Soil bacterial functional diversity as influenced by cadmium,phenanthrene and degrade bacteria application   总被引：1，自引：0，他引：1  

Wei Jiang  Jijun Wang  Jianshe Tang  Feng Hou  Yitong Lu 《Environmental Earth Sciences》2010,59(8):1717-1722

There are increasing concerns over compound pollution in northeast of China and its bioremediation. Cd, Phe, degradation bacteria W.J and their combination on soil microbial community function were assessed with the BIOLOG method. The microbial community was extracted from the soil with different treatments. Average color development, richness, Shannon–Weaver index, and principal component analysis on OD standardized data were performed. The results showed that soil microbial metabolic diversity in CK was significantly higher than that in the soils in which Cd, Phe, W.J or their combination was added. It indicated that Cd, Phe has significantly negative effect on the sole-carbon-source metabolic ability of soil microbial communities, particularly when both of them were present. Application of degradation bacteria incubation makes soil microbial communities same as control except for the significant decrease in 4-hydroxy benzoic acid, l-serine, glucose-1-phosphate metabolism. It shows that the incubate application has a considerably effect in soil communities reversion.  相似文献   

Tectonic Characteristics and Evolution of the Qiangtang Basin in Nothern Tibet Plateau     

Huang Jijun  et al 《地学前缘》2000,(Z1)

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Red Clay Sediment in the Central Chinese Loess Plateau and Its Implication for the Uplift of the Tibetan Plateau     

Yougui Song  Jijun Li  Xiaomin Fang  Fei Xia  Hongmei Dong 《山地科学学报》2005,2(2):137-145

Introduction A set of reddish clay-silt-sized sediments named red clay underlying the Quaternary loess-paleosol sequence widely distribute in the Chinese Loess Plateau. The thickness of the red clay sediments ranges from decades of meters to over 100 m (Evan et al.1991,Mo and Derbyshire 1991, SUN et al. 1997&1998, DING et al. 1999, GUO et al. 2001, QIANG et al. 2001). Previous studies show that not only loess-paleosol (e.g.LIU et al.1985,AN et al.1990,DING et al.1992),but also red …  相似文献   

新疆煤炭资源赋存规律与资源潜力预测   总被引：2，自引：0，他引：2  

何深伟  李赛歌  王俊民  阿布里提甫·肉孜  田继军 《中国煤炭地质》2011,(8):82-84,89

新疆预测煤炭资源量虽居全国首位,但探明程度很低,仅为12%,煤炭资源分布极不均衡。依据构造控制、成煤时代及聚煤规律等因素,将新疆含煤地层划分为三大含煤地层区,即：准噶尔含煤地层、塔里木含煤地层及昆仑山―喀喇昆仑山含煤地层区。依据早―中侏罗世的聚煤作用与古地理环境、古构造的关系,可将三大含煤地层区再划分为13个赋煤带,进而细分出60个煤田（煤产地、煤矿点）。通过对13个赋煤带含煤地层与构造的研究,对新疆煤炭资源勘查开发潜力作出评价,认为新疆煤炭资源量潜力巨大,有很好的勘查开发利用前景。  相似文献   

Electrical Structure of the Crust Beneath the Ordos Block     

Zhao Guoze  Zhan Yan  Wang Lifeng  Wang Jijun  Tang Ji  Chen Xiaobin  Xiao Qibin 《中国地震研究》2011,25(2):120-134

The Ordos block is a stable tectonic unit since the Cenozoic. Whether low-resistivity layers exist in the middle and lower crust of this kind block is an open question. This work attempts to reveal the entire crustal structure of the block based on interpretation of magnetotelluric data collected along the profile across this region. The result shows that a layered structure characterizes the crust of the Ordos block, with a low-resistivity layer at depth of about 20km, presumably associated with fluids there. In contrast, in the areas of active tectonics on the east and west of the block, there are no such layered electric structures in the crust, and the low-resistivity zones may be related to the decollement zones (or ductile shear zones) in the crust. The difference in electric structure of crust between the Ordos Block and neighboring areas is of significance to analyze the movement and deformation of varied blocks in the continent.  相似文献   

豫西铁炉坪银铅矿床矿脉构造解析及近矿蚀变岩绢云母40Ar-39Ar年龄测定     

高建京  毛景文  陈懋弘  叶会寿  张继军  李永峰 《地质学报》2011,85(7):1172-1187

河南省洛宁县铁炉坪大型脉状银铅矿床地处华北陆块南缘熊耳山中生代变质核杂岩构造西部,由一组主要的NNE走向陡倾斜矿脉和一组次要的NW走向陡倾斜矿脉有规律地组成.矿脉以条带状、角砾状和晶洞-晶簇-梳状三种主要形式多阶段充填而成,按照主要矿脉的矿物共生序列可以分为四个阶段:铁镁碳酸盐阶段(I)、烟灰色石英-贱金属硫化物-银矿...  相似文献   

Deep Electric Structure Beneath the Intersection area of Western Qingling Orogenic zone with North-South Seismic Tectonic Zone in China     

ZHAN Yan  ZHAO Guoze  WANG Lifeng  WANG Jijun  CHEN Xiaobin  ZHAO Lingqiang 《《地质学报》英文版》2013,87(Z1):425-426

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河南省月和年降水量正态性分析   总被引：3，自引：0，他引：3  

王纪军  任国玉  匡晓燕  汪方 《气候与环境研究》2010,15(4):522-528

利用1957～2008年(共52年)河南省48个气象站月、年降水量资料,利用标准偏态系数和峰度系数检验方法,对降水量的正态性进行了分析。结果表明,河南省大多数气象站的月和年降水量不服从正态分布,但对降水量序列进行开平方或开立方处理后,降水量序列的正态性得到明显的改善。半数台站的年降水量原始序列服从正态分布。对各站偏态系数进行平均,可以发现,所有站月序列的偏态系数均为原序列的最大,立方根序列的偏态系数最小。原序列均为正偏,平方根序列以正偏为主,立方根序列则以负偏为主。所有站月原序列的峰度系数均为正数,平方根或立方根的峰度系数则正负相间。  相似文献   

1957-2005年河南省降水和温度极端事件变化   总被引：10，自引：0，他引：10  

余卫东  柳俊高  常军  王纪军 《气候变化研究进展》2008,4(2):78-083

 利用河南省1957-2005年逐日降水,最高、最低和日平均气温资料,分析了近50 a河南省极端天气事件的变化趋势。结果表明：1957-2005年河南省暴雨日数、极端降水事件和严重干燥事件发生频率都在增加,但其线性趋势并不显著;暴雨和极端降水的变化趋势呈明显的南北差异;异常高温事件增加而异常低温事件减少,暖冬的趋势比较显著;高温日数和低温日数都显著减少,其变化趋势的空间分布具有很好的一致性。  相似文献   

东营凹陷沙四上亚段层序地层特征与沉积体系演化   总被引：7，自引：0，他引：7  

田继军  姜在兴 《地质学报》2009,83(6):836-846

本文应用层序地层学方法,通过钻井、测井、地震反射等标志, 将东营凹陷沙四上亚段划分为一个三级层序,并以地层叠置样式、岩性、岩相的变化细分出低位、湖侵和高位体系域,在连井剖面层序对比的基础上建立了研究区沙四上层序地层格架。通过岩心、钻井、测井、古生物等资料的分析识别出沙四上亚段主要发育扇三角洲、近岸水下扇、三角洲、滩坝等主要相类型。本文首次系统分析了东营凹陷沙四上亚段沉积相的构成、演化与分布规律,明确了各种不同沉积砂体的相互联系以及共生规律,建立了沙四上亚段沉积模式,这对于指导研究区隐蔽油气藏的勘探具有重要意义。  相似文献