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[Objective] The soil nutrient characteristics and influencing factors of surface soil gully erosion for low hilly terrain in the black soil area were studied in order to provide data and theoretical support for the rational use of land resources, accurate management of soil fertility, and restoration of degraded soil in the black soil area. [Methods] Surface soil gully erosion for different types of eroded ditches in Yanshou County, Heilongjiang Province was determined by measuring and analyzing soil samples from the 0—40 cm layer in each part of the erosion gully. [Results] ① The contents of soil organic matter, total nitrogen, total phosphorus, total potassium, available phosphorus, available potassium, and alkali hydrolyzable nitrogen were significantly different (pA2>A1>A3 in the 0—40 cm layer as erosion gullies developed, and the soil was gradually degraded. [Conclusion] Soil nutrients had an overall significant negative correlation with bulk density, and soil nutrients were positively correlated with water stable aggregates and clay content. Soil profile differences were the fundamental reason for the variation in soil nutrients. Erosion gully development was the secondary reason for nutrient changes. The contents of soil organic matter, total nitrogen, and total potassium were also affected by positional differences.

Creating green roads is an objective requirement for the transformation and development of the transportation industry. It is also an objective requirement for advancing the supply-side structural reform of the transportation industry and building a satisfactory transportation for the people. It is also an objective requirement for achieving a beautiful China. The author puts forward some practical experiences of green highway construction through the construction of the typical demonstration project of the Guangji expressway green highway.

Construction dust falls to the snow cover and the surface of the glacier to form a fouling layer to absorb more solar radiation and reduce the intensity of surface albedo, thereby accelerating the melting of the glacier, which is the main factor affecting the glacial environment in the Highway construction. This article adopts the combination method of wind tunnel experiment and numerical simulation was used to calculate the impact range of construction dust. The results show that with increasing of particle size, the diffusion range of dust decreased while the settlement speed increased. High dust concentration area (> 4mg / m3) is generally distributed within 1000m around the construction site. The specific extension direction is directly related to the local terrain and wind direction, and the height direction is generally not more than 300m. According to the above simulation results, for preventing and reducing the impact of highway construction on the glacial environment, the requirements of route selection and construction dust control measures was put forward, which played an important role and significance in guiding the highway design and construction and reducing the impact of highway construction on the glacial environment.

Standardization for environmental protection in the transportation industry is an important driving force for the development of green transportation. This study introduces the current status and main problems of environmental protection standardization in transportation. In addition, major countermeasures, such as strengthening the system construction and basic support, are studied and proposed to provide theoretical support and research basis for future standardization in related areas.

Based on the investigation on the collection and treatment of the runoff from the bridge-deck of some expressways involving sensitive water bodies, this paper proposed an integrated design idea of the emergency storage facility and the bridge-deck rainwater runoff treatment facility for the transportation accident of dangerous chemicals in the expressway. The integrated design idea improves the disadvantages of simultaneous treatment of rainwater and accident-water in the bridge-deck runoff treatment system. The process flow, plane layout, functional unit volume design, conversion device, and control system involved in the integrated design are discussed.

With Yunfu Luoding city to Maoming Xinyi city highway as the support, builders focus on introducing innovative technology in the process of creating green road demonstration project, promoting energy conservation and emission reduction, reducing common quality problems, improving the technical level and management level of green road construction, and playing a reference role for the scientific application of innovative technology in common national and provincial highways.

This is paper is taking the design of wildlife corridor from Mingshui to Hami section of national expressway from Beijing to Urumqi as an example. From January 2015 to May 2018, the project team monitored and studied the wildlife utilization of 13 corridors along the route from Mingshui to Hami. High utilization rate was detected with 3 channels.

Taking Guangji expressway as an example, this paper focuses on the goal of building “demonstration road of highway construction, demonstration road of green highway and demonstration road of quality engineering” in Jiangxi Province. It mainly describes the construction idea, realization way, characteristics, highlights and practical experience of demonstration project of Guangji green highway construction.

In this paper, the author is taking the protection of wildlife for the purpose for researching. The authors are taking the protection of animals and plants specific measures to research in the construction management. Taking the protection of wild animals and plants along the highway in the Xinjiang desert Gobi area as a research object, conservation research was carried out, and protection suggestions and measures were put forward.

To Explore the effect of straw decompostition agents on the changes of physicochemical parameters and microbial communities in the decomposition of rice straw, 2 treatments were set up in the experiment: straw decompostition agent(JF) and no inoculation(CK) . Changes of the physicochemical parameters and microbial communities composition were measured and analyzed. The results showed that straw decompostition agent had insignificant effects on decomposition rate, pH, total organic carbon, total nitrogen and the ratio of C/N, but the content of total P increased by 8.4% and the ratio of C/P decreased by 9.1%, significantly. At the phylum level, Proteobacteria, Firmicutes, Bacteroidetes and Actinobacteria were the dominant bacteria communities, Basidiomycota, Ascomycota and Unclassified fungi were the dominant fungus communities. The abundances of Proteobacteria and Actinobacteria at 0-8 and 8-28 d in JF were higher than those in CK, respectively. Basidiomycota, Ascomycota and Unclassified fungi were the dominant fungus communities in the temperature rising, cooling off and maturity stage, and their abundances in JF were higher than those in CK. At the genus level, the dominant bacteria communities included Bacillus, Pseudoxanthomonas, Escherichia-Shigella, Cronobacter, Cellvibrio and Paenibacillus, the dominant fungus communities included Coprinopsis, Aspergillus, Wallemia, Melanocarpus and Thermomyces. The abundances of Escherichia-Shigella and Cronobacter in JF were 0.3%-4.5% and 1.3%-3.1% higher in the temperature rising stage than those in CK, respectively. The abundance of Wallemia in JF was 3.9%-4.5% higher in the temperature rising stage than that in CK. The abundances of Melanocarpus and Thermomyces in JF were 39.2% and 39.1% higher on the 8th day than those in CK, respectively. The canonical correlation analysis (CCA) showed that total nitrogen and available phosphorus were the most important environmental indicators affecting bacteria and fungus communities. To sum up, the straw decompostition agent affected the decomposing of rice straw by increasing the maturity indexes of part of the rice straw and increasing the abundances of some functional microbial communities, which provided theoretical and scientific basis for improving the utilization rate of rice straw returning to the field. [ABSTRACT FROM AUTHOR]