Yimeng Mountain Area is the key soil and water loss control zone in east China,with aboundant natural and cultural tourism *** view of its status and development of rural tourism in Yimeng Mountain Area,analyze its ma...
Yimeng Mountain Area is the key soil and water loss control zone in east China,with aboundant natural and cultural tourism *** view of its status and development of rural tourism in Yimeng Mountain Area,analyze its market conditions;get a conclusion that development of rural tourism in ecological fragile area should follow principles of constructing pluralistic,compound economic structure and taking a path of connotative *** the basis of them,put forward development modes for Yimeng ecological friable area,that are,to construct vertical product integration,horizontal product bundling and heir corresponding development ways of rural tourism,in which the former includes personalized,coupling, service networking,normalization and information ways,while the latter includes travel education and health-keeping *** matter which mode was taken,it must be on the premise of not disturbing old agriculture ecology,add additional value to the maximum,select optimum development path according to its characteristics.
In water pollution control,wetlands aquatic plants can remove nitrogen,phosphorus,heavy metals and organic pollutants in waste water through substantial absorption,utilization and enrichment by their own growth and me...
In water pollution control,wetlands aquatic plants can remove nitrogen,phosphorus,heavy metals and organic pollutants in waste water through substantial absorption,utilization and enrichment by their own growth and metabolism,through the oxygen transmission and synergy with microorganisms to remove pollutants and by inhibiting the growth of low algae to control the *** this paper,the author summarized the purification function of aquatic plants of wetlands in water pollution control from domestic and foreign countries in current,focused on the several aspects which the aquatic plants' removal effect for the nitrogen,the phosphorus,the heavy metal,the organic pollutant and other poisonous substances.
Highly selective molecularly imprinted silica gel for 2,4-Dimethylphenol were synthesized.A surface molecular imprinting technique with a sol-gel process on the supporter of activated silica gel could be used for soli...
Highly selective molecularly imprinted silica gel for 2,4-Dimethylphenol were synthesized.A surface molecular imprinting technique with a sol-gel process on the supporter of activated silica gel could be used for solid-phase extraction high performance liquid chromatography(MI-SPE-HPLC) determination of 2,4-Dimethylphenol in river *** prepared 2,4-Dimethylphenol-imprinted silica sorbent showed higher adsorption capacity,and significant selectivity for 2,*** MIP-SPE method showed higher selectivity to 2,4-Dimethylphenol than the Non-imprinted silica SPE *** 2,4-DMP MIP were used as the sorbent in solid-phase extraction to determine 2,4-DMP in water samples with satisfactory recovery of 87.3% other than that of NIP with 54.2%.
With spontaneous combustion,coal waste piles release sulfur dioxide,hydrogen sulfide,carbon monoxide and nitrogen oxides,which become the most serious source of pollution and threaten the ecological safety and human h...
With spontaneous combustion,coal waste piles release sulfur dioxide,hydrogen sulfide,carbon monoxide and nitrogen oxides,which become the most serious source of pollution and threaten the ecological safety and human health in mining *** oxidation is the key of pollution release in coal waste piles and numerous studies have identified the potential of phosphate rock to control pyrite oxidation. So it seems to be a new approach to use waste phosphate rock in tailings to control the pollution of coal waste piles with spontaneous *** paper analyses the feasibility of using the waste phosphate rock treatment to prevent coal waste piles spontaneous combustion to control pollution and the role of waste phosphate rock playing,including formatting of oxidation film and bio-film,which act as a physical and chemical barrier,and providing nutrition for microbial and plant.
Using quantification theory I,an analysis of the relation of soil water and qualitative factors, such as,slope degree,slope aspect,slope position,and soil in Wangjiagou watershed area has been done. The study aims to ...
Using quantification theory I,an analysis of the relation of soil water and qualitative factors, such as,slope degree,slope aspect,slope position,and soil in Wangjiagou watershed area has been done. The study aims to quantify the factors influencing soil *** factors are the slope,soil,slope degree, and slope position in descending *** scientifically facilitating realizes afforestation site type's classification and afforestation site digital products on geographical information system(GIS).Then,by using computer science,GIS and decision-making technique,the small watershed afforestation site management system(S WASMS) is *** is comprise of attribute data sub-module,graphic data submodule, application sub-module and output *** these,the process,analysis and evaluation of afforestation site information can be *** gives some reference for realize scientifically,quantitative and rapidly afforestation.
A cloud point extraction(CPE) was developed for preconcentration of trace amount of Cd,Cr,Cu, Pb and Zn in water samples prior to determination by inductively coupled plasma optical emission spectrometry(ICP OES)....
A cloud point extraction(CPE) was developed for preconcentration of trace amount of Cd,Cr,Cu, Pb and Zn in water samples prior to determination by inductively coupled plasma optical emission spectrometry(ICP OES).Various parameters such as pH value,amount of 5-Br-PADAP,amount of Triton X-114,equilibration temperature and incubation time were examined with single factor tests to gain the optimum *** the optimum condition,enrichment factors of 19,28,32,30,16,detection limits of 0.4,1.8,1.2,1.6 and 2.8μg·L and relative standard deviations of 1.9,3.2,4.5,3.7and 3.5 were obtained for Cd,Cr,Cu,Pb and Zn,*** for the spiked samples ranged from 80-125%.The method was successfully performed to analyze Cd,Cr,Cu,Pb and Zn in water samples.
Soil nutrient content can directly influence the agricultural production and environmental safety. As the result of the influence of natural factors and human factors,the distribution of soil nutrient has spatial *** ...
Soil nutrient content can directly influence the agricultural production and environmental safety. As the result of the influence of natural factors and human factors,the distribution of soil nutrient has spatial *** is the research *** object of this study is revealing the space distribution of soil nutrient and overall level in Linyi,using investigation,chemical analyses,traditional statistics,geostatistics and *** study measured the contents of total nitrogen,total phosphorus,total potassium and organic matter in *** results indicate that the four soil nutrient have semi-variance ***,their spatial structure features are *** content of total nitrogen was mainly affected by natural factors,but the contents of total phosphorus,total potassium and organic matters were mainly affected by random factors. And their space distributions were *** addition,the ranges of soil nutrient were smaller than the distances between sample ***,the accuracy of this study is not high *** the future study, the distance between two sample points had better to be smaller than the range.
暂无评论