Variability, drivers, and effects of atmospheric nitrogen inputs across an urban area: Emerging patterns among human activities, the atmosphere, and soils

2017 ◽  
Vol 609 ◽  
pp. 1524-1534 ◽  
Author(s):  
Stephen M. Decina ◽  
Pamela H. Templer ◽  
Lucy R. Hutyra ◽  
Conor K. Gately ◽  
Preeti Rao
2000 ◽  
Vol 31 ◽  
pp. 729-730
Author(s):  
G. de Leeuw ◽  
L.H. Cohen ◽  
G.J. Kunz ◽  
M.M. Moerman ◽  
G. Geernaert ◽  
...  

2006 ◽  
Vol 3 (3) ◽  
pp. 271-280 ◽  
Author(s):  
T. Jickells

Abstract. This contribution to the Spot-On volume considers the magnitude and composition of atmospheric nitrogen inputs to the oceans and then goes on to consider the impacts of these inputs. Effects in open ocean and coastal areas are probably different. Offshore atmospheric inputs may produce a small enhancement of overall ocean productivity and hence CO2 drawdown. In coastal waters atmospheric inputs contribute significantly to overall eutrophication pressure, but evidence that they trigger algal blooms is limited. Management of atmospheric inputs to coastal waters to mitigate eutrophication pressures requires that emissions be managed over a wide area reflecting the efficient long range transport of atmospheric nitrogen. Strategies for management of oxidised and reduced nitrogen deposition will be different reflecting their different rates of deposition.


2006 ◽  
Vol 3 (1) ◽  
pp. 183-210 ◽  
Author(s):  
T. Jickells

Abstract. This contribution to the Spot-On volume considers the magnitude and composition of atmospheric nitrogen inputs to the oceans and then goes on to consider the impacts of these inputs. Effects in open ocean and coastal areas are probably different. Offshore atmospheric inputs may produce a small enhancement of overall ocean productivity and hence CO2 drawdown. In coastal waters atmospheric inputs contribute significantly to overall eutrophication pressure, but evidence that they trigger algal blooms is limited. Management of atmospheric inputs to coastal waters to mitigate eutrophication pressures requires that emissions be managed over a wide area reflecting the efficient long range transport of atmospheric nitrogen. Strategies for management of oxidised and reduced nitrogen deposition will be different reflecting their different rates of deposition.


2017 ◽  
Vol 15 (1) ◽  
Author(s):  
Illyani Ibrahim

Socio-economic indicators are important indexes to measure the effect of human activities towards climate. This paper aims to study on the two main socioeconomic indicators for the urban area, namely population and GDP, to determine the relationship between these variables and climate condition. The State of Selangor, Malaysia was chosen as the study area as this state is among the highest GDP contributors to the country. Secondary data was used for this study by utilising datasets from Statistical Department and Department of Meteorology. The model derived shows that climate condition is moderately dependence of population and GDP. Further analysis can focus on more important socioeconomic variables which may contributed to the climate condition in the urban area.


2015 ◽  
Vol 3 (2) ◽  
pp. 01
Author(s):  
G. Martins ◽  
R. L. S. Ferraz ◽  
J. L. Batista ◽  
M. A. Barbosa

<p>Em decorrência de atividades antrópicas exploratórias, tem ocorrido aumento na supressão de espécies arbóreas, refletindo na biodiversidade e equilíbrio dos ecossistemas, reduzindo a população de espécies de abelhas.<strong> </strong>Objetivou-se com este trabalho, fazer um levantamento da ocorrência de árvores, nidificações e espécies de abelhas com intuito de incentivar o plantio de espécimes, principalmente nativos, na área urbana, para que ocorra uma maior proliferação das abelhas indígenas sem ferrão. Para tanto, realizou-se um estudo na Praça Dr. Joaquim Batista na cidade de Jaboticabal, SP. Através de consultas em literatura especializada, identificou-se o número de espécies arbóreas e abelhas sem ferrão, o número e altura média de nidificações, além da coleta de sementes para produção de mudas. Foram identificadas 27 espécies de árvores nativas, 14 exóticas, cinco de abelhas sem ferrão, 37 nidificações, com altura média geral de 2,3 m, além da produção de 20 mudas nativas. A elevada ocorrência de nidificações em plantas nativas e a presença de sementes, demonstram a adaptabilidade destes polinizadores, além de subsidiar a viabilidade da proposta de incentivar o plantio de espécimes, principalmente nativas em área urbana para a proliferação das abelhas indígenas sem ferrão. Estudos complementares podem ser realizados visando educação ambiental nestes locais.</p><p align="center"><strong>Encouraging the planting of native trees in the urban area for proliferation of stingless bees</strong></p><p>As a result of exploratory human activities, there has been an increase in the suppression of tree species, reflecting on biodiversity and ecosystem balance, reducing the population of bee species. The objective of this work, to survey the occurrence of trees, Nest establishment and bee species in order to encourage the planting of species, mostly native, in urban areas, so that there is a higher proliferation of indigenous stingless bees. Therefore, we carried out a study in Dr. Joaquim Batista Square in the city of Jaboticabal, SP. Through consultations in the literature, we identified the number of tree species and stingless bees, the average number and height of Nest establishment, besides the collection of seeds for seedlings. They identified 27 species of native trees, 14 exotic, five of stingless bees, 37 Nest establishment, with overall average height of 2.3 m, in addition to producing 20 native seedlings. The high occurrence of Nest establishment of native plants and the presence of seeds demonstrate the adaptability of these pollinators, in addition to supporting the viability of the proposal to encourage the planting of specimens, especially in urban areas native to the proliferation of indigenous stingless bees. Additional studies can be conducted to environmental education in these places.</p>


2003 ◽  
Vol 23 (17-19) ◽  
pp. 1743-1755 ◽  
Author(s):  
Gerrit de Leeuw ◽  
Lucinda Spokes ◽  
Tim Jickells ◽  
Carsten Ambelas Skjøth ◽  
Ole Hertel ◽  
...  

2017 ◽  
Vol 15 ◽  
Author(s):  
Illyani Ibrahim

Socio-economic indicators are important indexes to measure the effect of human activities towards climate. This paper aims to study on the two main socioeconomic indicators for the urban area, namely population and GDP, to determine the relationship between these variables and climate condition. The State of Selangor, Malaysia was chosen as the study area as this state is among the highest GDP contributors to the country. Secondary data was used for this study by utilising datasets from Statistical Department and Department of Meteorology. The model derived shows that climate condition is moderately dependence of population and GDP. Further analysis can focus on more important socioeconomic variables which may contributed to the climate condition in the urban area.


2016 ◽  
Vol 20 (3) ◽  
pp. 1
Author(s):  
Liu Zhongpei ◽  
Ping Jianhua ◽  
Han Yuping

It is vital for analyzing groundwater chemical characteristics to develop, manage and protect groundwater resources. Hydrogeochemistry simulation, graphic method, and other methods are applied to analyze 22 pieces of groundwater chemical data in the urban area of Zhumadian City. The results show that shallow groundwater is mainly of HCO3-Ca type. Besides, from northeast to southwest, salinity and hardness increase gradually, the hydrodynamic condition becomes worse, and groundwater is significantly affected by human activities. This study is of important significance to scientifically using and managing groundwater resources in the urban area of Zhumadian City. Características químicas y distribución espacial de las aguas freáticas en el área urbana de Zhumadian (China)ResumenEl análisis de las características químicas de las aguas freáticas o subterráneas es determinante para desarrollar, administrar y proteger los recursos hídricos. Este trabajo se basó en la simulación hidrogeoquímica, el método gráfico y otros procedimientos para analizar la información química de 22 muestras de aguas freáticas en el área urbana de Zhumadian, en el este de China. Los resultados muestran que las aguas freáticas poco profundas son principalmente del tipo HCO3-Ca. Además, del noreste al suroeste, la salinidad y la rigidez aumentan gradualmente, las condiciones hidrodinámicas empeoran y las aguas freáticas son afectadas por las actividades humanas. Este estudio es de una importancia significativa para el manejo científico y la administración de los recursos de aguas subterráneas en el área urbana de Zhumadian.


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