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The situation of China suburbs soil pollution is becoming severe with the rapid development of economy and high strength of human activity. Based on the analysis of the characteristics of soil pollution and the existing restoration technology, the ecological restoration technologies being accordant with the status of suburbs development are carefully picked out. The selection principle of ecological...
Four limestone soil profiles are selected as the subject investigated in karst region, middle Guizhou Province, China. Through carefully sampling and analyzing, this paper discussed geochemical characteristics of U and Th during formation of limestone soils, and their potential risk on superficial environment. It is concluded as follows: (1) the rock-soil interface is an important place for geochemical...
The ecological benefits of 10 perennial ornamental grasses named Andropogon scoparius, Bouteloua curtipendula, Bouteloua gracili, Stipa grandis, Festuca arundinacea, Elytrigia repens, Elymus nutans, Agropyron cristatum, Dactylis glomerata and Bromus inermis were studied by determining their ability of CO2 fixation and O2 release, capacity of water releasing and energy absorbed by transpiration, dust...
The paper studies change of enzyme activity with increasing cropping years in greenhouse soil. We furthermore took mancozeb, which was a fungicide commonly used in greenhouse soil in North China, as an example to study the change difference of greenhouse soil enzyme activity with different cropping years after addition of external agricultural chemical material. We found that with increasing cropping...
The sodium sulfate in the surrounding environment of cemented soil may affect its mechanical property, which may cause some serious damage to structures. In order to study the erosion effect mechanism, a series of tests were conducted on the cemented soil blocks which were cured in the sodium sulfate solutions with various concentrations and ages. The testing results show that the sodium sulfate solution...
By spraying applying Brilliant Blue as tracer, the improvements of a 1 year and a 5 year rice cultivation practice were quantitatively described in fields in comparison with a control in a sodic alkaline soil in Da'an county, Jilin Province of China. Brilliant Blue FCF solution with a concentration of 0.088 mol L-1 was applied to the treated soils. Dye image was photographed layer by layer in the...
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