We analyzed bulk thickness, saturated hydraulic conductivity, saturated moisture, and total nitrogen (TN), complete phosphorus (TP), substance oxygen need (COD), copper (Cu), zinc (Zn), cadmium (Cd) concentrations in toxins. For biochar and compost with amount ratio of 0.51.5 (1) and 11 (2), 1%PAM application had the greatest effect on earth permeability (including bulk density, saturated hydraulic conductivity, and saturated moisture). The result purification of TN and COD was better under the healthiness of biochar and compost (1) with 0.5% PAM amendment than that with 1% PAM amendment. Under biochar and compost (1) with 1%PAM treatment, the adsorption rate of Zn, Cd, Cu was 99.9%, 99.7%, and 97.2%, respectively. In general, biochar and compost (volume ratio of 0.51.5) with 1% PAM could possibly be recommended since the news associated with the sponge city green land in Xixian New Area.To investigate the characteristics of heavy metal and rock air pollution brought on by traffic as well as its possible ecological risks, we measured the actual quantity of metal elements in samples collected from a traffic trunk area road in Lanzhou City with atomic consumption spectrophotometer. The single factor index strategy and prospective ecological danger index strategy were used to gauge the degree of pollution and possible environmental dangers, then the consequences of rock pollution on chlorophyll and calcium (Ca) items in greening plants were reviewed. The results revealed that the total amount of heavy metals including chromium (Cr), manganese (Mn), zinc (Zn), copper (Cu) and nickel (Ni) within the grounds increased significantly, with Cr, Cu and Pb reaching moderate air pollution level. The degree of prospective environmental risk had been Cu>Pb>Cr>Ni>Zn>Mn. Sophora japonica, Rosa chinesis, Prunus ceraifera, and Euonymus japonicas revealed various buildup impacts on Pb, Mn, Zn, and Ni. The content of chlorophyll within the leaves of deciduous types S. japonica, R. chinesis and P. ceraifera had been greater in the roadside sampling point than that in the control point, whilst the design had been simply the other in evergreen species E. japonicas and P. orientalis. Foliar Ca content of greening plants into the roadside sampling point ended up being higher than that within the control point, suggesting that large chlorophyll and Ca contents may be useful to plant survival in the hefty metal polluted location. Taken collectively, traffic operation generated the buildup of heavy metals (Cr, Mn, Zn, Cu, and Ni) into the earth regarding the research location. S. japonica, R. chinesis, P. ceraifera and E. japonicas could build up Pb, Mn, Zn and Ni, which may be properly used as greening plants in soils contaminated by those heavy metals.The application of Water-Sediment Regulation Project provides abundant freshwater for the Yellow River Delta, changes water and sediment condition, along with brings lots of exogenous substances. Utilizing orthogonal test with three factors and four levels, we examined the results of liquid condition, deposit burial depth and exogenous nitrogen input from the development of wetland plant, Suaeda salsa. The outcome revealed that deposit burial had great effect on protein content and SOD task. Nitrogen input had great effect on POD activity. pet activity had not been impacted by sediment burial, nitrogen input and water depth. The water level manipulation had significant impact on leaf, stem and total dry body weight. Aided by the increases of liquid level, leaf, stem and total dry weight showed a decreasing trend, utilizing the optimum values (25.70, 40.86, 69.73 g) in the 2 cm water depth. There was clearly Cp2SO4 no effectation of nitrogen feedback and sediment burial on dried out weight. The results of range analysis indicated that the result of water depth on leaf, stem, root and total dry weight ended up being great, and followed closely by nitrogen feedback and deposit burial, with an optimal mixture of 2 cm water depth +12 cm sediment burial + 9 g·m-2 nitrogen input. These findings proposed that liquid condition played a decisive role in affecting the growth of S. salsa. Consequently, even more attention ought to be paid to the control over water depth along the way of liquid and sediment regulation.Yellow River Delta is an important circulation part of seaside saline-alkali land in China. Revegetation could be the primary technology for ecological renovation during saline-alkali land amelioration. To explore the effects of different vegetation kinds on soil improvement in saline-alkali land and get the suitable design within the Yellow River Delta, four tree-grass ingredient designs, Salix americana+Distichlis spicata, S. matsudana+D. spicata, Tamarix chinensis+Medicago sativa, and Fraxinus chinensis+T. chinensis+M. sativa, were arranged, with pure S. americana woodland once the control. Twenty indicators, including earth moisture actual variables, saline-alkali content, soil nutrient contents, and microorganism quantity etc. were assessed. Principal component analysis, cluster analysis and fuzzy mathematics were used to gauge soil adjustment aftereffect of various vegetation combinations. The outcomes showed that all mixture designs significantly improved earth actual and che-mical properties in coastal saline-alkali land by increasing earth porosity, earth water storage space, earth organic matter content, available nutrient content and soil microorganism quantity and decreasing earth density. Among all the models, the tree-shrub-grass combined style of F. chinensis+T. chinensis+M. sativa was the best in inhibiting salt and alkali stress and increasing earth nutritional elements and microorganism variety, whereas the tree-grass mixed type of S. matsudana+D. spicata was the most truly effective in increasing earth liquid physical properties. The combined ramifications of different plant life habits on soil amelioration in coastal saline-alkali land associated with the Yellow River Delta had been arranged so as of F. chinensis+T. chinensis+M. sativa> S. matsudana+D. spicata> S. americana+D. spicata> T. chinensis+M. sativa.To understand the reaction of Calamagrostis angustifolia wetland of this Sanjiang Plain to alterations in snowfall address, we examined the carbon dioxide emission flux for the removed snow treatment (0 cm, RS), the additional snow therapy (50 cm, AS) and also the control (20 cm, CK) of a C. angustifolia wetland, and their relations with environmental aspects utilizing the approach to the fixed chamber-gas chromatography. The outcomes showed that soil heat, earth water content, and carbon emissions had been cheapest during the snow-covering period under all treatments, and gradually increased as time passes.
Categories