Spatiotemporal Changes in Gibberellin Content are Required for Soybean Nodulation

2021 ◽  
Author(s):  
Xitong Chu ◽  
Huanan Su ◽  
Satomi Hayashi ◽  
Peter M. Gresshoff ◽  
Brett J. Ferguson
Keyword(s):  
Spatiotemporal Changes ◽  
Gibberellin Content ◽  
Soybean Nodulation

Spatiotemporal Changes of Riverbed and Surrounding Environment in Yongding River (Beijing section) in the Past 40 Years

2020 ◽  
Vol 64 (4) ◽  
pp. 40407-1-40407-13 ◽  
Author(s):  
Ran Pang ◽  
He Huang ◽  
Tri Dev Acharya
Keyword(s):  
Economic Development ◽  
Water Conservation ◽  
Human Activities ◽  
Urban Areas ◽  
Water Volume ◽  
Cropland Area ◽  
The Past ◽  
Surrounding Environment ◽  
Spatiotemporal Changes ◽  
Yongding River

Abstract Yongding River is one of the five major river systems in Beijing. It is located to the west of Beijing. It has influenced culture along its basin. The river supports both rural and urban areas. Furthermore, it influences economic development, water conservation, and the natural environment. However, during the past few decades, due to the combined effect of increasing population and economic activities, a series of changes have led to problems such as the reduction in water volume and the exposure of the riverbed. In this study, remote sensing images were used to derive land cover maps and compare spatiotemporal changes during the past 40 years. As a result, the following data were found: forest changed least; cropland area increased to a large extent; bareland area was reduced by a maximum of 63%; surface water area in the study area was lower from 1989 to 1999 because of the excessive use of water in human activities, but it increased by 92% from 2010 to 2018 as awareness about protecting the environment arose; there was a small increase in the built-up area, but this was more planned. These results reveal that water conservancy construction, agroforestry activities, and increasing urbanization have a great impact on the surrounding environment of the Yongding River (Beijing section). This study discusses in detail how the current situation can be attributed to of human activities, policies, economic development, and ecological conservation Furthermore, it suggests improvement by strengthening the governance of the riverbed and the riverside. These results and discussion can be a reference and provide decision support for the management of southwest Beijing or similar river basins in peri-urban areas.

Early Maturing Soybean Nodulation and Performance with Selected Bradyrhizobium japonicum Strains

1907 ◽  
Vol 84 (3) ◽  
pp. 449-458 ◽  
Author(s):  
J. V. Wiersma ◽  
J. H. Orf
Keyword(s):  
Bradyrhizobium Japonicum ◽  
Early Maturing ◽  
And Performance ◽  
Soybean Nodulation

scholarly journals Spatiotemporal Changes in Vegetation Cover and Its Influencing Factors in the Loess Plateau of China Based on the Geographically Weighted Regression Model

Forests ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 673
Author(s):  
Chen Yang ◽  
Meichen Fu ◽  
Dingrao Feng ◽  
Yiyu Sun ◽  
Guohui Zhai
Keyword(s):  
Regression Model ◽  
Influencing Factors ◽  
Loess Plateau ◽  
Geographically Weighted Regression ◽  
Vegetation Cover ◽  
Weighted Regression ◽  
Vegetation Coverage ◽  
The Loess Plateau ◽  
Geographically Weighted Regression Model ◽  
Spatiotemporal Changes

Vegetation plays a key role in ecosystem regulation and influences our capacity for sustainable development. Global vegetation cover has changed dramatically over the past decades in response to both natural and anthropogenic factors; therefore, it is necessary to analyze the spatiotemporal changes in vegetation cover and its influencing factors. Moreover, ecological engineering projects, such as the “Grain for Green” project implemented in 1999, have been introduced to improve the ecological environment by enhancing forest coverage. In our study, we analyzed the changes in vegetation cover across the Loess Plateau of China and the impacts of influencing factors. First, we analyzed the latitudinal and longitudinal changes in vegetation coverage. Second, we displayed the spatiotemporal changes in vegetation cover based on Theil-Sen slope analysis and the Mann-Kendall test. Third, the Hurst exponent was used to predict future changes in vegetation coverage. Fourth, we assessed the relationship between vegetation cover and the influence of individual factors. Finally, ordinary least squares regression and the geographically weighted regression model were used to investigate the influence of various factors on vegetation cover. We found that the Loess Plateau showed large-scale greening from 2000 to 2015, though some regions showed decreasing vegetation cover. Latitudinal and longitudinal changes in vegetation coverage presented a net increase. Moreover, some areas of the Loess Plateau are at risk of degradation in the future, but most areas showed a sustainable increase in vegetation cover. Temperature, precipitation, gross domestic product (GDP), slope, cropland percentage, forest percentage, and built-up land percentage displayed different relationships with vegetation cover. Geographically weighted regression model revealed that GDP, temperature, precipitation, forest percentage, cropland percentage, built-up land percentage, and slope significantly influenced (p < 0.05) vegetation cover in 2000. In comparison, precipitation, forest percentage, cropland percentage, and built-up land percentage significantly affected (p < 0.05) vegetation cover in 2015. Our results enhance our understanding of the ecological and environmental changes in the Loess Plateau.

Spatiotemporal Changes in China's Terrestrial Water Storage From GRACE Satellites and Its Possible Drivers

2019 ◽  
Vol 124 (22) ◽  
pp. 11976-11993 ◽  
Author(s):  
Lei Xu ◽  
Nengcheng Chen ◽  
Xiang Zhang ◽  
Zeqiang Chen
Keyword(s):  
Water Storage ◽  
Terrestrial Water Storage ◽  
Spatiotemporal Changes ◽  
Terrestrial Water ◽  
Grace Satellites

Induction of immediate spatiotemporal changes in thalamic networks by peripheral block of ascending cutaneous information

Nature ◽  
1993 ◽  
Vol 361 (6412) ◽  
pp. 533-536 ◽  
Author(s):  
Miguel A. L. Nicolelis ◽  
Rick C. S. Lin ◽  
Donald J. Woodward ◽  
John K. Chapin
Keyword(s):  
Spatiotemporal Changes ◽  
Peripheral Block

Spatiotemporal changes in seismic velocity associated with hydraulic fracturing-induced earthquakes near Fox Creek, Alberta, Canada

2022 ◽  
Vol 208 ◽  
pp. 109390
Author(s):  
Adebayo Oluwaseun Ojo ◽  
Honn Kao ◽  
Ryan Visser ◽  
Chet Goerzen
Keyword(s):  
Hydraulic Fracturing ◽  
Seismic Velocity ◽  
Induced Earthquakes ◽  
Spatiotemporal Changes

Spatiotemporal changes and modulations of extreme climatic indices in monsoon-dominated climate region linkage with large-scale atmospheric oscillation

2021 ◽  
pp. 105840
Author(s):  
H.M. Touhidul Islam ◽  
Abu Reza Md. Towfiqul Islam ◽  
Md. Abdullah-Al-Mahbub ◽  
Shamsuddin Shahid ◽  
Anjum Tasnuva ◽  
...  
Keyword(s):  
Large Scale ◽  
Climatic Indices ◽  
Climate Region ◽  
Atmospheric Oscillation ◽  
Spatiotemporal Changes

scholarly journals Spatiotemporal changes in ecosystem services in the conservation priorities of the southern hill and mountain belt, China

2021 ◽  
Vol 122 ◽  
pp. 107225
Author(s):  
Shuai Ma ◽  
Liang-Jie Wang ◽  
Dianzhen Zhu ◽  
Jinchi Zhang
Keyword(s):  
Ecosystem Services ◽  
Conservation Priorities ◽  
Mountain Belt ◽  
Spatiotemporal Changes

Effect of aluminum on soybean nodulation and nodule activity in a vertical split‐root system

1997 ◽  
Vol 20 (7-8) ◽  
pp. 963-974 ◽  
Author(s):  
D. M. Silva ◽  
L. Sodek
Keyword(s):  
Root System ◽  
Split Root ◽  
Split Root System ◽  
Soybean Nodulation
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