Spatiotemporal variability of groundwater chemistry, source identification and health risks in the southern Chinese Loess Plateau by Zijun Li, Qingchun Yang, Chuan Xie, Hongyun Ma, Bin Wu, Yanli Wang

“…In this study, 146 water samples were investigated to identify the spatiotemporal variability in groundwater chemistry, pollution sources and nitrate health risks in two interconnected river basins of a typical loess region. The results showed that except for bicarbonate, spatiotemporal variability of hydrochemical components in Malian River Basin (ML) was generally greater than that in Upper Jinghe River basin (JH-U) due to the hydrogeological conditions, and the hydrochemical facies in two river basins transformed from SO4·Cl and Cl·SO4 types to HCO3 and HCO3·SO4 types. …”
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Long time-series and high-frequency ecological evaluation of Henan section of the Yellow River by Jianzhong Guo, Daozhu Xu, Jian Xu, Ruoxin Zhu, Ning Li

“…Clarifying ecological status and dynamic changes is crucial to ecological conservation and high-quality development of the Yellow River basin. However, due to the limitations of the existing model's solution mechanism, current ecological environment assessment models have poor automation capabilities. …”
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Evaluation of urban water cycle health status based on DPSIRM framework and AHP-FCE-Cloud model by Jiageng Hu, Fuqiang Wang, Peiheng Liu, Subing Lü, Cheng Lü, Furong Yu

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Review on the Method of Compensation Benefit Allocation for Cascade Hydropower Stations by LI Yinghai, WANG Li, LI Qingqing, XIA Qingqing

“…Under the model of cascade rolling development,there are significant compensation benefits in the joint operation of cascade hydropower stations.Scientific and reasonable allocation of compensation benefits becomes the key point to realize joint optimal operation of cascade hydropower stations.This paper first expounds the present situation and existing risk in cascade hydropower station operation management,specifies the compensation benefit types and principles for compensation benefit allocation,summarizes and analyzes the main methods and application examples of compensation benefit allocation of cascade hydropower stations,discusses the applicable conditions and advantages and disadvantages of various methods,analyzes the shortcomings in application examples through existing research,finally proposes the future research direction for allocation of compensation benefits of cascade hydropower stations,so as to provide the reference for sustainable development and utilization of river basin water resources.…”
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Ecological Flow of Intensively Developed and Utilized Rivers in Yunnan Province Based on Improved Tennant Method by LI Jiao, LI Xuehui

“…The ecological flow of rivers is the basic element for maintaining a river ecosystem and an important indicator for controlling the intensity of water resource development and utilization.Studying ecological flow is a significant part of endorsing river health.According to the characteristics of the intensively developed and utilized rivers in Yunnan Province,this paper takes the Niulan River system in the Jinsha River Basin as a representative to carry out ecological flow research.It proposes an improved Tennant method according to the division of the river's “water use period”,“flood control period”,and “water storage period” and compares it with three common hydrological methods.According to the comparison,the proposed improved Tennant method has obvious advantages in meeting the water use characteristics of rivers in development and utilization,the variation law of natural rivers' abundance and dryness throughout the year,the ecological environment conditions in the river course,and the ecological flow satisfaction rate in dry seasons.…”
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Análise morfométrica das sub-bacias de 3ª ordem da bacia hidrográfica do Rio do Peixe, Minas Gerais by Isabela Belmira Santos Giarola, Cinthia Maria Amaral, Daiane Evangelista de Oliveira

“…The watershed of the Peixe river, located in the southeast of the state of Minas Gerais, Brazil, presents in its territory morphometric specificities when compared to surrounding areas and, in order to investigate these morphometric characteristics, this work had the objective of understanding and explaining, methodologically based In geomorphological and morphometric interpretations, the heterogeneity of the modeling of the third-order sub-basins that make up the southern portion of the Peixe river basin. For the spatialization of the results of the calculations of the morphometric parameters, thematic maps were generated that aided in the comparative interpretations. …”
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The Application of Seepage Flow Prediction in Nuer Dam Based on the Grey Self-Memory Model by Ai-Feng Wang, Xiu-Tao Yang, Da-Hai Guo

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The Ivory Saltcellars: A contribution to the history of Islamic expansion in Greater Senegambia during the 16th and 17th centuries by Thiago H. Mota

“…The analysis concerns the Greater Senegambia, a region comprised of the Senegal River basin in the north, the Futa Jalon plateau in the east, and northern Sierra Leone in the south. …”
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Suscetibilidade a escorregamentos rasos a partir de parâmetros morfométricos e dos modelos SHALSTAB e do Valor Informativo by José Eduardo Bonini, Carlos Valdir de Meneses Bateira, Vivian Cristina Dias, Tiago Damas Martins, Bianca Carvalho Vieira

“…The study area was the Gurutuba river basin, in the municipality of Itaoca (São Paulo), selected due to massive quantities of shallow landslides triggered after an extreme rainfall event in 2014. …”
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Morphological abnormalities in some dominant fish species from the polluted site of the Pozim River (Udmurt Republic, Russia) by A.K. Mineev

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Design and Implementation of One Map of Watershed Water Conservancy by GAN Haoxin, WANG Zhilong

“…Given the needs of watershed water conservancy management and the requirements of intelligent water conservancy construction,this study adopts the construction and operation mode of “joint construction,shared use,business update and intensive maintenance”,to build One Map of watershed water conservancy that is “dynamic,vivid,three-dimensional,intelligent,safe and reliable” based on the national water conservancy map.Through technological innovation in the fields of data,model,platform and application,this study aims to guide the construction practice of One Map of Pearl River water conservancy,so as to build One Map big data center,One Map service cloud platform,One Map intelligent application,One Map normative system,etc.for Pearl River Basin.This study supports multi-dimensional information query and analysis,rapid construction of special applications,construction of professional systems based on unified maps,and full aggregation display of business achievements,promoting the construction of digital twin watershed.…”
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Phylogeography and population structure of the global, wide host-range hybrid pathogen Phytophthora × cambivora by Martin S. Mullett, Kris Van Poucke, Annelies Haegeman, Fran Focquet, Nicholas C. Cauldron, Brian J. Knaus, Marilia Horta Jung, Koji Kageyama, Ayaka Hieno, Hayato Masuja, Seiji Uematsu, Joan F. Webber, Clive M. Brasier, József Bakonyi, Kurt Heungens, Niklaus J. Grünwald, Thomas Jung

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Water conservation assessment and its influencing factors identification using the InVEST and random forest model in the northern piedmont of the Qinling Mountains by Song He, Hui Qian, Yuan Liu, Xiaoguang Zhao, Fengmei Su, Huan Ma, Zilong Guan, Tao Zhang

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Overlooked discrepancies in protocols undermine coastal restoration practices in China by Tian Xie, Zhonghua Ning, Baoshan Cui, Qiang He, Cong Chen, Zhenchang Zhu, Yujia Zhai, Guogui Chen, Qing Wang, Shanze Li, Junhong Bai, Christopher B. Craft, Tjeerd J. Bouma, Zhifeng Yang

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Vertical and spatial differences in ozone formation sensitivities under different ozone pollution levels in eastern Chinese cities by Zhuang Wang, Hao Zhang, Chune Shi, Xianguang Ji, Yizhi Zhu, Congzi Xia, Xiaoyun Sun, Meng Zhang, Xinfeng Lin, Shaowei Yan, Yuan Zhou, Chengzhi Xing, Yujia Chen, Cheng Liu

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Des SfN avant l’heure : ce que nous en disent les opérations de mitigation urbaine en zone inondable. Le cas des villes ligériennes by Marie Fournier, Mathilde Gralepois

“…To put it another way, these projects initiated by the French local authorities of the Loire River basin since the beginning of the 2000s have in fact fully integrated NBS principles, to a greater or lesser extent, without explicitly using the concept. …”
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A new tree species of Compsoneura (Myristicaceae) from the Andean forests on the Eastern Cordillera Range, Colombia by Boris Villanueva-Tamayo, Carlos Paz-López, William Ariza-Cortés

“…., located in the mountainous area of the Magdalena River Basin, Department of Boyacá, Colombia. Compsoneura crassitepala closely resembles Compsoneura lapidiflora in having a thick perianth in pistillate flowers. …”
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Analysis and Recheck of Reinforcement Scheme of Dikes in a Polder by WU Juan, ZHANG Ming, LI Yansong

“…The dike reinforcement project in a polder has a total length of 8 873 m.There are some local problems along the dikes,such as the insufficient crest elevation,thin dikes,insufficient stability of dike slopes,leakage of dikes,and damaged pavement on the crest,which affect the flood control safety of dikes and cannot meet the normal operation requirements.Therefore,on the basis of analyzing the present situation and problems,targeted research on dike reinforcement design is carried out,and the design principles of dike reinforcement are put forward.Moreover,we implement the design contents,including the recheck of crest elevation,reinforcement design of dike sections,anti-sliding stability recheck of dike slopes,anti-seepage and reinforcement design of dikes,and effect evaluation.The reinforcement design scheme fully considers the actual local situation,which meets the overall flood control requirements of the river basin and is compatible with the local existing flood control projects for operation.The proposed dike reinforcement design scheme has certain universality and can be used as a reference for dike reinforcement in plain areas.…”
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Integração regional, a região transfronteiriça da bacia do Rio da Prata e os projetos de infraestruturas de conexão by Aldomar A. Rückert, Circe I. Dietz

“…The article discusses the process of south-american integration in the specific case of Mercosur and the cross-border region of the La Plata River Basin from two main questions on. Is a cross-border macroregion effectively in construction in the Mercosur geoeconomical core? …”
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Analysis for Hydrological Regime of the Lower Reaches of Geheyan Reservoir Based on IHA-RVA Method by TU Yulyu, LI Yinghai, GUO Jiali, NIE Panpan

“…In order to evaluate quantitatively the change of ecological and hydrological regime of the lower reaches of Geheyan reservoir,based on the daily flow data of Changyang hydrological station from 1951 to 2010,this paper analyzes the flow trend with the non-parameter Mann-Kendall trend test,and the abrupt change points by Mann-Kendall test,moving t test and ordered clustering,and then comprehensively evaluates the ecological and hydrological changes of Changyang section at the lower reaches of the Geheyan reservoir with IHA-RVA (indicators of hydrologic alteration and range of variability approach) and hydrological alteration degree evaluation.The results show that:The annual average runoff of Changyang station shows unobvious downward trend.In 2000,there was an abrupt change.In overall,the hydrological regime is featured with 58% of moderate change,and indicators with the most obvious change are the base flow index,time of annual minimum flow,duration of low flow pulse and number of reversals,which can provide reference for water ecological protection of Qingjiang River Basin.…”
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