排序方式: 共有65条查询结果,搜索用时 15 毫秒
1.
2.
3.
Pipko I. I. Pugach S. P. Moiseeva Yu. A. Dudarev O. V. Repina I. A. Sergienko V. I. Semiletov I. P. 《Doklady Earth Sciences》2021,500(2):882-889
Doklady Earth Sciences - The dynamics of dissolved carbon forms in the waters of the mainstem of the Lena River from the middle reaches (the city of Yakutsk) to the nearshore zone of the Laptev Sea... 相似文献
4.
S. A. Zimov S. P. Davidov Y. V. Voropaev S. F. Prosiannikov I. P. Semiletov M. C. Chapin F. S. Chapin 《Climatic change》1996,33(1):111-120
Over three years, we found a consistent CO2 efflux from forest tundra of the Russian North throughout the year, including a large (89 g C m–2 yr–1) efflux during winter. Our results provide one explanation for the observations that the highest atmospheric CO2 concentration and greatest seasonal amplitude occur at high latitudes rather than over the mid-latitudes, where fossil fuel sources are large, and where high summer productivity offset by winter respiration should give large seasonal oscillations in atmospheric CO2. Winter respiration probably contributed substantially to the boreal winter CO2 efflux. Respiration is an exothermic process that produces enough heat to warm soils and promote further decomposition. We suggest that, as a result of this positive feedback, small changes in surface heat flux, associated with human activities in the North or with regional or global warming, could release large quantities of organic carbon that are presently stored in permafrost. 相似文献
5.
6.
7.
8.
Ananiev R. A. Dmitrevsky N. N. Roslyakov A. G. Chernykh D. V. Moroz E. A. Zarayskaya Y. A. Semiletov I. P. 《Oceanology》2022,62(1):127-132
Oceanology - The emission of natural gas from the seafloor to the surface in shelf areas of the Arctic seas is of increasing interest among researchers. Recently, various types of acoustic... 相似文献
9.
Oceanology - A comparative analysis of the content and composition of organic matter (OM) in samples of bottom sediments and subaqueous permafrost rocks by the concentration of organic carbon (OC),... 相似文献
10.
Doklady Earth Sciences - The field data characterizing the dynamics of the carbonate system, the level of surface water corrosivity with respect to aragonite, and CO2 fluxes in the... 相似文献