsunami, H., Scholefield, D., Effects of plant species on CH4 and N2O fluxes from a volcanic grassland soil in Nasu, Japan. Soil Science and Plant Nutrition 2005, 51, 19-27.
8、Varella, R. F., Bustamante, M. M. C., Pinto, A. S., Kisselle, K. W., et al., Soil fluxes of CO2, CO, NO, And N2O from an old pasture and from native Savanna in Brazil. Ecological Applications 2004, 14, S221-S231.
9、Schindlbacher, A., Zechmeister-Boltenstern, S., Butterbach-Bahl, K., Effects of soil moisture and temperature on NO, NO2, and N2O emissions from European forest soils. Journal of Geophysical Research-Atmospheres 2004, 109, -.
10、Pei, Z. Y., Ouyang, H., Zhou, C. P., Xu, X. L., N2O exchange within a soil and atmosphere profile in alpine grasslands on the Qinghai-Xizang Plateau. Acta Botanica Sinica 2004, 46, 20-28.
11、Jungkunst, H. F., Fiedler, S., Stahr, K., N2O emissions of a mature Norway spruce (Picea abies) stand in the Black Forest (southwest Germany) as differentiated by the soil pattern. Journal of Geophysical Research-Atmospheres 2004, 109, -.
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