Results 11 to 20 of about 1,243 (145)

Geomorphological controls over carbon distribution in permafrost soils: the case of the Narsajuaq river valley, Nunavik (Canada)

open access: yesArctic Science, 2020
Soils in the northern circumpolar region play a central role in the global carbon cycle because the release of carbon through permafrost thaw and geomorphological disturbances can potentially cause a feedback on climate.
Samuel Gagnon, Michel Allard
doaj   +1 more source

Research progress of paleokarst oil and gas reservoirs

open access: yesCarsologica Sinica, 2022
The transformation of soluble rocks by paleokarst can form dissolution pores and other reservoir spaces. Especially for carbonate rocks, the development of paleokarst can greatly improve the reservoir performance of the formation and form karst ...
Yu ZHANG   +3 more
doaj   +1 more source

Progress and challenges of big data research on petrology and geochemistry

open access: yesSolid Earth Sciences, 2018
We are entering the era of big data, and big data achievements have benefited ordinary people. However, big data application in geochemistry research has not been really appreciated. Big data is a kind of method and a pattern of thought.
Shoutao Jiao   +5 more
doaj   +1 more source

Land management to control sand and dust storm sources – case study: The dust hotspot of south-eastern Ahvaz, Iran [PDF]

open access: yesE3S Web of Conferences
Sand and dust storms cause damages to infrastructure, human society, and the environment. The methods used to control wind erosion depend on the type of ecosystem and land use.
Abbasi Hamidreza   +9 more
doaj   +1 more source

Streamflow generation in a nested system of intermittent and perennial tropical streams under changing land use [PDF]

open access: yesHydrology and Earth System Sciences
Despite the increased interest in the hydrology of intermittent hydrological streams in recent years, little attention has been given to these systems in tropical forest environments.
G. M. Mosquera   +9 more
doaj   +1 more source

Redefining floristic zones in the Korean Peninsula using high‐resolution georeferenced specimen data and self‐organizing maps

open access: yesEcology and Evolution, 2020
The use of biota to analyze the distribution pattern of biogeographic regions is essential to gain a better understanding of the ecological processes that cause biotic differentiation and biodiversity at multiple spatiotemporal scales.
Songhie Jung, Yong‐chan Cho
doaj   +1 more source

Impact of seasonal changes on the vegetation composition of some selected areas in Lagos state, Nigeria

open access: yesMediterranean Botany, 2019
Rapid degradation of wetlands and habitat fragmentation are major threats to species diversity and ecological paradigm in Lagos state, Nigeria. Best to our knowledge, no empirical study has explored the effects of seasonal changes on covering three ...
Peter Adegbenga Adeonipekun   +2 more
doaj   +1 more source

Analysis of Geological Multi-Hazards in an Urban District

open access: yesGeosciences
This work aims to describe, classify, and analyze the occurrence of selected natural multi-hazards, specifically pluvial floods and sinkholes, affecting a district in the urban area of Rome, Italy.
Cristina Di Salvo   +4 more
doaj   +1 more source

Research Progress and Prospects on Risk Assessment and Early Warning for Embankment Safety in Estuarine and Coastal Areas [PDF]

open access: yes长江科学院院报
In recent years, under the combined effects of intensified human activities, climate change, and sea level rise, estuarine and coastal areas have faced increasing risks of extreme flood-tide damage, posing a serious threat to the safety of estuarine and ...
ZHU Yong-hui, LI Meng-yu, LUAN Hua-long, QU Geng, YUAN Yuan, WU Wei-wei, GE Jian-zhong, GUO Jun
doaj   +1 more source

Spatial prediction of stream physicochemical parameters for the Napo River Basin, Ecuador

open access: yesJournal of Freshwater Ecology, 2019
Major threats to freshwater ecosystems in the Andean-Amazon region include agriculture, point and nonpoint source pollution, hydroelectric dams, oil extraction, mining and road building, yet little is known about the baseline values and current state of ...
Alexander V. Alexiades   +3 more
doaj   +1 more source

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