bluuebunny/crossref_metadata_2025_split huggingface dataset:
A new concept of river and lake regulation: “Bi Dao”
Authors: Ning Yun-Fang , Zhang Jian-Tong , Huang Jian-Hong , Long Heng-Feng , Huang Qiu-Shui 
Published: March 2020

Abstract
The aquatic environmental regulations at home and abroad is rarely considered from the perspective of water body and water bank treatments together and coordinated economic and cultural development. To improve the environmental quality of waterfront cities and activate and revitalize their vitality in waterfront areas, it is necessary to make full use of the water system and its surrounding green space, to get through the waterfront slow-moving system, and connect various natural and human elements along the waterline. Li Xi, the Secretary of Guangdong Province, China, proposed the concept of “Bi Dao”. “Bi Dao” is a comprehensive regulation concept that integrates natural elements and economic and social attributes with water as the main focus. “Bi Dao” is constantly evolving, innovating and enriching in practice and provides a useful tool for exploration and practice in China’s environmental regulation efforts. “Bi Dao” will improve the quality of cities on both sides of the river or lake and lead to industry transformations and upgrades, which will promote economic and social development and improve the level of ecological civilization.
Systematic treatment of urban river pollution
Authors: Ning Yun-Fang , Zhang Jian-Tong , Huang Jian-Hong , Long Heng-Feng , Huang Qiu-Shui 
Published: March 2020

Abstract
Urban river pollution is one of the most prominent environmental problems in Chinese cities that have been trying to prevent and control. The aim of this paper is to propose an urban river governance framework from the perspective of systematic governance. The point source pollution control is the premise of river regulation. Increased impervious surface in urban areas due to urbanization continuously increases the concentration of stormwater runoff pollutants. Many low-impact development facilities such as sunken lawn and rain gardens can also effectively reduce with non-point source pollution. Controlling the pollution source eliminates some pollutants in the river though it does not improve its own ecosystem. Since the self-purification ability of an unstable ecosystem is weak, the restoration of ecosystems is critical component of the water environment management. Urban river regulation should focus on sustainable management of river sources to meet the human needs, while ensuring the health and continuous development of river ecosystems, water ecology, water landscape and water culture.
Study on the Absorption of Nitrous Tetroxide Waste Gas by Foaming Agent
Authors: Tong Wei , Zhao Bing , Wang Ying , Wang Weiqing , Cong Rimei , Wu Yi , Huang Xiyun , Huang Dan , Hao Yizheng 
Published: March 2020

Abstract
The problem of waste gas treatment of nitrogen tetroxide(N2O4) has long been a difficult problem for researchers. This paper determines the combination liquid formula of N2O4 waste absorption system by screening absorbent, foaming agent and foaming method, and finds a new method to deal with N2O4 waste gas. In addition, the paper measures nitrate and nitrite content respectively by UV-visible spectrophotometry, and obtains the absorption rate and the nitrite emission of absorption system in order to judge the overall absorption effect. The research results show that using the new method in the actual waste gas absorption, absorption rate can reach more than 93% under the simple exposure device, while nitrite content is lower than the national surface water discharge standard, which can solve the problem of waste gas harm.
Study on the influence of Village form of famous Tourism Village on the layout of garbage Collection points-A case study of famous Tourism Village in Guilin City
Authors: Feng Bing , Liu Yalong , Liu Xiaoyu , Xie Ran , Xiang Yi 
Published: March 2020

Abstract
Based on the contradiction between the rapid development of tourism, especially rural tourism and the increasing complexity of domestic garbage in recent years, a representative tourism village in Guilin City, Guangxi Zhuang Autonomous Region, was selected to study the layout of garbage collection points. Firstly, the characteristics of domestic garbage are analysed, that is randomness, timeliness of transporting, diversity and minimization of ending. Secondly, the villages are investigated to determine the status quo of village form and garbage bin layout. Finally, the number and size of collection points are affected by the points of village form, and the line of village form influences collection points. The layout direction, the main structure of the formation of the plane graphics determines the layout of important garbage collection points into a line formed by the graphics.
Responses of Alnus nepalensis seedling under high phosphorus stress: shifts in photosynthesis and phosphorus contents across different organs
Authors: Wu Zuqing , Li Mengyang , Dao Chengjiao , Zhao Biao , Xu Yinjiao , Liu Changming , Yan Kai 
Published: March 2020

Abstract
Large phosphate ores are located in Southwest China. Mining activities have led to serious degradation facing surrounding ecosystem, which hinders regional sustainable development. Re-vegetation is considered the ideal treatment to cope with this issue. Alnus nepalensis is considered the suitable tree species for restoration across mining sites, giving its N-fixing capacity and good adaptability. However, the growth of A. nepalensis seedling seems limited in phosphate abandoned land. In order to clarify the responses (phosphorus contents distribution and photosynthesis) of A. nepalensis seedling under high soil phosphorus stress, pot experiment was conducted. The results showed that higher soil phosphorus level leads to higher phosphorus concentrations observed in all organs of seedlings. In contract, A. nepalensis seedling’s respiration rate, stomatal conductance and photosynthetic rate, all the photosynthetic parameters decreased. It found the phenomenon that phosphorus content of leaves, roots, soil and stem were negatively correlated with those photosynthetic parameters, but clear causal metabolism pathway still needs further study. Anyway, extremely high phosphorus level would inhibit the photosynthesis, and even the growth of A. nepalensis seedling, corresponding strategy is needed when we use A. nepalensis to recover phosphate abandoned land.
Research on the Eco-environmental effect of Manufacturing Transformation and Upgrading of Xijiang River Economic Belt based on Internet Background
Authors: Song Ying , Cao Yuanping 
Published: March 2020

Abstract
Manufacturing industry is the pillar in the regional development whose impact on environment has been focused. The paper, using the data of 2008-2017 of Xijiang River Economic Belt, Construct comprehensive index of environmental effect for manufacturing transformation and upgrading and discuss the effect of transformation and upgrading on eco-environment. The result shows that while the economic developing, the Economic Belt’s environment is improving. And some advice about further manufacturing development based on ecological development and internet in the end.
Research on the Impact of Environmental Regulation on Haze Pollution in China
Authors: Yang Yuanhua , Li Yingdi , Tang Dengli 
Published: March 2020

Abstract
Using spatial exploratory data analysis technology, this paper empirically analyzes the spatial evolution of haze pollution, and examines the impact of environmental regulation on haze pollution based on Spatial Durbin Model in China from 2004 to 2016. The results show that there is a significant spatial autocorrelation for haze pollution in China, and the spatial distribution forms high-haze pollution high-high(H-H) cluster regions and low-haze pollution low-low(L-L) cluster regions. The H-H cluster regions have experienced a change from the central region to the western region and then to the eastern region, and the L-L cluster regions have expanded and shifted to the east. Second, the direct effect of environmental regulation on haze pollution is negative but not significant, while the indirect effect and total effect of environmental regulation on haze pollution are significantly positive, which shows the current environmental regulation has not played a role in suppressing haze pollution. This is inconsistent with the original intention of the government to implement environmental regulation policies and there is indeed a “green paradox” in China. In addition, FDI and population size have aggravate the haze pollution in the region, and the improvement of the industrial structure is conducive to the improvement of haze pollution.
Temporal and Spatial Distribution Characteristics of Air Pollution and the influence of Energy Structure in Guangdong-Hong Kong-Macao Greater Bay Area
Authors: Tang Dengli , Lu Yinan , Cai Wenyi , Zhu Xinwei 
Published: March 2020

Abstract
Based on the panel data of 11 cities in GBA from 2010 to 2016, this paper uses spatial data analysis method to study the temporal and spatial distribution characteristics of air pollution, and the impact of energy structure on air pollution in GBA. The results show that the more serious air pollution is mainly distributed in Zhaoqing, Foshan, Jiangmen, etc. Air pollution has spatial correlation and obvious “path dependence” characteristics in spatial distribution. Secondly, the energy structure coefficient is positive, which means that the coal consumption increases 1%, the air pollution index will rise by 0.1381%. At the same time, a “U”-type relationship exists between per capita GDP and air pollution.
2008-2016 Water security status and short plate element screening in Shandong province
Authors: Li Xinying , Zhao Qiang , Gao Qian 
Published: March 2020

Abstract
In order to explore the applicability of the methods for protecting regional water resources, the water resources safety evaluation index system of Shandong Province was constructed, and the water resources safety relative closeness degree was used to characterize the water resources security situation of Shandong Province from 2008 to 2016; the matrix of water resources safety impact factors of Shandong Province was constructed. The factor analysis method is used to calculate three principal component factors, and the short board elements are identified. The paper concluded by comparing the development trend of water resources security in Shandong from the aspects of vertical (interannual) and horizontal (indicator). The results show that: (1) The water security system of Shandong Province was mildly unsafe in 2009. It was barely safe in 2015 and 2016, and the rest of the year was in an unsafe state. In 2008-2016, the state of water resources security in Shandong Province showed that the situation in the previous period was relatively tight and the later contradictions eased, but the overall security situation was still severe. (2) Factor analysis shows that the lack of water resources and high-intensity development and utilization are the main short-term factors affecting water resources security in Shandong Province.
Comparative study of soil erosion along the Middle Route of South-to-North Water Transfer Project based on RUSLE model
Authors: Fan Jian , Yu Yan , Li Zhen , Meng Wenqing , Ma Weilin 
Published: March 2020

Abstract
In order to probe the impact of the construction of the Middle Route of the South-to-North Water Transfer Project on soil erosion in its buffer area and to offer support on decision which improve the surrounding soil and water environment, this paper conducts a comparative study on soil erosion in 2010 and 2015 based on the RUSLE model. The results show that: 1) the soil erosion modulus in 2010 and 2015 are both at the level of micro-erosion;2) the effect of project on erosion becomes apparent in 200-500m buffer zone of the main canal, and the most severe buffer zone is in 200-300m; 3) with the increase of buffer distance, the soil erosion modulus in 2015 fluctuates as similarly as that does in 2010.
Analysis of spatio-temporal distribution characteristics and fog forming conditions of Zhejiang coast in recent ten years
Authors: Gao Xinxin , Yu Yun , Xu Lili , Qiu Ting , Zheng Xiaoqin 
Published: March 2020

Abstract
Based on the hydrometeorological observation data of Zhejiang coastal observation station from 2009 to 2018, the temporal and spatial distribution characteristics and fogging conditions of sea fog along the coast of Zhejiang Province were analyzed in this paper. The result shows that the average annual fog day along the coast of Zhejiang Province is 112 days according to the situation that the sea fog occurs as long as there is one station along the coast of Zhejiang Province. The fog season is from March to June and the sea fog occurs in the middle of the night and early in the morning. The spatial distribution of sea fog along the coast of Zhejiang Province is more in the middle of the two ends and the average annual fog days of each station are in the range of 19.2-82.0 days. Under the condition of fog, most of the relative humidity in Zhejiang coastal area is greater than or equal to 90%, the average temperature difference between gas and water is-0.5 - 2.1°C, and the direction of fog wind is mainly eastward. More than 93.6% of the sea fog occurs under the condition that the wind force is less than or equal to level 5. There are four main types of weather situation affecting the occurrence of sea fog in coastal areas of Zhejiang Province, including inverted trough type, low pressure sea exit type, weak cold air type and high-pressure sea entry type. When the continuous sea fog process occurs, the weather situation usually goes through the high-pressure sea entry type, the inverted trough type and the low pressure sea exit type. The wind direction will change with the variation of weather situation and the wind force will be less than or equal to 4 levels. When the wind is greater than level 5, the wind changes from west to southwest, and the sea fog tends to dissipate. Thick fog or strong fog occurs mainly in the middle of the night, early in the morning and around the evening.
Analysis of Soil Moisture Characteristics and Deficit Compensation of Forest Land in Nanxiaohegou Watershed
Authors: Zhang Ling , Song Xiaoyu , Fu Na , Li Lanjun , Zhang Zhixu , Li Huaiyou 
Published: March 2020

Abstract
Exploring the soil water characteristics of typical afforestation species Robinia pseudoacacia and Platycladus orientalis in the gully region of the Loess Plateau, and analyzing the compensation situation of soil water storage deficit before and after the rainy season, it provides reference for the selection of planting tree species in the process of water and soil conservation. The analysis results show that, the soil moisture content of different vegetations is different, and the soil moisture in different slope directions also shows differences. Soil water storage has the same change rule. Soil moisture continued to increase in the range of 0-30cm. it keeps decreasing in the range of 30-60cm, it fluctuates within 10% below 60 cm depth. DSW of robinia pseudoacacia forest was lower than that of platycladus orientalis, and CSW was higher than that of platycladus orientalis. The DSW of the shady slope is lower than the sunny slope, and the CSW is higher than the sunny slope.
Factor Influence on Energy Carbon Emissions: a Case of Upper Reaches of The Yangtze River of China
Authors: Rao Guangming , Han Xu , Zhu Yanping 
Published: March 2020

Abstract
This paper adopts STIRPAT model with ridge regression to estimate factor influence on energy carbon emissions with the case of the upper reaches of the Yangtze River of China. The result shows that seven factors have positive but different influence on energy carbon emissions, which impact coefficient of population is 5.559, and respectively is secondary industry value-added (1.054), CO2 emissions intensity (0.597), productivity (0.416), GDP per capita (0.352), urban employment (0.309) and urbanization (0.221). For improvement of factor influence on energy carbon emissions, it is urgent to promote industrial low carbon transition, encourage R&D of low carbon technologies for clean production and advocate low carbon urbanization and life.
Adsorption behavior of modified porous starch to methyl blue in aqueous solution
Authors: Zhao Zhipeng , Jiang Mengmeng , Mei Chentao , Huang Hui 
Published: March 2020

Abstract
Porous starch was prepared by replacing ice crystals in frozen starch gel with ethanol using a solvent exchange method. It was then modified by phosphoric acid and urea via solid-state reaction to produce modified porous starch. The modified starch was used to adsorb methyl blue in aqueous solution. Five adsorption kinetics and five adsorption isotherm were used to fit the experimental data, and the fitting effect was evaluated using seven error analysis methods to get the best model.
Effect of petroleum hydrocarbons on the carbon and nitrogen stable isotope composition of Nitzschia closterium
Authors: Li Na , Liu Yu , Liang Zhengyu , Liu Yuxin , Lou Yadi 
Published: March 2020

Abstract
The microalgae is an important test organism of Petroleum hydrocarbon pollution. The present study was selected the N. closterium under laboratory conditions, the acute toxicity test of 180# fuel oil CE-WAF was investigated. We found the main content of the PAHs of CE-WAF were C0-N, C2-N, C1-N and C0-P by GC-MS analysis, indicating the toxicity of PAHs could affect the growth and development of microalgae. The EA-IRMS was used to analyze the carbon and nitrogen stable isotope composition of N. closterium under the CE-WAF stress. More importantly, the value of δ13C increased with the culture time at the control group, but there was no significant difference in δ13C value with increased culture time at the high (5%, 7%, and 10%) CE-WAF concentrations. In addition, the δ15N value of microalgae was increased in the culture time at the same CE-WAF concentration. However, there was no significant difference in δ15N value with increasing CE-WAF concentration at the same culture time. This study illustrated that the toxic effects of PAHs could be detected by the δ13C value to reveal the impact on marine ecosystems, and provided basic data and related theoretical support for marine pollution detection systems.
Assessment of Heavy Metal Pollution in Soil Around a plastic metal factory in Jiaxing, China
Authors: Liu Ting-Ting , Hu Wen-Zhen , Wang Guo-Fang , Xue Jia-Ping 
Published: March 2020

Abstract
This study takes the soil around a plastic metal factory in Jiaxing as the research object, and measures the wind direction under the northwest wind in the autumn. The Hg, Cd, As, Ni in the soil samples at different horizontal distances and depths (0-30cm) The contents of seven elements of Pb, Cu and Cr were evaluated by the geoaccumulation index method, the Nemero pollution comprehensive index method and the potential ecological risk index evaluation method. The number of samples with severe pollution levels calculated by the Nemero pollution comprehensive index method accounted for 85.71% of the total. Using the potential ecological risk index evaluation method, it is concluded that the single ecological risk of Cd and Cr is very strong and above, and the samples account for 100% of the total sample. The soil accumulation index method was used to analyze the pollution of heavy metals: Cd>Hg>Ni>Cu>As, Cr>Pb. The results show that the ecological risk assessment results under the combined action of various heavy metals are not optimistic, and the potential ecological risks are extremely heavy.
Study on the contribution rate of urbanization and air-sea circulation factors to the increase of rainstorm in China
Authors: Feng Kong 
Published: March 2020

AbstractMore and more attention has been paid to the serious disasters caused by extreme precipitation events. The relationship between climate change and extreme precipitation has become the hottest science foreland issue. Based on the study of daily rainstorm observation records of 659 meteorological stations in China from 1951 to 2010, this paper shows that rapid urbanization may trigger a significant increase in large-scale rainstorm in China. The main conclusions are as follows: (1) In terms of time, China’s rainstorm rainfall, rainy days and rainfall intensity increased significantly, reaching 68.71%, 60.15% and 11.52% respectively. In space, the torrential rains in China gradually migrated from the southeastern coast to the spatial transition process of gradient expansion in Central, Southwest, North, and Northeast China. (2) The variance explanations of the rapid urbanization factors to the rainstorm rainfall, rainy days and rainfall intensity in China are 61.54%, 58.48% and 65.54% respectively, while the variance explanations of the climatic factors are only 24.30%, 26.23% and 21.92% respectively. Rapid urbanization factors are likely to trigger a significant increase in rainstorm rainfall in China. (3) The panel data of China’s county-level total population and the annual average of visibility days are significantly spatially correlated with rainstorm rainfall, rainy days and rainfall intensity. The correlation coefficient gradually increases with age, further indicating that rapid urbanization has triggered a significant increase in large-scale inter-decadal rainstorm in China.
Double exponential decay empirical model for indoor building materials TVOC emissions
Authors: Zhang Yan , Liu Yang , Wu Yongfa , Niu Yuru , Jiang Jinxia , Guan Hongyan 
Published: March 2020

Abstract
The double exponential decay model is proposed to simulate the total volatile organic compound emissions of indoor building materials. The simulation results are in better agreement with the experimental data than the classical model, and the release characteristic of volatile organic compounds is more accurately described.
Water and soil conservation technology of steep slope based on artificial vegetation restoration
Authors: Wang J , Liu G Q , Ma D L , Yang D F 
Published: March 2020

Abstract
The mountain steep slope is in serious soil erosion owing to the rain wash, and is prone to geological disasters. Restoring vegetation on steep slopes can effectively maintain water and soil, avoid disasters and protect the environment. The key point of restoring vegetation is to solve the difficulties of soil conservation on steep slopes and satisfy the basic needs of vegetation growth. Based on the design and discussion of vegetation species selection, growth hole design, substrate soil ratio and water and soil conservation facilities on steep slopes, a water and soil conservation technology based on artificial vegetation restoration is proposed. The results show that the soil with a certain thickness is successfully maintained on the steep slope and the artificial vegetation is restored.
Theoretical Study on Vegetation Restoration Ecology of Steep Slope
Authors: Chen Changbing , Ma Dongliang , Liu Guoquan , Yang Dafeng , Luo Wen 
Published: March 2020

Abstract
This paper applies the theory of ecology to discuss the effect of vegetation restoration on steep split slope by the vegetation form, the mechanical reinforcement of vegetation roots, the effect of vegetation root angle on soil stability of steep split slop, the effect of vegetation on erosion resisrance of steep split slope. The favorable condition of vegetation restoration for steep split slope is explained in principle, and it provides theoretical reference for vegetation restoration of steep split slope.