Distribution of calcium powder factories in Jialing River, Shaanxi

Nationalscale distribution and its influence factors of calcium

In 2010 (during the GCB sampling period: 2008–2012), acid rain was mainly distributed in areas south of the Yangtze River and east of the Qinghai Tibet Plateau, including most areas of 2022年7月1日  In this study, we quantitatively assessed the degree of hydrological variability of the Jialing River and the contribution of climate alteration and human activities to hydrological Hydrologic regime alteration and influence factors in the Jialing 2011年7月14日  The critical source areas occurred to DTN and DTP pollution were mainly centralized in the downstream of the middle and lower reaches of Qujiang, the lower reaches Simulation of spatial and temporal distribution on dissolved non 2021年7月7日  Runoff and sediment discharge have displayed great reductions due to climate change and enhanced various human activities during recent decades in the Jialing River, Contributions of climate change and human activities to runoff

Hydrological Processes Hydrology Journal Wiley Online Library

This study is undertaken in the Xihanshui catchment, which is known for its high sedimentladen in the Jialing River of the Yangtze River basin, southern China, to evaluate the change 2020年9月29日  Shen et al found that in the upstream sections of the Jialing River (Shanxi, Feng County), Cd was assessed to be the most serious pollutant in soils near a Pb–Zn smelter Spatial distribution, fractions and risk assessment of five heavy A total of 3382 top samples (TS) were collected at depths of 0–25 cm and 3380 deep samples (DS) at depths >100 cm The median (background) values of Ca in the TS and DS were Nationalscale distribution and its influence factors of calcium Abstract In this study, 30 sediment samples were collected from the lower reaches of the Shichuanhe River in Xi’an, Shaanxi Province, China, to test the distribution of heavy metal Distribution, risk evaluation, and source analysis of the heavy

Hydrologic regime alteration and influence factors in the Jialing

In this study, we quantitatively assessed the degree of hydrological variability of the Jialing River and the contribution of climate alteration and human activities to hydrological alterations2015年11月6日  Based on the assessment, for the Jialing River basin, climatic and hydrological droughts have the increasing tendency during recent several decades, and the increasing Changes and Relationships of Climatic and Hydrological Droughts Jialing River, the main influencing factors of the pollution of the river are determined The research results can provide a certain basis for the water environment treatment of the Nanchong section of the Jialing River basin 2 Materials and methods 21 Study area The Jialing River is the main tributary of the upper reach of the Yangtze RiverTemporal variation trend and influencing factors of water quality in 2015年11月6日  The coming water of Jialing River has an important influence on the situation in water and sediment of the Three Gorges Region In recent ten years, the runoff of Jialing River basin decreased year by year, and the floods and droughts frequently occurred alternately, especially the agricultural production was under the serious threat of droughtsChanges and Relationships of Climatic and Hydrological Droughts

Multiobjective optimal operation of reservoir group in Jialing River

2021年3月11日  This paper elaborated the solution mechanism of the standard DREAM algorithm, and the algorithm was applied to the optimal operation model of the reservoir group in Jialing River2021年9月15日  Spatial distribution of relative proportions of fluorescent components in the Nanchong reach of Jialing River in December 2019 The gray column, diagramfilled column, and black column are C1 Effects of land use and nutrients on the characteristics of dissolved The Jialing River is one of the tributaries of the Yangtze River with the most extensive drainage area of approximately 160,000 km2 It flows about 1345 km through Shaanxi, Gansu, Sichuan Province, and eventually joins the Yangtze River in Chongqing Municipality The geographical range of Jialing River basin is 29°18’N–34°33’N andContributions of climate change and human activities to runoff 2023年7月21日  Sichuan taimen (Hucho bleekeri) is a national highly protected wild animal that faces significant impacts from habitat degradation and loss To study the habitat selection by H bleekeri, data on the Taibai River and the distribution of juvenile H bleekeri were recorded seasonally between February 2017 and January 2018, and habitat selection was assessed Correlations between Environmental Factors and the Distribution

Spatiotemporal distribution of rainfall erosivity in the Yanhe River

2016年2月11日  Rainfall erosivity is considered as one of the most important factors in the universal soil loss equation (USLE) or its revised form (RUSLE); it can directly reflect the potential of soil erosion caused by rainfall In this study, the simple algorithms of rainfall erosivity including the Wischmeier model and the halfmonth model are selected and used to estimate rainfall 2020年9月29日  Jialing River is one of the largest tributaries of the Yangtze River and the tributary with the most extensive drainage area among all the tributaries In recent years, it has suffered severe heavy metal pollution To study the spatial distribution, sediment fractions, sources and risks posed by Cd, Hg, Cu, Pb and Zn downstream of the Jialing River, 10 Spatial distribution, fractions and risk assessment of five heavy The Jialing in Chongqing The source of the Jialing, in name, is in the Jialin, which means "the tomb of Jia (嘉陵)" in Chinese Jia (赵代王嘉) was the last king of State Zhao (), who was kidnapped to State Qin (now called Tianshui, Gansu Province, 甘肃省 天水市) after Qin defeated Zhao [7]The river briefly flows through Gansu before reentering Shaanxi and then crossing Jialing River Wikipedia2022年2月1日  Calcium is the fifth most abundant element by mass in Earth's crust (Cameron, 1990)As an essential nutrient for plants, Ca is used in the formation of wood, maintenance of cell walls, and the primary structure of plant issues (Hepler, 2005)Calcium also plays an important role in the building of bones and teeth and for the regulation of certain body processes in Nationalscale distribution and its influence factors of calcium

Simulation of spatial and temporal distribution on dissolved non

2011年7月14日  Jialing River, which covers a basin area of 160,000 km2 and a length of 1,280 km, is the largest tributary of the catchment area in Three Gorges Reservoir Area, China In recent years, water quality in the reservoir area section of Jialing River has been degraded due to land use and the rural residential area induced by nonpoint source pollution Therefore, the 2024年7月10日  Landuse change is the main driver of carbon storage change in terrestrial ecosystems Currently, domestic and international studies mainly focus on the impact of carbon storage changes on climate Assessing landuse changes and carbon storage: a case study of 2022年4月13日  Nonpoint source pollution (NPSP) from human production and life activities causes severe destruction in river basin environments In this study, three types of sediment samples (A, NPSP tributary samples; B, nonNPSP mainstream samples; C, NPSP mainstream samples) were collected at the estuary of the NPSP tributaries of the Jialing River High Nonpoint Source Pollution (NPSP) Induces Structural and2021年12月29日  Figure 7 and Table 5 show the distribution of land use in the Jialing River basin in different 229 periods from 1980 t o 2018 Accordin g to the information in the table, it can be seen that Hydrologic regime alteration and influence factors in the Jialing River

Spatial–temporal distribution and geographic context of

Request PDF On Aug 1, 2013, Feng Li and others published Spatial–temporal distribution and geographic context of Neolithic cultural sites in the Hanjiang River Basin, Southern Shaanxi, China 2020年10月1日  Because the Jialing River is located in the upstream section of the Yangtze River, its water quality may affect the middownstream section of the Yangtze River Hence, it is urgent to develop a good method to evaluate the vertical distribution and fraction of Cd and Pb in sediments, which may further help us to understand the transformation and remobilization Assessing the remobilization and fraction of cadmium and lead in 2021年1月8日  Seasonal Distribution Characteristics and Health Risk Assessment of Heavy Metals in Surface Water of Qingjiang RiverSeasonal Distribution Characteristics and Health Risk Assessment 2023年4月16日  The study described the length–weight relationships (LWRs) and diversity status of fishes in the midstream of the Jialing River, which is the largest tributary of the upper Yangtze River, China A total of 4592 specimens from 53 fish species belonging to three orders and eight families were collected from December 2021 to November 2022 The results showed that Length–Weight Relationships and Diversity Status of Fishes in the

Simulation of spatial and temporal distribution on dissolved non

Fig 1 Digital elevation, river, subbasins of Jialing River Watershed Fig 2 Distribution map of agripopulation density Fig 3 Annual precipitation map in Jialing River Watershed Environ Earth Sci (2012) 65:1795–1806 1797 123 the effects of reservoirs, dams, regulators, water extractions; andriver’s flow introduced an accumulation of a large amount of garbage in the river channel and the direct discharge of wastewater into the river channel since 2016, resulting the serious pollution of the river channel and surrounding soil (Wei et al 2019) In 2016, the environmental remediation work at the Fuping section of the Shichuanhe Distribution, risk evaluation, and source analysis of the heavy river’s flow introduced an accumulation of a large amount of garbage in the river channel and the direct discharge of wastewater into the river channel since 2016, resulting the serious pollution of the river channel and surrounding soil (Wei et al 2019) In 2016, the environmental remediation work at the Fuping section of the Shichuanhe Distribution, risk evaluation, and source analysis of the heavy 2010年4月1日  A sand layer, interpreted as a hyperconcentrated flow deposit, was found interbedded between loess on a Yellow River terrace in Hukou, Shaanxi, ChinaOptical dating of a hyperconcentrated flow deposit on

Damming effects on dissolved inorganic carbon in different kinds

2017年4月9日  To assess the effects of river damming on dissolved inorganic carbon in the Jialing River, a total of 40 water samples, including inflow, outflow, and stratified water in four cascade reservoirs (Tingzikou, Xinzheng, Dongxiguan, Caojie) were collected in January and July, 2016 The major cations, anions, and δ13CDIC values were analyzed It was found that 2021年3月29日  The total altitude difference of the basin is approximately 4,800 m, while the altitude change of the river is approximately 2,300 m The average drop of the entire Jialing River system is 205‰ The upper part of the Jialing River Basin is in the mountainous area As its channel is very narrow, the streamflow is fast and abundantHydrological simulation of the Jialing River Basin using the 1 天前  Extreme weather, such as heatwaves, droughts, rainstorms and floods, present significant challenges for water quality in the context of global climate change (Kreibich et al, 2022; van Vliet et al, 2023)These events alter the transport of water, sediments, and nutrients due to hydrological changes in catchments, which in turn critically impact river water quality Combined effects of flood, drought and land use ScienceDirect2024年1月1日  The JRB (102°45′–108°55′E, 29°20′–34°30′N) originates from the south side of the Qinling Mountains in Feng County (Shaanxi Province, China), with a total drainage area of approximately 16 × 10 5 km 2, making it the largest subbasin in the Yangtze River Basin (Fig 1)The topography of the basin is complex, with the southern regions comprised of plains and Identification and analysis of evolution characteristics of flash

Correlations between Environmental Factors and the Distribution

After fish sampling, habitat variables, including elevation, river sinuosity, river wetting rate, vegetation coverage, and river habitat diversity, were estimated at each sampling site The measurement and calculation methods for each variable are as follows: The elevation was measured using a differential GPS (NavCom, Torrance, CA, USA) The Inventories of historical landslides play an important role in the assessment of natural hazards In this study, we used highresolution satellite imagery from Google Earth to interpret large landslides in Baoji city, Shaanxi Province on the southwestern edge of the Loess Plateau Then, a comprehensive and detailed map of the landslide distribution in this area was prepared in Inventory and Distribution Characteristics of LargeScale2021年7月7日  Runoff and sediment discharge have displayed great reductions due to climate change and enhanced various human activities during recent decades in the Jialing River, China, with significant Contributions of climate change and human activities to runoff 2023年4月16日  The study described the length–weight relationships (LWRs) and diversity status of fishes in the midstream of the Jialing River, which is the largest tributary of the upper Yangtze River, ChinaLength–Weight Relationships and Diversity Status of Fishes in the

Temporal and spatial distribution of ancient sites in Shaanxi

2021年9月28日  Revealing the evolutionary history of the relationship between humans and Earth will help us understand the spatial and temporal distribution of ancient cultural sites (referred to as ancient sites) This research explored the spatial and temporal distribution of ancient sites in Shaanxi Province (China) from the Han Dynasty to the Tang Dynasty and 2013年10月18日  Sediments were collected from the upper, middle and lower reaches of both urban and rural rivers in a typical urbanization zone of the Pearl River delta Six heavy metals (Cd, Cr, Cu, Ni, Pb and Zn) were analyzed in all sediment samples, and their spatial distribution, pollution levels, toxicity and ecological risk levels were evaluated to compare the Distribution and pollution, toxicity and risk assessment of heavy In order to scientifically analyze spatial and temporal changes of drought,this paper selects the Jialing river Basin as the research basin and SPI and SPEI indices are used as indices of droughtTo analyze the spatial and temporal changes of drought in the Jialing River basin,both SPI and SPEI drought indices for time scales of 3,6,9 and 12 months are calculated first,based APPLICATION OF SPEI FOR THE CHANGES OF DROUGHT IN JIALING RIVER 2021年3月11日  The Jialing River is a primary tributary on the left bank of the upper reaches of the Yangtze River It flows through Shaanxi Province, Gansu Province, Sichuan Province, and Chongqing Municipality Its mainstream is 1,120 km long, with a drop of 2,300 m, and an average gradient of 205‰ ( Lei et al 2006 )Multiobjective optimal operation of reservoir group in Jialing River

Effects of Climate Change and Human Activities on Runoff in the

2024年7月6日  In recent years, the runoff of numerous rivers has experienced substantial changes owing to the dual influences of climate change and human activities This study focuses on the Lixian hydrological station’s controlled basin, located in the upper reaches of the Jialing River in China The objective is to assess and quantify the impacts of human activities and This study investigated the distribution of heavy metals in the soil layer from 0 to 30 cm in the Yellow River beaches of Hancheng, Heyang and Tongguan section, China The results showed that: (1) In the soil of the study area, the average Zn content was highest, and the average contents of As and Cd were lowest Except for Ni, the coefficient of variation of other heavy DISTRIBUTION AND POTENTIAL ECOLOGICAL RISK ASSESSMENT 2021年10月1日  The evaluation value of river basin sustainable development by scoreradar maps (A) sustainable development, (B) economic development, (C) social development, and (D) ecological developmentSustainable Development Evaluation and Its Obstacle Factors 2011年7月15日  Jialing River is the largest tributary in the catchment area of Three Gorges Reservoir, and it is also one of the important areas of sediment yield in the upper reaches of the Yangtze River In recent years, significant changes of water and sediment characteristics have taken place The "Long Control" Project implemented since 1989 had greatly changed the Simulation of soil loss processes based on rainfall runoff and the

(PDF) Spatialtemporal distribution of cultivated land production

2012年5月15日  PDF In order to evaluate the status of cultivated land production capacity in Shaanxi province, meanwhile space distribution of the indexes were representedSemantic Scholar extracted view of "Spatial–temporal distribution and geographic context of Neolithic cultural sites in the Hanjiang River Basin, Southern Shaanxi, China" by Feng Li et al Skip to search form Skip to main content Skip to account menu Semantic Spatial–temporal distribution and geographic context of Neolithic

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