نتایج جستجو برای: anthropogenic

تعداد نتایج: 24952  

2014
Jinliang Huang Yaling Huang Zhenyu Zhang

Surface water samples of baseflow were collected from 20 headwater sub-watersheds which were classified into three types of watersheds (natural, urban and agricultural) in the flood, dry and transition seasons during three consecutive years (2010-2012) within a coastal watershed of Southeast China. Integrating spatial statistics with multivariate statistical techniques, river water quality vari...

2016
Leandro Nascimento Lemos Rosineide Cardoso de Souza Fabiana de Souza Cannavan André Patricio Victor Satler Pylro Rogério Eiji Hanada Tsai Siu Mui

The Anthropogenic Amazon Dark Earth soil is considered one of the world's most fertile soils. These soils differs from conventional Amazon soils because its higher organic content concentration. Here we describe the metagenome sequencing of microbial communities of two sites of Anthropogenic Amazon Dark Earth soils from Amazon Rainforest, Brazil. The raw sequence data are stored under Short Rea...

2016
Ashley A. Rowden Daniel Leduc Malcolm R. Clark David A. Bowden

Citation: Rowden AA, Leduc D, Clark MR and Bowden DA (2016) Habitat Differences in Deep-Sea Megafaunal Communities off New Zealand: Implications for Vulnerability to Anthropogenic Disturbance and Management. Front. Mar. Sci. 3:241. doi: 10.3389/fmars.2016.00241 Habitat Differences in Deep-Sea Megafaunal Communities off New Zealand: Implications for Vulnerability to Anthropogenic Disturbance and...

2002
C. L. Sabine R. A. Feely R. M. Key J. L. Bullister F. J. Millero K. Lee T.-H. Peng B. Tilbrook T. Ono C. S. Wong

[1] This work presents an estimate of anthropogenic CO2 in the Pacific Ocean based on measurements from the WOCE/JGOFS/OACES global CO2 survey. These estimates used a modified version of the DC* technique. Modifications include a revised preformed alkalinity term, a correction for denitrification, and an evaluation of the disequilibrium terms using an optimum multiparameter analysis. The total ...

2013
P. B. Holden N. R. Edwards S. A. Müller K. I. C. Oliver

We describe the design and evaluation of a large ensemble of coupled climate–carbon cycle simulations with the Earth system model of intermediate complexity GENIE. This ensemble has been designed for application to a range of carbon cycle questions, including the causes of lateQuaternary fluctuations in atmospheric CO2. Here we evaluate the ensemble by applying it to a transient experiment over...

2016
Rui Xiao Diwei Jiang George Christakos Xufeng Fei Jiaping Wu

Soil sealing (loss of soil resources due to extensive land covering for the purpose of house building, road construction etc.) and subsequent soil landscape pattern changes constitute typical environmental problems in many places worldwide. Previous studies concentrated on soil sealing in urbanized regions, whereas rural areas have not been given sufficient attention. Accordingly, this paper st...

2011
Yacine Kouba Concepción L. Alados Guillermo C. Bueno

11 12 Species distribution is usually explained by abiotic factors, particularly, climatic variables which 13 are often considered as the most important drivers of species distribution. Nevertheless, when 14 investigating the underlying causality in species distribution, the importance of those factors 15 together with the role of anthropogenic factors (land-use variables) must be considered. 1...

2012
Paul Ginoux Joseph M. Prospero Thomas E. Gill N. Christina Hsu Ming Zhao

[1] Our understanding of the global dust cycle is limited by a dearth of information about dust sources, especially small-scale features which could account for a large fraction of global emissions. Here we present a global-scale highresolution (0.1 ) mapping of sources based on Moderate Resolution Imaging Spectroradiometer (MODIS) Deep Blue estimates of dust optical depth in conjunction with o...

2017
Xiaoyang Song Yaohuan Huang Jingying Fu Dong Jiang Guangjin Tian

Nature reserves play an essential role in protecting natural resources and maintaining an ecological balance. However, certain nature reserves are increasingly disturbed by human activities in the form of settlements, roads, farmland, etc. How to monitor the status of nature reserves by using remote sensing methods has been a focus of scholars for a long time. In this study, remote sensing sate...

2008
Noelle E. Selin Daniel J. Jacob Robert M. Yantosca Sarah Strode Lyatt Jaeglé Elsie M. Sunderland

[1] We develop a mechanistic representation of land-atmosphere cycling in a global 3-D ocean-atmosphere model of mercury (GEOS-Chem). The resulting land-oceanatmosphere model is used to construct preindustrial and present biogeochemical cycles of mercury, to examine the legacy of past anthropogenic emissions, to map anthropogenic enrichment factors for deposition, and to attribute mercury depos...

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