Based on the achievement of local ecological geochemical survey,the selenium in surface layer soil of Zhangqiu green Chinese onion within production area is systematically studied in this study.And the ecological geoc...Based on the achievement of local ecological geochemical survey,the selenium in surface layer soil of Zhangqiu green Chinese onion within production area is systematically studied in this study.And the ecological geochemical characters of selenium both in surface layer soil and in green Chinese onions are analyzed,and the relationship between the selenium in plant and soil is discussed.The results show that soil in Zhangqiu is rich in selenium,and it is suitable to develop the selenium-rich green Chinese onion products.展开更多
Vanadium is a trace element widely distributed in the Earth’s crust. Naturally high levels of vanadium are recognized mainly in basic rocks and minerals, particularly in titaniferous magnetite. And the anthropogenic ...Vanadium is a trace element widely distributed in the Earth’s crust. Naturally high levels of vanadium are recognized mainly in basic rocks and minerals, particularly in titaniferous magnetite. And the anthropogenic sources of vanadium include fossil fuel combustion and wastes including steel-industry slags. In the last few years, the authors have made investigations and assessments on the environmental geochemistry and ecological risk of vanadium in the Panzhihua mining and smelting area. In the study area, anthropogenic vanadium resulted from mining, extracting and smelting of V-Ti magnetite; vanadium pollution of topsoil and sediments occurs mainly in the mining and extracting area, smelting area, slag dumping area, tailing dam and coal mining area. In the soil, the chemical speciation of vanadium shows: insoluble residue > organically bound > Fe (amorphous) oxide-bound > Mn oxide-bound > soluble component. Vanadium pollution can cause potential harmful effects on ecological systems, and lead to animal poisoning and human disease. So vanadiam pollution should be monitored on a regular basis in the Panzhihua area.展开更多
[Objectives]To realize proper,update and dynamic analysis of the results of ecological geochemical survey,and provide useful information for government macro-decisions,land resources planning,agricultural structure ad...[Objectives]To realize proper,update and dynamic analysis of the results of ecological geochemical survey,and provide useful information for government macro-decisions,land resources planning,agricultural structure adjustment,ecological environment monitoring,governance and evaluation.[Methods]This paper conducted the analysis with the aid of the computer database technology and GIS technology,as well as the regional geochemical database information system(GeoMDIS)developed by the Development Research Center of the China Geological Survey.[Results]It established a database of agricultural ecological geochemical survey in the lower Yellow River Basin of Shandong Province,realized the collection,storage,update and statistical analysis management of various sample data.[Conclusions]Through the discussion on the construction of agricultural ecological geochemical survey database,it is expected to provide an effective information platform for the future use of these data to serve government macro-decisions,land and resource planning,agricultural structure adjustment,ecological environment improvement,monitoring,governance and evaluation.展开更多
基金Supported by China Geological Survey Bureau Project(1212010310306)~~
文摘Based on the achievement of local ecological geochemical survey,the selenium in surface layer soil of Zhangqiu green Chinese onion within production area is systematically studied in this study.And the ecological geochemical characters of selenium both in surface layer soil and in green Chinese onions are analyzed,and the relationship between the selenium in plant and soil is discussed.The results show that soil in Zhangqiu is rich in selenium,and it is suitable to develop the selenium-rich green Chinese onion products.
基金This study was granted by the China Ministry of Science and Technology under the program of "Ecological and Environmental Monitoring, Forecasting and Management System in the Mining Area" (No. 2004DIB3J110) and "Development and Experiment of Ecological and Environmental Monitoring and Forecasting Technology for the Mining Area" (No. 2005BA901A03).
文摘Vanadium is a trace element widely distributed in the Earth’s crust. Naturally high levels of vanadium are recognized mainly in basic rocks and minerals, particularly in titaniferous magnetite. And the anthropogenic sources of vanadium include fossil fuel combustion and wastes including steel-industry slags. In the last few years, the authors have made investigations and assessments on the environmental geochemistry and ecological risk of vanadium in the Panzhihua mining and smelting area. In the study area, anthropogenic vanadium resulted from mining, extracting and smelting of V-Ti magnetite; vanadium pollution of topsoil and sediments occurs mainly in the mining and extracting area, smelting area, slag dumping area, tailing dam and coal mining area. In the soil, the chemical speciation of vanadium shows: insoluble residue > organically bound > Fe (amorphous) oxide-bound > Mn oxide-bound > soluble component. Vanadium pollution can cause potential harmful effects on ecological systems, and lead to animal poisoning and human disease. So vanadiam pollution should be monitored on a regular basis in the Panzhihua area.
文摘[Objectives]To realize proper,update and dynamic analysis of the results of ecological geochemical survey,and provide useful information for government macro-decisions,land resources planning,agricultural structure adjustment,ecological environment monitoring,governance and evaluation.[Methods]This paper conducted the analysis with the aid of the computer database technology and GIS technology,as well as the regional geochemical database information system(GeoMDIS)developed by the Development Research Center of the China Geological Survey.[Results]It established a database of agricultural ecological geochemical survey in the lower Yellow River Basin of Shandong Province,realized the collection,storage,update and statistical analysis management of various sample data.[Conclusions]Through the discussion on the construction of agricultural ecological geochemical survey database,it is expected to provide an effective information platform for the future use of these data to serve government macro-decisions,land and resource planning,agricultural structure adjustment,ecological environment improvement,monitoring,governance and evaluation.
