نتایج جستجو برای: acid rain

تعداد نتایج: 763115  

Journal: :Journal of Environmental Conservation Engineering 1988

Journal: :Journal of Environmental Conservation Engineering 1994

2013
Guohua Liang Xingzhao Liu Xiaomei Chen Qingyan Qiu Deqiang Zhang Guowei Chu Juxiu Liu Shizhong Liu Guoyi Zhou

The response of soil respiration to acid rain in forests, especially in forests of different maturity, is poorly understood in southern China despite the fact that acid rain has become a serious environmental threat in this region in recent years. Here, we investigated this issue in three subtropical forests of different maturity [i.e. a young pine forest (PF), a transitional mixed conifer and ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Kyle G Dexter Mathew Lavin Benjamin M Torke Alex D Twyford Thomas A Kursar Phyllis D Coley Camila Drake Ruth Hollands R Toby Pennington

We investigate patterns of historical assembly of tree communities across Amazonia using a newly developed phylogeny for the species-rich neotropical tree genus Inga We compare our results with those for three other ecologically important, diverse, and abundant Amazonian tree lineages, Swartzia, Protieae, and Guatteria Our analyses using phylogenetic diversity metrics demonstrate a clear lack o...

2013
Yaseen Al-Zubaidy Rosalina Abdul Salam

The visibility of a scene is degraded by weather phenomena such as rain drizzle, fog and haze. The degradation of image scene is due the substantial presence of particles in the atmosphere that scatter and absorb light. As the light spreads from object to the observer, the color and intensity is changed by the atmospheric particles. In this research, we suggest new methods to precisely detect a...

Journal: :Journal of environmental management 2005
Renato A Mendoza-Salgado Carlos H Lechuga-Devéze Alfredo Ortega-Rubio

At Ensenada de La Paz, a coastal lagoon on the western side of the Gulf of California, nutrient and salinity data before and after rain events were evaluated using a mass balance model to estimate the exchange of conservative and non-conservative variables with the adjacent sea. Surface salinity, nitrogen (N-NO3, N-NO2), and phosphorus (PO4) were used in the model to obtain the hydraulic balanc...

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