Sample records for 热水 (hot water)
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44

甘肃省黑河流域土地沙漠化的水文学指征初探 Hydrological indicators of land desertification in the Heihe River catchment, Gansu Province

Ji ShanZhong;Wang Tao;Luo Fang(齐善忠)

黑河流域土地沙漠化及水资源合理利用一直是该流域研究的焦点问题。文章首先从土地沙漠化分布范围、种类、面积、沙漠化程度等方面,分析了黑河流域土地沙漠化的现状:土地沙漠化主要发生在流域的中下游地区,尤以额济纳绿洲沙漠化形势严峻;其次,从地表水、地下水之水质、水量方面分析了黑河流域水环境变化的状况:人类不合理的经济活动,导致黑河流域水资源环境恶化,具体表现在地下水、地表水水位下降、水质恶化。在此基础上,从黑河流域地表水及地下水着手,初步提出了黑河流域土地沙漠化的水文学指征体系:其中,地表水主要包括蒸发与蒸腾的消耗、径流和渗漏3个部分;径流部分又分为地表水流经区域及水量变化、干流水量的系列变化以及泥沙沉...

DRIVER (Chinese)

112

Characterization and quantification of ammonia-oxidizing archaea (AOA) and bacteria (AOB) in a nitrogen-removing reactor using T-RFLP and qPCR

Jin, Tao; Zhang, Tong; Yan, Qingmei

Using ammonia monooxygenase α-subunit (amoA) gene and 16S rRNA gene, the community structure and abundance of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in a nitrogen-removing reactor, which was operated for five phases, were characterized and quantified by cloning, termina...

DRIVER (Chinese)