维普中文期刊产品整合服务

CHEMICAL WEATHERING PROCESSES AND ATMOSPHERIC CO_2 CONSUMPTION OF HUANGHE RIVER AND CHANGJIANG RIVER BASINS

查看全文 作　　者：LIJing-[1]ying;[2]ZHANGJing 高影响力作者 机构地区：[1]SchoolofMaterialsandEnvironmentalSciences,QingdaoUniversityofScience&Technology,Qingdao266042,P.R.China;[2]ChemistryandChemicalEngineeringCollege,OceanUniversityofChina,Qingdao266003,P.R.China//StateKeyLaboratoryofEstuarineandCoastalResearch,EastChinaNormalUniversity,Shanghai200062,P.R.China高影响力机构 出　　处：《Chinese Geographical Science》索引2005年第15卷第1期,共6页高影响力期刊 基　　金：Undertheauspicesof Ministry of Science and Technology Project of China (No. G1999043075) 摘　　要：Rock weathering plays an important role in studying the long-term carbon cycles and global climatic change. According to the statistics analysis, the Huanghe (Yellow) River water chemistry was mainly controlled by evaporite and carbonate weathering, which were responsible for over 90% of total dissolved ions. As compared with the Huanghe River basin, dissolved load of the Changjiang (Yangtze) River was mainly originated from the carbonate dissolution. The chemical weathering rates were estimated to be 39.29t/(km2·a) and 61.58t/(km2·a) by deducting the HCO3- derived from atmosphere in the Huanghe River and Changjiang River watersheds, respectively. The CO2 consumption rates by rock weathering were calculated to be 120.84×103mol/km2 and 452.46×103mol/km2 annually in the two basins, respectively. The total CO2 consumption of the two basins amounted to 918.51×109mol/a, accounting for 3.83% of the world gross. In contrast to other world watersheds, the stronger evaporite reaction and infirm silicate weathering can explain such feature that CO2 consumption rates were lower than a global average, suggesting that the sequential weathering may be go on in the two Chinese drainage basins. 关 键 词：黄河盆地 长江盆地 二氧化碳消耗量 化学风化率
相关文献

参考文献(19)

引证文献(16)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费