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Organic Phosphorus in Shallow lake Sediments in Middle and Lower Reaches of the Yangtze River Area in China

Pedosphere 2008年第3期18卷 394-400页

作者： JIN Xiang-Can WANG Sheng-Rui CHU Jian-Zhou WU Feng-Chang State Environmental Protection Key Laboratory for lake Pollution Control Research Center of Lake Eco-EnvironmentChinese Research Academy of Environmental Sciences Beijing 100012 （China） Colleges of Resource and Environment Hebei Agriculture University Baoding 071001 （China） State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang550002 （China）

Thirteen sediment core samples(0-10 cm) were taken from the seven lakes in the middle and lower reaches of the Yangtze River to determine the contents and distributions of organic phosphorus(P) fractions in the sediments of the shallow lakes in the *** organic P fractions in the sediments were in the order of moderately labile organic P(MLOP) > moderately resistant organic P(MROP) > highly resistant organic P(HROP) > labile organic P(LOP),with average proportional ratios of 13.2:2.8:1.3:***,MLOP,and MROP were significantly related to the contents of total organic carbon(TOC),water-soluble P(WSP),algal-available P(AAP),NaHCO3-extractable P(Olsen-P),total P(TP),organic P(OP),and inorganic P(IP).However,HROP was significantly related to OP and weakly correlated with TOC,WSP,AAP,Olsen-P,TP or *** suggested that organic P,especially LOP and MLOP in sediments,deserved even greater attention than IP in regards to lake *** terms of organic P,sediments were more hazardous than soils in lake *** OP concentrations were higher in moderately polluted sediment than those in heavily polluted sediment,LOP and MLOP were higher in the heavily polluted sediment,which indicated that heavily polluted sediment was more hazardous than moderately polluted sediment in lake eutrophication.

关键词： bioavailability chemical extracted phosphorus lake sediment middle and lower reaches of the Yangtze River area organic phosphorus fractions

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Atmospheric correction of HJ-1A/B CCD images over Chinese coastal waters using MODIS-Terra aerosol data

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Science China(Technological Sciences) 2010年第S1期53卷 191-195页

作者： TIAN LiQiao 1,LU JianZhong 1,CHEN XiaoLing 1,2,3,YU ZhiFeng 1,XIAO JingJing 1,QIU Feng 1 & ZHAO Xi 1 1 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China 2Key Laboratory of Poyang lake Wetland and Watershed Research,Ministry of Education,Jiangxi Normal University,Nanchang 330022,China 3 The Key Laboratory of Poyang lake Environment and Resource Utilization,Ministry of Education,Nanchang University,Nanchang 330031,China State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University Wuhan China Key Laboratory of Poyang lake Wetland and Watershed Research Ministry of Education Jiangxi Normal University Nanchang China The Key Laboratory of Poyang lake Environment and Resource Utilization Ministry of Education Nanchang University Nanchang China

This paper demonstrates an atmospheric correction method to process HJ-1A/B CCD images over Chinese coastal waters with the aid of MODIS-Terra aerosol *** on the assumption of zero water-leaving radiance at the two near-infrared (NIR)bands or the shortwave infrared(SWIR)bands,the atmospheric aerosol optical depth(AOD)is firstly retrieved from MODIS-Terra with a simple extension of the NIR-SWIR combined atmospheric correction approach embedded in SeaDAS (SeaWiFS data analysis system).Then the"turbid"and"non-turbid"waters are separated by the turbid water *** probability of AOD at 551 nm band is derived based on the NIR information over"non-turbid"waters and FLAASH model is selected to do the atmospheric correction of the HJ-1A/B CCD imagery using the AOD values of highest probabilities as ***,according to the histogram of the AOD distribution at 551 nm band,the studied turbid water area is divided into several blocks and HJ-1A/B CCD imagery is corrected with the corresponding AOD values displayed with the highest frequency in each *** method has been applied to several HJ-1A/B images over Chinese coastal waters and validated by synchronous in-situ *** results have shown that this method is effective in the atmospheric correction process of HJ-1A/B CCD images for ocean color remote sensing study and application in the coastal waters.

关键词： ocean color remote sensing atmospheric correction turbid coastal waters HJ-1A/B MODIS

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Preliminary discussion of low-salinity hydrothermal fluid mineralization

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Chinese Science Bulletin 1999年第S2期44卷 141-143页

作者： ZHENG Mianping R & D Center of Saline lake and Epithermal Deposits, Chinese Academy of Geological Sciences, Beijing 100037, China R and D Center of Saline lake and Epithermal Deposits Chinese Academy of Geological Sciences Beijing 100037 China

REVIEWING the history of the geology of mineral deposits, we may find that in the first fifty years of thetwentieth century the magmatic-hydrothermal theory of ore deposition was the most prevalent, whichgave impetus to the development of the geology of mineral deposits. In the 1960s, the drilling of theSalton Sea geothermal field, California, the United States, and discovery and study of the Red Sea seafloor hot brines and large amounts of metal sulfides removed therefrom led to the rise of the brine theory ofmineral deposition, thus elucidating the origin of massive metal sulfides and promoted the discoveryand exploration of metal deposits. After the 1970s and the 1980s, through a study of the hydrothermal ore fluids of modern hotsprings. geologists came to realize that there exist low-salinity hydrothermal ore fluids other than

关键词： low-salinity hydrothermal fluid mineralization.

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Application of Artificial Intelligence Algorithm in Image Processing for Cattle Disease Diagnosis

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Journal of Intelligent Learning Systems and Applications 2022年第4期14卷 71-88页

作者： Bezawit lake Fekade Getahun Fitsum T. Teshome Department of Computer Science Dilla University Dilla Ethiopia Department of Computer Science Addis Ababa University Addis Ababa Ethiopia Department of Agricultural and Biological Engineering Tropical Research and Education Center IFAS University of Florida Home-stead USA

Livestock is a critical socioeconomic asset in developing countries such as Ethiopia, where the economy is significantly based on agriculture and animal husbandry. However, there is an enormous loss of livestock population, which undermines efforts to achieve food security and poverty reduction in the country. The primary reason for this challenge is the lack of a reliable and prompt diagnosis system that identifies livestock diseases in a timely manner. To address some of these issues, the integration of an expert system with deep learning image processing was proposed in this study. Due to the economic significance of cattle in Ethiopia, this study was only focused on cattle disease diagnosis. The cattle disease symptoms that were visible to the naked eye were collected by a cell phone camera. Symptoms that were identified by palpation were collected by text dialogue. The identification of the symptoms category was performed by the image analysis component using a convolutional neural network (CNN) algorithm. The algorithm classified the input symptoms with 95% accuracy. The final diagnosis conclusion was drawn by the reasoner component of the expert system by integrating image classification results, location, and text information obtained from the users. We developed a prototype system that incorporates the image classification algorithms and the reasoner component. The evaluation result of the developed system showed that the new diagnosis system could provide a rapid and effective diagnosis of cattle diseases.

关键词： Deep Learning Expert System Livestock Machine Learning Neural Network

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Identifying Host Galaxies of Extragalactic Radio Emission Structures using Machine Learning

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Research in Astronomy and Astrophysics 2023年第7期23卷 139-153页

作者： Kangzhi Lou Sean E.lake Chao-Wei Tsai National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China

This paper presents an automatic multi-band source cross-identification method based on deep learning to identify the hosts of extragalactic radio emission *** aim is to satisfy the increased demand for automatic radio source identification and analysis of large-scale survey data from next-generation radio facilities such as the Square Kilometre Array and the Next Generation Very Large *** demonstrate a 97%overall accuracy in distinguishing quasi-stellar objects,galaxies and stars using their optical morphologies plus their corresponding mid-infrared information by training and testing a convolutional neural network on Pan-STARRS imaging and WISE *** with an expert-evaluated sample,we show that our approach has 95%accuracy at identifying the hosts of extended radio *** also find that improving radio core localization,for instance by locating its geodesic center,could further increase the accuracy of locating the hosts of systems with a complex radio structure,such as C-shaped radio *** framework developed in this work can be used for analyzing data from future large-scale radio surveys.

关键词： techniques:image processing surveys methods:data analysis

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A preliminary knowledge-driven prediction model of snail distribution in the Poyang lake region

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Chinese Science Bulletin 2008年第1期53卷 115-123页

作者： ZHAO An1,2,3 & BAO ShuMing1 1 The Key Lab of Poyang lake Ecological Environment and Resource Development, Jiangxi Normal University, Nanchang 330022, China 2 Institute of Geographic Sciences and Resources Research, Chinese Academy of Sciences, Beijing 100101, China 3 School of Geography and Environmental Sciences, Jiangxi Normal University, Nanchang 330022, China

Present monitoring and prediction of schistosomiasis’s intermediate parasite, snail, are based on re-mote sensing image’s spectral signatures, and the calculation result is in fact an incom-plete-constraints solution. TM image of the Poyang lake region on October 31, 2005 was combined with GIS thematic data (DEM, boundary of the Poyang lake, vegetation, soil and land use) to make a prediction on snail spatial distribution in the region by remote sensing, geo-informatics and knowl-edge-driven modeling according to mechanism of snail occurrence. Result shows that with change of overall fuzzy membership of snail occurrence from high to low, snail occurrence of the snail samples of validation group goes up to 81% within 10% high fuzzy membership range, denoting high efficiency of the model in predicting snail occurrence.

关键词：鄱阳湖区域蜗牛分布模糊分类血吸虫病

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Study on Control Countermeasures of Agricultural Non-point Source Pollution in lakeside Belt of Poyang lake——Taking Duchang Section in the Lower Reaches of Poyang lake as Example

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Meteorological and Environmental Research 2011年第7期2卷 62-65页

作者： ZHANG Yang-fan1,TAO Chun-yuan1,HUANG Yi2 1.Research Center of Poyang lake Eco-economy,Jiujiang University,Jiujiang 332005,China 2.Duchang Poyang lake Eco-economic Zone Construction Office,Duchang 332600,China

[Objective] The aim was to study the control countermeasures of agricultural non-point source pollution in lakeside belt of Poyang lake.[Method] The current situation of water quality of Poyang lake was analyzed firstly,then the causes of agricultural non-point source pollution in Duchang section of Poyang lake were studied,finally corresponding control countermeasures were put forward.[Result] Agricultural non-point source pollution in Duchang section of Poyang lake was mainly related to the rapid development of pearl industry and livestock industry,aggravated soil erosion and excessive utilization of *** on analysis of current environmental situation and bearing capability of resources in Poyang lake basin,agricultural non-point source pollution would be controlled through the reduction of external source pollution load,restoration of river wetland and construction of aquatic *** the primary implementation of agricultural non-point source pollution control project,the amount of agricultural non-point source pollution in demonstration plot was reduced,and the quality of effluent met the first Class (Class A) of state Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002).Meanwhile,biodiversity index in river wetland increased by about 30%,so the pollution load entering Poyang lake was decreased.[Conclusion] The study could provide technology integration and demonstration for the environmental remediation in lakeside belt of Poyang lake.

关键词： lakeside belt of Poyang lake Agricultural non-point source pollution Duchang Countermeasures China

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WO PROBLEMS CONCERNING FLOOD CONTROL AND DISASTER REDUCTION

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Natural Disaster Reduction in China 1995年第2期 80-85页

作者： Min Qian(Hydrometeological Station of the Poyung lake,Jiangxi Province)

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Dating sediments on several lakes inferred from radionuclide profiles

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Journal of Environmental Sciences 1998年第1期10卷 58-65页

作者： Xiang Liang lake Sediment and Environment Laboratory,Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences,Nanjing 210008,China

In this paper, several sediment cores from three lakes (Gucheng lake, Dianchi lake and Dabusopao lake) in the different regions of China were dated radiometrically by 210 Pb, 137 Cs and in Dianchi also by 241 Am. The study shows that the profiles of 137 Cs in lake sediment of China generally have 2—4 distinct chronological markers, i.e. the onset of fallout in 1954 and peak fallout in 1963, 1974 and 1986. As many places of the northern hemisphere, the peak fallout in 1963 was the result of the atmospheric atomic weapons test. But in some areas of China, there may be have one or two other peaks of 137 Cs fallout, one can derive from Chernobyl fallout in 1986 and the other is caused by the nuclear testing fallout in early 1970s. So in these areas, the profiles of 137 Cs can have 2 or 3 peaks as the time markers. 241 Am, which is another fallout product from nuclear weapons testing, also provides a useful dating marker in Dianchi. These time markers are of considerable value to confirm 210 Pb dates in the three lakes. Despite there are some questions remain concerning the interpretation of these radionuclide records in lake sediments, coupling with 210 Pb and 137 Cs (and/or 241 Am) is suggested to be a valuable limnological tool for establishing sediment chronologies for the lake sediments in China.

关键词： lake sediment radionuclide dating method.

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Assessment of nutrient sources and paleoproductivity during the past century in Longgan lake, middle reaches of Yangtze River, China

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Acta Geochimica 2006年第S1期 18-19页

作者： Yanhong WU, Sumin WANG Key Laboratory of lake Sedimentation and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China

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