Temporal and Spatial Variation of Potential Evaporation and Its Influencing Factors in Pearl River Basin from 1980 to 2019 by ZUO Daxing, ZANG Chuanfu, WANG Lina

“…Evaporation is an important link in the water cycle,and in-depth studies on the influence of various meteorological factors on evaporation changes are of great significance for climate change,ecological restoration,and utilization of water resources.In this study,the Penman-Monteith model modified by the Food and Agriculture Organization of the United Nations (FAO) is used to calculate the potential evaporation (ET₀) in the Pearl River Basin from 1980 to 2019.The Mann-Kendall non-parametric test method and inverse distance weighting method are used to analyze the spatial and temporal distribution characteristics of the ET₀,and the principal component analysis method is used to analyze the influencing factors.The results show that:① The average ET₀ of the Pearl River Basin is 1 145.8 mm,and the growth rate is 1.37mm/a,which shows an increasing trend.In terms of four seasons,the growth rate increases in spring (0.56 mm/a),autumn (0.4 mm/a),and winter (0.44 mm/a) but decreases in summer (-0.03 mm/a).② In terms of spatial distribution,the annual average ET₀ of the Pearl River Basin is high in the east,west,and south but low in the middle andnorth.The distribution of ET₀in summer,autumn,and winter is similar.However,the distribution of ET₀ in spring is opposite to that in summer,autumn,and winter.③ Temperature,average water vapor pressure,and altitude are the leading factors of ET₀ changes.Factors such as temperature,average water vapor pressure,sunshine duration,and wind speed make positive contributions to ET₀,while altitude,latitude,and relative humidity make negative contributions to ET₀ changes.…”
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Valoriser les produits du palmier doum pour gérer durablement le système agroforestier d’une vallée sahélienne du Niger et éviter sa désertification by Régis Peltier, Claudine Serre Duhem, Aboubacar Ichaou

“…A small-sized palm-tree, the doum, has proved to have a significant economic, social and ecological value.The wood of its stem, mechanically resistant and little damaged by termites, is used as timber. …”
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Analysis of Located Problems in Isfahan City-Region by Using of Social Network Analysis by Daryoush Moradi Chadegani, Masoud Ghasemi, Niloofar Rastghalam

“…Based on the findings of the analysis from this network, the problems of "Air pollution caused by the exhausted bus", "the occurrence of environmental problems caused by the destruction of the ecological capacity of West of Isfahan" and "shortage of fire fighting equipment in neighboring cities of Isfahan" are the most important of the city-region. …”
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Evaluation of Rheological Parameters of Slag-Based Paste Backfill with Superplasticizer by Zhonghui Zhang, Yuanhui Li, Lei Ren, Zhenbang Guo, Haiqiang Jiang, Na Liu

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Unmasking the complexities of healthcare access in low-resource settings: a health systems approach to obstetric and under-5 healthcare in rural settings of Eastern Uganda by Rornald Muhumuza Kananura

“…However, the interplay of multiple factors within an ecological system affects the effectiveness of the health system in reaching those in need. …”
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Analysis of Variation Characteristics of the Annual Maximum Flood Flow of Main Streams in Guangdong Province by LIANG Yuanyuan

“…In order to understand the variation characteristics of the annual maximum flood flow at the main hydrological stations in Guangdong province and reduce the production,living,and ecological environment problems caused by floods,the annual maximum flood flow series from 1977 to 2014 at seven hydrological stations in Guangdong province,namely,Sanshui Station,Makou Station,Gaoyao Station,Shijiao Station,Boluo Station,Huazhou Station,and Chaoan Station,are studied.MK test and Pettitt test are used to carry out study or wavelet analysis on the characteristics of the trend,variability,and cycle changes of the annual maximum flood flow at typical stations in the main streams of Guangdong province.The results show that:① the annual maximum flood flow at Boluo Station and Chaoan Station decreases slightly,while that at the other five stations increases,with that at Shijiao Station and Sanshui Station rising significantly.② Four of the seven stations have variability,and they are Gaoyao Station (in 1991 and 1992),Shijiao Station (in 1992,2011,and 2012),Makou Station (in 1993),and Sanshui Station (in 1993),and the variability occurs more than once at Gaoyao and Shijiao stations.In terms of spatial and temporal distribution,the four stations with variability mostly belong to the Xijiang and Beijiang river systems in the 1980s,1990s,and the 21st century.③ Sanshui Station has two main cycles of 2~10 a and 20~30 a,and Makou Station has cycles of 2~9 a and 9~27 a.Gaoyao Station experiences a cycle of 4~10 a and 10~24 a,and Shijiao Station owns a cycle of 2~12 a and 12~20 a.Boluo Station has a cycle of 5~12 a and 12~24 a.In addition,Huazhou Station experiences three cycles of 3~7 a,7~18 a,and 18~26 a,and Chaoan Station experiences cycles of 3~10 a,10~14 a,and 14~23 a,respectively.…”
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Quantitative Attribution of Runoff and Sediment Changes in the East River Basin and Impact on Erosion and Siltation of River Channel by LI Huadong, ZENG Jiali, PAN Yifei, ZHANG Li, LAI Zhigang

“…Under the disturbance of global warming and intensive human activities,runoff and sediment in the river basin have changed significantly,thus causing enormous ecological and environmental pressure in rivers,estuaries and coastal waters.Taking East River basin as the research object,this paper analyzes the temporal characteristics of runoff and sediment by M-K test and Pettitt test,quantitatively separates the impact of climate change and human activities on runoff and sediment in the river basin by the double mass curve method and modified SWAT model,and evaluates its effect on erosion and siltation of downstream river channel.Results show that:①SWAT model was suitable for the daily and monthly runoff and sediment simulations in the East River basin,with poor simulation for runoff and sediment with daily average discharges higher than 1 500 m³/s;②The change point of runoff and sediment was 1973 and 1988 respectively.Therefore,the baseline period for runoff was 1967—1973 and sediment was 1967—1988,while impact period was 2009—2016;③The impact of human activities on water and sediment changes in the basin is significant.Contribution of climate change and human activities for runoff in 2009—2016 was about 57% and 43% respectively.Climate change and population growth were the main contribution factors for annual runoff reduction.While human activities,especially dam construction,contributed over 90% of sediment.Population growth,soil and water conservation project,and dam construction in basin were the major factors for annual sediment reduction;④Affected by sand mining in river channel,after the baseline period,the impact of human activities,especially dam construction on the middle and lower channel was firstly decreased and then increased.During the impact period,the contribution of dam construction to the erosion and siltation of middle and lower river channel was 25.8%,which was not the main factor for the evolution of the middle and lower river channel.…”
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Joint processing of V-bearing steelmaking slag and V-bearing black shale for vanadium and iron separation by Wu L.-S., Dai C., Yan B.-J., Wang H.-C., Qi C.-J.

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Immobilization of fluorides from spent carbon cathode in a copper smelting slag by Li L., Wu G.-D., Tian F.-G.

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Analysis and Evaluation of Seawater Quality in the Northwest of Hainan by HUANG Xia, ZHENG Ruixi

“…The state of seawater quality has a significant impact on the ecological environment of coastal waters. To assess the current water quality and eutrophication level of the inshore waters in northwestern Hainan, based on the monitoring results of 23 water quality monitoring stations, the single factor standard index method and the water environment comprehensive index method were used to analyze and evaluate the water quality status of this sea area. …”
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The Synergistic Effect of Nitrogen Dopant and Calcination Temperature on the Visible-Light-Induced Photoactivity of N-Doped TiO2 by Yao-Tung Lin, Chih-Huang Weng, Hui-Jan Hsu, Yu-Hao Lin, Ching-Chang Shiesh

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Economic Valuation of Ecosystem Services and Its Association with Socioeconomic Factors in the Wof-Washa Natural State Forest, North Shewa Zone, Ethiopia by Abere Wondimu Kassie, Admasu Moges, Tilahun Alelign, Gojam Bayeh

“…This suggests that despite degradation and reduction in size due to human pressures, the WWNSF remains a significant source of socioeconomic and ecological benefits, supporting local livelihoods and biodiversity. …”
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Complex adaptive systems science in the era of global sustainability crisis by Li An, B.L. Turner, II, Jianguo Liu, Volker Grimm, Qi Zhang, Zhangyang Wang, Ruihong Huang

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Effects of Water Deficit on Growth, Biomass Allocation and Photosynthesis of <i>A. senegal</i> Seedlings from Nguru and Gujba Provinces of Yobe State, North Eastern Nigeria by A.U. Jibo, M.G. Barker

“…It was concluded that A. senegal is capable of physiological adjustment in response to soil moisture as a form of ecological adaptation. Keywords: biomass allocation, provenances, relative water content, stomata conductance. …”
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Navigating the energy transition: Interplay of geopolitics, economic complexity, and environmental governance in OECD countries by Linhui Wu, Saddam Hussain

“…This work establishes that economic diversification and good ecological policies enable energy transition. The results are also validated by a panel Granger causality test that shows that environmental governance and economic complexity can improve the environment for accepting clean energy and its financial health. …”
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Analysis of the Hydrological Regime in Small Basins within the Three Gorges Reservoir Area During the Impoundment Period by YIN Siwei, HU Huiling, WANG Yuefeng, LEI Chaogui

“…Hydrological regime is an important problem brought about by the Three Gorges Project and directly influences the development and utilization of water resources and ecological sustainable development in the Three Gorges Reservoir Area.Existing studies mainly focus on the influence of water storage on the main stream of the Yangtze River,with little attention to the runoff variations in small basins of the reservoir area.Based on the daily hydrological data of three typical small basins (Daning River,Pengxi River,and Modaoxi River) in this area from 2003 to 2017,by adopting the methods of trend analysis,runoff concentration degree, and runoff concentration period,the multi-time scale change characteristics of runoff are identified from the aspects of runoff and dispersion degree.Meanwhile,the runoff characteristics before and after 175 m water storage (2003—2008,2009—2017) are revealed,and the influencing factors of runoff variations are discussed.The results are as follows.① The average annual runoff of the Daning River Basin and Pengxi River Basin shows a downward trend,but there are no obvious variations in the Modaoxi River Basin.The monthly average runoff in the three basins varies greatly.The runoff of the Daning River Basin and Pengxi River Basin has a significant decrease in the flood season (July),while that of the Modaoxi River Basin has significant increases in the non-flood season (February),and the extreme value of runoff mainly shows a non-significant downward trend.② The runoff concentration degree and runoff concentration period of each basin show a non-significant decrease or increase respectively.③ After water storage,the runoff concentration period of each basin obviously lags behind the precipitation,the annual runoff distribution tended to be uniform,and the precipitation-runoff correlation decreases.The correlation coefficient of monthly average runoff decreases about 2%~6%,while that of annual extreme value decreases about 3%~12%.The research results can provide a scientific basis for hydrological and water resources management in small basins in the Three Gorges Reservoir Area.…”
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High genomic connectivity within Anatoma at hydrothermal vents along the Central and Southeast Indian Ridge by Katharina Kniesz, Leon Hoffman, Pedro Martínez Arbizu, Terue C. Kihara

“…Furthermore, we highlight that the inferred molecular and ecological patterns provide valuable insights into hydrothermal vent ecosystems, which are crucial for the successful conservation of these ecosystems.…”
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ENERGY ISSUES AS THE TRIGGER OF FORMATION OF AN INTERNATIONAL REGIME OF THE CASPIAN SEA by I. S. Rozhkov

“…The main conclusion of the author is that debates, launched by the Caspian Littoral States on the energy issues in the format of the Special Working Group at the level of Deputy Foreign Ministers, have gradually transformed to the multilateral mechanism for interaction of regional actors and become a trigger for debates on the other issues of the Caspian agenda such as economic, ecological, military, security, transport, tourist cooperation, etc. …”
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Variations in Stable Carbon Isotope Composition and Leaf Traits of Picea schrenkiana var. tianschanica along an Altitude Gradient in Tianshan Mountains, Northwest China by Huiwen Zhang, Jianying Ma, Wei Sun, Fahu Chen

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Somatic embryogenesis in Larix: the state of art and perspectives by V. N. Shmakov, Yu. M. Konstantinov

“…Larch is considered as one of the main conifer candidates for large-scale reforestation, not only due to the vastness of its habitat, but also due to the unique quality of its wood, rapid growth and high ecological plasticity. However, the vast majority of larch species are characterized by uneven yields and extremely low seed quality. …”
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