欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
通过对长江口水下沉积物。水界面可溶态无机氮（DIN=NO3^-＋N02^-＋NH4^＋）的交换行为研究发现，低潮时近口点（A）沉积物是水体DIN的汇（-2006．99μmol／（m^2·h）），而靠近口外点（B）沉积物是水体DIN的源（1848．27μmol／（m^2·h））。但高潮时，A点沉积物转变为水体DIN的源（1880．97μmol／（m^2·h）），而B点的沉积物转变成为DIN的汇（-956.64μmol／（m^2·h））。在距河口较远高低潮盐度变化微弱的地点（P），沉积物始终是水体DIN的源（1872.41μmol／（m^2·h））。高低潮海水盐度的变化对沉积物中微生物活动的影响是导致这一变化的主要原因。
英文摘要：
By studying on the exchange behavior of the dissolved inorganic nitrogen （DIN= NO3^-＋ NO2^-＋ NH4^＋） through the sediment-water interface in the Yangtze Estuary, we find that the sediments, which near the mouth （A）, are the sink of the DIN during the low tide, interface flux is -2 006.99μmol/（m^2·h）. And in the further location （B）, the sediment is the source of the DIN, interface flux is 1 948.27μmol/（m^2·h）. While during the high tide, the sediment in the A becomes into the source of the DIN （1 880.97μmol/（m^2·h））, and in the B, it changes into the sink （-956.64μmol/（m^2·h）. In the furthest site （P）, where the salinity varies little between the low tide and high tide, the sediment is the source of the DIN all the time, interface flux is 1 872.41 μmol/（m^2·h）. Variety of the seawater salinity affects the activity of the sediment microbe, and this is the main cause of this transformation.
同期刊论文项目
同项目期刊论文
Summer-time Denitrification and Nitrous Oxide exchange in the intertidal zone of the Yangtze Estuary
Evaluation of Dissolved Inorganic Nitrogen Eliminating Capability of the Sediment in the Tidal Wetla
Monitoring urban expansion and land use/land cover changes of Shanghai metropolitan area during tran
Waterlogging risk assessment based on land use/cover change: a case study in Pudong New Area, Shangh
Initialization strategies to enhancing the performance of genetic algorithms for the p-median proble
A spatial approach to select pilot counties for programs to correct the biased sex ratio at birth in
Cross-shore suspended sediment flux in the salt marsh pioneer zone of Chongming eastern beach in the
期刊信息
位置：