SPATIAL DISTRIBUTION AND DIVERSIFICATION OF MOLLUSC COMMUNITIES IN FLOOD SEDIMENTS WITHIN THE RIVER VALLEY BASED ON THE EXAMPLE FROM THE BESKID MAŁY RANGE (WEST CARPATHIANS, SOUTHERN POLAND)

2021 ◽  
Vol 16 (2) ◽  
pp. 315-328
Author(s):  
Witold Paweł ALEXANDROWICZ ◽  
Keyword(s):  
Spatial Distribution ◽  
River Valley ◽  
Southern Poland ◽  
West Carpathians

scholarly journals Temporal and spatial variation of NPP and its response to climatic factors in main river valleys on the southern slope of Qilian Mountains

2019 ◽  
Vol 131 ◽  
pp. 01044
Author(s):  
Rong-rong Yang ◽  
Guang-chao Cao ◽  
Sheng-kui Cao ◽  
Yao Lan ◽  
Zhuo Zhang ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Climatic Factors ◽  
Growing Season ◽  
Qilian Mountains ◽  
River Valley ◽  
Distribution Characteristics ◽  
Southern Slope ◽  
Qilian Mountain ◽  
Main River ◽  
River Valleys

Based on the NPP products of MODIS data, the spatial and temporal distribution characteristics of grassland NPP and its response to climatic factors in the vegetation growing season of the main river valleys in the southern slope of Qilian Mountains from 2000 to 2016 were carried out by correlation analysis and spatial interpolation. The research further provides a scientific basis for the quality evaluation of grassland ecosystems on the southern slope of Qilian Mountain and the rational use of grassland resources along the river. The results show that: (1) With the increasing distance of buffers on both sides of the river, the NPP of grassland in each year shows the characteristics of “single-peak” distribution, which is increased first and then decreased; (2) the NPP of grassland in the main river valley of the southern slope of Qilian Mountain The spatial distribution characteristics show a trend of increasing from northwest to southeast. (3) The spatial distribution of NPP and air temperature in the main river valleys of the southern slope of Qilian Mountains is gradually increasing from northwest to southeast, but the spatial distribution correlation coefficient of NPP and precipitation in the river valley grassland of vegetation growing season basically shows a trendof decreasing from northwest to southeast.

scholarly journals Exploration of the Confined Aquifers in the Yuyao River Valley (Eastern China) Using Electrical Sounding Method

2019 ◽  
Vol 136 ◽  
pp. 02020
Author(s):  
Yu Zhao ◽  
Youcan Yu ◽  
Yufan Shen
Keyword(s):  
Spatial Distribution ◽  
Groundwater Resources ◽  
Eastern China ◽  
Soil Layer ◽  
River Valley ◽  
Spatial Distribution Characteristics ◽  
Confined Aquifers ◽  
Electrical Sounding ◽  
Electrical Soundings ◽  
Hydrogeological Data

With abundant groundwater resources and obvious spatial distribution characteristics of confined aquifers, the Yuyao River valley is located in Ningbo, a coastal city in eastern China. It is greatly significant for studying the formation, movement and recharge of groundwater and establishing a sustainable groundwater management system to determine the spatial distribution of confined aquifers. In this paper, the spatial distribution of confined aquifers in the Yuyao River valley are studied by combining the symmetrical quadrupole electrical sounding method with hydrogeological data. Through analysis of the existing hydrogeological data, it is corroborated that there are sand gravel and round gravel confined aquifers in the study area. Then, the results of borehole-side electrical sounding measurements show that significant electrical differences are found among each rock-soil layer in the study area, and the resistivity of sand gravel and round gravel confined aquifers varies from 10 to 20 Ω·m. Finally, 77 symmetrical quadrupole electrical soundings on 5 lines were carried out perpendicular to the Yuyao River valley, and the data of electrical sounding were inverted and analyzed by the analysis software of GeoElectro. After calibration with boreholes, the confined aquifers in the study area were determined to be zonally distributed along the middle line of the valley, with buried depth ranging from -65 to -25 m and width exceeding 1000 m.

scholarly journals Low genetic diversity in the endangered population of Viola uliginosa in its locus classicus at Rząska near Cracow (Southern Poland) as revealed by AFLP markers

2011 ◽  
Vol 75 (3) ◽  
pp. 245-251 ◽  
Author(s):  
Elżbieta Cieślak ◽  
Wojciech Paul ◽  
Michał Ronikier
Keyword(s):  
Genetic Diversity ◽  
Spatial Distribution ◽  
Aflp Analysis ◽  
Data Set ◽  
Southern Poland ◽  
Low Genetic Diversity ◽  
Starting Point ◽  
Group A ◽  
Endangered Population ◽  
Locus Classicus

An extremely endangered population of <em>Viola uliginosa</em> Besser at the classical locality of this taxon has been studied. The AFLP analysis was based on 18 specimens of <em>V. uliginosa</em> (about 10% of preserved individuals); additionally, two individuals of <em>V. riviniana</em> were included in the data set as the out group. A high genetical uniformity of the whole population (similarity indexes close to 1) was detected. It was not correlated significantly with the spatial distribution of the plants. The study serves as a basis for practical conservation measures and at the same time as a starting point for a more extensive research on the genetical variability of the species throughout its range.

scholarly journals Spatial distribution of land cover and vegetation activity along topographic gradient in an arid river valley, SW China

2009 ◽  
Vol 6 (3) ◽  
pp. 274-285 ◽  
Author(s):  
Wen Liu ◽  
Xianli Xu ◽  
Jiancheng Luo ◽  
Zhanfeng Shen ◽  
Qiuhai Zhong
Keyword(s):  
Spatial Distribution ◽  
Land Cover ◽  
River Valley ◽  
Sw China ◽  
Topographic Gradient ◽  
Vegetation Activity

scholarly journals Spatial and Temporal Characteristics of Hand-Foot-and-Mouth Disease and Its Response to Climate Factors in the Ili River Valley Region of China

2021 ◽  
Vol 18 (4) ◽  
pp. 1954
Author(s):  
Suyan Yi ◽  
Hongwei Wang ◽  
Shengtian Yang ◽  
Ling Xie ◽  
Yibo Gao ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Foot And Mouth Disease ◽  
Mouth Disease ◽  
River Valley ◽  
Climate Factors ◽  
Temporal And Spatial Distribution ◽  
Positive Correlation ◽  
Ili River Valley ◽  
Foot And Mouth ◽  
Temporal And Spatial

Background: As the global climate changes, the number of cases of hand-foot-and-mouth disease (HFMD) is increasing year by year. This study comprehensively considers the association of time and space by analyzing the temporal and spatial distribution changes of HFMD in the Ili River Valley in terms of what climate factors could affect HFMD and in what way. Methods: HFMD cases were obtained from the National Public Health Science Data Center from 2013 to 2018. Monthly climate data, including average temperature (MAT), average relative humidity (MARH), average wind speed (MAWS), cumulative precipitation (MCP), and average air pressure (MAAP), were obtained from the National Meteorological Information Center. The temporal and spatial distribution characteristics of HFMD from 2013 to 2018 were obtained using kernel density estimation (KDE) and spatiotemporal scan statistics. A regression model of the incidence of HFMD and climate factors was established based on a geographically and temporally weighted regression (GTWR) model and a generalized additive model (GAM). Results: The KDE results show that the highest density was from north to south of the central region, gradually spreading to the whole region throughout the study period. Spatiotemporal cluster analysis revealed that clusters were distributed along the Ili and Gongnaisi river basins. The fitted curves of MAT and MARH were an inverted V-shape from February to August, and the fitted curves of MAAP and MAWS showed a U-shaped change and negative correlation from February to May. Among the individual climate factors, MCP coefficient values varied the most while MAWS values varied less from place to place. There was a partial similarity in the spatial distribution of coefficients for MARH and MAT, as evidenced by a significant degree of fit performance in the whole region. MCP showed a significant positive correlation in the range of 15–35 mm, and MAAP showed a positive correlation in the range of 925–945 hPa. HFMD incidence increased with MAT in the range of 15–23 °C, and the effective value of MAWS was in the range of 1.3–1.7 m/s, which was positively correlated with incidences of HFMD. Conclusions: HFMD incidence and climate factors were found to be spatiotemporally associated, and climate factors are mostly non-linearly associated with HFMD incidence.

scholarly journals Spatial Determinants of Business Location in Rural Areas

2016 ◽  
Author(s):  
Marek Kłodziński ◽  
Patrycjusz Zarębski
Keyword(s):  
Economic Development ◽  
Spatial Distribution ◽  
Statistical Analysis ◽  
Linear Model ◽  
Rural Areas ◽  
Southern Poland ◽  
Determination Coefficient ◽  
North Eastern ◽  
Socio Economic Development ◽  
Stable Development

The aim of the discussion in this paper was to identify types of gminas due to the dynamics of enterprise occurrence with respect to the level of socio-economic development. Four types of gminas were described, namely: sustainably developing, unstably developing, slowly developing ones as well as those immune to deve lopment. As a result of statistical analysis it was found out that the spatial distribution of the number of enterprises is not determined by the level of socio-economic development, which was confirmed by low correlation and low value of determination coefficient for the linear model. A low dynamics of enterprises’ development in northern Poland, and in the border gminas in the eastern and north-eastern parts of the country was noted. The map of types (models) of socio-economic development of Poland shows polarization. There is a clear division between gminas characterized by stable development, which are located mainly in the western and southern Poland, and the gminas featuring unstable development, which are located predominantly in the eastern part of Poland.

The Changing Cultural Landscape of the Lower St. Joseph River Valley

2019 ◽  
pp. 173-192
Author(s):  
Mark Hoock ◽  
Allison M. Hoock ◽  
Michael S. Nassaney
Keyword(s):  
Spatial Distribution ◽  
Native American ◽  
Cultural Landscape ◽  
Settlement Patterns ◽  
River Valley ◽  
Alliance Formation ◽  
Economic Relations ◽  
French Colonial ◽  
Archaeological Project ◽  
Political Economic

Archaeological studies conducted under the auspices of the Fort St. Joseph Archaeological Project have focused on material remains in the St. Joseph River valley in Niles, Michigan. Material remains indicate that human groups exploited resources and established settlements throughout the area, and that, in the context of local and regional political economic relations, those settlements shifted in response to changes in resources availability and alliance formation. This chapter examines the spatial distribution of Euro-American and Native American sites in the lower St. Joseph River Valley during the periods ranging from immediately prior, to during, and to after the occupation of Fort St. Joseph. Through the use of geographic information systems (GIS), the authors monitored changes in settlement patterns as they related to the establishment and abandonment of this French colonial outpost.

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