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Responses of distribution pattern of desert riparian forests to hydrologic process in Ejina oasis

Science china Earth Sciences 2004年第z1期47卷 21-31页

作者： ZHAO Wenzhi, CHANG Xueli & HE ZhibinLinze Inland River Basin Comprehensive Research station, Cold and Arid Regions environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000,{2. Yantai Normal University, Yantai 2.4005,{2. Linze Inland River Basin Comprehensive Research station Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou China Yantai Normal University Yantai China

By using the theories and methods of landscape ecology and the technology of GIS and RS, a study has been carried out on the responses of distribution pattern of desert riparian forest to hydrologic process on the basis of the hydrologic data from 1990 to 2.00 and the TM image of 2.01 year. The results showed that: (1) there appears an even distribution pattern for the relative forest area in oasis, however, the degenerated forest diaplays an increasing tendency from west to east; (2. the desert riparian forest in Ejina is in completely degenerated process at the patch scale; (3) the number of patch is influenced not only by hydrologic process,but also by agricultural activity such as cultivation. The severe deterioration of the degraded vegetation in whole oasis initiates from lower reaches, and gradually impels to upstream; the fragmentation of landscape in the terminal site is more obvious, which is influenced by river shape and decreasing flux of water. It is found that the influence of surface hydrologic process to the ground hydrologic process of desert riparian forest in Ejina oasis is little for the recent ten years. The relative area of the degenerated forest increased with increasing ground water depth in the direction of parallel to river channel. On the contrary, in the direction perpendicular to river channel, there is a decreasing tendency for the average patch area of the forest and the degenerated forest with increasing ground water depth.

关键词： Ejina oasis, desert riparian forests, vegetation pattern, hydrologic process.

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玉环县五大河流环境质量现状及污染防治对策

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城市环境与城市生态 2002年第2期15卷 32-33页

作者：陈菊芬浙江省玉环县环境监测站浙江317600

简要介绍了玉环县五大河流环境质量现状 ,分析了造成五大河流受污染的原因 ,并从环保的角度提出了建设项目指导性意见。

关键词：玉环县五大河流环境质量现状防治对策污染防治

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Research on the multi-level intake water temperature effect of the Yalong River Jinping-I hydropower project

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Science china(Technological Sciences) 2011年第S1期54卷 125-132页

作者： WU ShiYong 1,CAO Wei 1,WANG HongMei 1,SUN ShuangKe 2.&CHEN QiuWen 3 1 Ertan Hydropower Development Company,Ltd.,Chengdu 610051,china 2.1} Institute of Water Resources and Hydropower Research,Beijing 100038,china 3 Research Center for Eco-environmental Sciences,Chinese Academy of Sciences,Beijing 100085,china Ertan Hydropower Development Company Ltd.

Based on the discussion of the multi-level intake application status of high dam reservoir,this paper takes the Jinping-I hydropower project reservoir in the Yalong River as an example,which is shaped by the highest 305 m high arch dam,and carries out the forecasting research on the reservoir temperature by numerical simulation and physical model *** paper studies the intake effect of withdrawing the surface warm water by the stoplog gates inlets and verifies the reliability of the mathematical model by comparative *** results show that for a high dam hydropower station,taking the appropriate multi-level intake measure can withdraw the surface warm water in the spawning season and provide a favorable environment for the fish *** technical ideas and implementation scheme are adopted in this *** can provide technical reference for the solutions of similar problems in the future and it also has important engineering significance on the research of water temperature in large deep reservoirs.

关键词： water temperature multi-level intake Jinping-I hydropower project

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Origin of summer monsoon rainfall identified by δ18O inprecipitation

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Science Bulletin 2005年第23期50卷 2761-2764页

作者： PANG Hongxi1, HE Yuanqing1, 2. ZHANG Zhonglin1, LU Aigang1, GU Juan1 & ZHAO Jingdong1 1. Key Laboratory of Cryosphere and Environment, Cold and Arid Re-gions environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, china 2. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, china Key Laboratory of Cryosphere and Environment Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

A negative correlation between δ 18O in mon-soon precipitation and f, the ratio of precipitable water in monsoon region to that in water source area, is hypothesized. Using the Rayleigh model, a new method for identifying ori-gin of summer monsoon rainfall is developed based on the hypothesis. In order to validate the method, the isotopic data at New Delhi, a typical station in the southwest monsoon region, and Hong Kong, a typical station in the southeast monsoon region, were collected and analyzed for case studies. The case studies indicate that the water source areas of the monsoon rainfall at the two stations identified by the method are accordant with the general atmosphere circulation pat-terns. The method developed in this paper is significantly important for tracing the origin of summer monsoon pre-cipitation.

关键词： monsoon stable isotopes origin of monsoon precipita-tion.

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异烟酸—吡唑啉酮光度法测定水中氰化物方法的探讨

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上海环境科学 2001年第11期20卷 554-555页

作者：陈蓉普陀区环境监测站上海200062

在用异烟酸—吡唑啉酮光度法测定水中氰化物时,用氢氧化钠代替N,N一二甲基甲酰胺作为溶剂,配制吡唑啉酮作试验,结果表明,改进法代替标准法是可行的,且改进后的显色剂较原显色剂稳定。

关键词：异烟酸-吡唑啉酮光度法氰化物氢氧化钠溶剂水质监测

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To take a clean technology as a strategy for pollution control in industry

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Journal of environmental Sciences 1993年第1期5卷 90-98页

作者： Shi QingNational environmental Protection Agency, Beijing 100035, chinaLiu XishuNational Natural Science Foundation of china, Beijing 100083, china National Env Protection Agency Beijing 100035 China China

A clean technology in thermal power station by adding of limestone into coal for getting the co-melted compounds was studied. Comparing with conventional technology, the quantity of ash discharged is decreased from 85% to 15%, the water consumption is 80% less than traditional method. The slag discharged could be used as raw materials for cement and bricks. In addition, the SO2.content is decreased as well.

关键词： thermal power station pollution control clean technology.

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Analyses of the long-term salinity variability in the Bohai Sea and the northern Huanghai (Yellow) Sea

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Acta Oceanologica Sinica 2009年第5期28卷 1-8页

作者： YU Huaming BAO Xianwen LU Cuilan CHEN Xu＇en KUANG Liang College of Physical and environmental Oceanography Ocean University of China Qingdao 266100 China Institute of Oceanography Centre for Marine and Climate Research University of Hamburg Hamburg 20146 Germany Ningbo Marine environmental monitoring Center {2. State Oceanic Administration Ningbo 315200 China Center for Maritime Systems Stevens Institute of Technology Hoboken NJ 07030 USA

Based on the comprehensive collection of the field observed salinity of the Bohai Sea （BHS） and the northern Huanghai Sea （NHS） from the 1950s to the present, the patterns of 10-years-averaged salinity at the different layers in the recent five decades （the 1950s, the 1960s, the 1970s, the 1980s and the 1990s） are obtained by the spatial-temporal interpolation technique with the scrupulous data quality control in this study. Then, by combining the spatial-temporal interpolation technique with successive correction method, the annual distributions of salinity both in the BHS and in the NHS are obtained as well. The data analyses indicate that the overall salinity in the BHS and the NHS increases from the 1960s till the present, with the increase of annual mean salinity of 0.04 psu from the 1950s, and the maximum increase rate of salinity is about 0.14 psu/a in the Bohai Bay. The high salinity tongue extended significantly from the NHS into the BHS. The intensified eastern wind field is related to the western intrusion of the NHS warm current, which probably leads to the moving forward of the high salinity water mass into the BHS. However, it is rather different from the salinity distribution characteristics between the 1950s and the 1960s. The extensive precipitation in the 1960s could lead to an increase in the discharge of the Huanghe River, which might result in the decrease of salinity in the BHS. But the salinity isoline of 32.in the NHS still extended significantly into the BHS in the 1960s. Since the 1980s, the patterns of salinity distribution have changed thoroughly. The salinity in the central area of the BHS was low, while the salinity in the Bohai Bay and the Liaodong Bay was higher than the other regions with its horizontal salinity gradient decreasing in the 1980s. The Empirical Orthogonal Function Analysis （EOF） is also conducted to study the interannual salinity variability of the BHS and the NHS. The correlation coefficient between the time coefficie

关键词： salinity the Bohai Sea the Northern Huanghai Sea decadal variability interannual variability

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高氯废水中的化学需氧量测定方法探讨

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污染防治技术 2007年第5期20卷 82-84页

作者：田东梅淮安市淮阴区环境监测站江苏淮阴2.3300

针对高氯废水化学需氧量的测定方法以及原理作了阐述,最终确定一种最直接、简便、准确的硫酸汞倍数添加法测定CODcr。

关键词：高氯废水化学需氧量测定硫酸汞添加

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水环境质量标准的发展探讨

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上海环境科学 2003年第6期22卷 411-413页

作者：顾勇国上海市嘉定区环境监测站上海201800

从国家水环境质量标准的修改和测试项目的增减出发,阐述了我国水环境质量标准发展的历史和现状,以及可能产生的影响。分析了国内外水环境质量标准的差异,并提出相关建议。

关键词：水环境质量标准颁布部门地表水环境标准值

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Zinc Nutrition and Metabolism of Plants as Influenced by Supply of Phosphorus and Zinc

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Pedosphere 1999年第3期9卷 265-274页

作者： YANG ZHIMIN ZHENG SHAOJIAN and HU AITANG(College of Natural Resources and environmental Sciences, Nanjing Agricultural University, Nanjing 2.0095(china))(Dept. of Agro-environmental Management, Kyushu National Agricultural Experiment station, Nishigoshi, College of Natural Resources and environmental Sciences Nanjing Agricultural University Nanjing 210095 China Dept. of Agro-environmental Management Kyushu National Agricultural Experiment Station Nishigoshi Kumamoto 861-1192 Japan

A solution culture experiment was conducted to investigate the growth, the accumulation and translocation of Zn, and the metabolic changes of 2. days old plants of corn and wheat with the varied supply of phosphorus (0, 0.12. 0.6 and 3.0 mmol L-1 ) and zinc (0.1 and 2.0 μmol L-1 ) under controlled environmental conditions. The results showed the highest dry matter production of both corn and wheat under the moderate combination of phosphorus (0.6 mmol L-1 ) and zinc (2.0 μmol L-1 ) as compared with other imbalance applications of phosphorus and zinc. Excessive P supply significantly inhibited the translocation of Zn from roots of corn to the aboveground part, thus decreasing the content of Zn in the shoots. Application of 3.0 mmol L-1 P could also reduce the water-soluble Zn in plant tissues, leading to an increase in the cell plasma membrane permeability, a decrease in the dehydrogenase activity in roots and the activity of nitrate reductase in leaves, and a decline in the uptake of nitrate by plants. A similar decrease occurred in superoxide dismutase (SOD) and plasma membrane adenosine triphosphatase (ATPase) activity in Zn-deficient ***, with increasing P supply, the activity of ATPase in both corn and wheat increased and reached the maximum at the p-supplying level of 3.0 mmol L-1. Similar to the effect of high P supply, no or low P (0.12.mmol L-1 ) supply could be detrimental to dry matter production and physiological functioning of the plants. Corn plants showed a more significant response to the imbalance supply of P and Zn than wheat plants. The possible physiological and biochemical mechanism of phosphorus-zinc antagonistic interaction in corn and wheat might be attributed to decrease in physiological availability and activation of Zn.

关键词： corn metabolism phosphorus wheat zinc

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