Safeguarding ecological security is one of China's important development strategies. Identifying patterns (ESPs) an effective way to collaboratively develop and environmental in different regions. Currently, studies on the construction regional ESPs mainly focus innovation ecosystem service functions, ignoring differences sensitivities environments a large scale. In this paper, taking Yellow River Basin (YRB) as example, six functions were selected identify sources (ESs), sensitivity weights...

Due to eutrophication, removing phosphate ions from wastewater has received a lot of attention. In order improve the phosphorus adsorption capacity material, this study used biomass pyrolysis create series biochars modified with metal chloride ions. accordance tests, lanthanum-loaded biochar (LCBC) had significant approximately 666.67 mg/g, which was 30 times greater than that pristine biochar. Adsorption kinetic analysis revealed LCBC's process could be fitted pseudo-secondary equation,...

Frozen fractured rock mass is often encountered during the implementation of geotechnical engineering in cold regions. The tensile strength parameters frozen play an important role construction slopes involving failure. In order to study characteristics a region, original specimens were mined and processed Yulong Copper Mine, artificial, marble made. effects different ice-filled crack angles, lengths, widths on force–displacement curve studied by laboratory Brazilian splitting experiments...

Based on a noncompetitive input-output analysis, this paper estimates the embodied carbon emissions in Sino-Korean trade from 2000 to 2014 new value-added perspective. In addition, using structural decomposition we decompose factors driving and analyze responsibilities that China Korea should each bear under "shared responsibility." Our results show traditional statistical method overestimates true level of overestimation rate is about 60%. Moreover, input technology structure effect export...

A novel numerical experimental method is developed herein to study frost-heaving cracking in fractured rock masses by reproducing the physical process. The failure mode of a preexisting closed and water-saturated single-flaw mass during process affected inclination angle, flaw width, crack length, cooling rate. Additionally, regression model for predicting secondary formation propagation established combining multiple stepwise regressions. Overall, results indicate that with various angles,...

The propagation mechanism of explosion stress waves in frozen rock mass is the main factor affecting blasting efficiency and safety construction strip mines alpine cold regions. In order to study wave crack extension process with ice-filled cracks, RFPA2D adopted simulate influence geometric parameters cracks (ice-filled thickness d, normal distance R from hole crack, angle α), loading intensity rate on effect damage range. results show: attenuation trend decreases gradually an increase...

Abstract In order to study the mechanical properties of slag micropowder cured red layer filler and its microscopic action mechanism, with different dosages were investigated by using test methods such as no lateral limit straight shear, improvement mechanism analysed X-ray diffraction, infrared spectroscopy, laser particle size, nuclear magnetic resonance, thermogravimetric analysis, scanning electron microscopy. The experimental results show that addition powder can significantly improve...

Net primary productivity (NPP) is an important parameter reflecting vegetation growth, and water one of the necessary factors for growth. Investigating mutual influence between NPP significant ensuring stable development ecological environment. This study focuses on Yangtze River Basin (YRB) as research area, based medium-resolution imaging spectrometer (MODIS) data, climate gravity recovery experiment (GRACE) spatiotemporal evolution characteristics terrestrial storage (TWS) in YRB from...

The synergetic activation of PDS by biochar activator and UV-irradiation with as a responsive photocatalyst the functionalization co-doped Zn S endowed SC-Zn significantly enhanced catalytic performance.

Classrooms based on physical education deep learning should provide individuals with more free imagination space and autonomous exploration boundaries. Physical be linked to the core competencies of distinguished from other disciplines. This research through a dialectical paradigm, analyze structure classroom: high-level cognition, high challenge topics, engagement state, interesting situations. propose strategies for transformation classrooms: subject connections promote understanding; Pay...

The division of landscape character areas is an effective way to plan the corridor river corridors with rich natural and human resources. Based on method advanced experience assessment in Europe, this paper summarizes steps classification evaluation index system for arid region Northwest China. Taking Zhangye section Heihe River Basin as example, area was divided into 11 watershed scale. At same time, mapping description were carried out.

To solve the problem on poor performance of crop growth model in simulating process under water stress, three schemes including improving evapotranspiration parameterization scheme with Penman-Monteith method, building dynamic coefficient (Kc) and considering simultaneously two above-mentioned solutions which are respectively named as PM, CC PMCC used to improve WOFOST model. Their effects maize drought stress evaluated based experiments different sowing dates 20 April, 30 April 10 May...

To solve the environmental problems caused by organic pollutants, in this work, corn stalk biochar (BC) was prepared high-temperature calcination, and a series of titanium dioxide/biochar composites (TiO2/BC) were ultrasonic assisted vacuum impregnation. Compared with pure TiO2, TiO2/BC(650) composite had good crystal structure, larger specific surface area. Because improvement its physical chemical properties, band edge absorption have certain red-shifted, it light properties. Furthermore,...

Abstract Different from previous studies which focused on provincial governments as the subjects of ecological compensation, we study city-based compensation mechanism in Chinese river basins. The value water ecosystem service equivalents calculated based remote sensing data is used to judge whether a city an protector or destroyer. results showed that time changed, different cities changed differently, and mass, number protectors was increasing agglomeration effect space. Cities located...