搜索结果: 1-15 共查到“地球科学总论 Natural”相关记录55条 . 查询时间(0.171 秒)
Semi-natural habitat patches complement flower strips in protecting pollinators
pollinators semi-natural habitat soil
2021/8/11
Ecologists observe the diversity of insects on the edge of apple orchards on Lake Constance.
Natural hazards threaten 57% of US structures
natural disasters temperature environmental change structures
2021/8/4
More than half of the structures in the contiguous United States are exposed to potentially devastating natural hazards -- such as floods, tornadoes and wildfires -- according to a new study in the AG...
Response of the water use efficiency of natural vegetation to drought in Northeast China
natural vegetation drought water use efficiency (WUE)
2018/4/9
Drought has become a problem that is universally faced by global terrestrial ecosystems. Northeast China is located in a region sensitive to global climate changes, and one of the main impacts of clim...
The identification of a solar signal in climate records of the last 500 years using proxy and model-based analysis and the implications for natural climate variability
Satellite instruments car the solar constant solar energy output climate the climate warming
2014/10/22
There has been confirmation in the last two decades, through instrumental measurements onboard satellites, that the 'solar constant' does, as has long been hypothesized, vary. While there is no consen...
Characterization of Damage Zones Associated with Laboratory Produced Natural Hydraulic Fractures
Damage Zones Associated Laboratory Produced Natural Hydraulic Fractures
2014/10/21
Both joint sets and fault-related fractures serve as important conduits for fluid flow. In the former case, they can strongly influence both permeability and permeability anisotropy, with implications...
Holocene Climate and Environmental Changes: Disentangling Natural and Anthropogenic Signals in the Sedimentary Record of Lake Lilandsvatnet (NW Norway),
Holocene Climate and Environmental Changes Disentangling Natural Anthropogenic Signals Sedimentary Record of Lake Lilandsvatnet
2014/10/21
This thesis presents a multi-proxy paleoenvironmental reconstruction from the sedimentary archives of Lilandsvatnet, a small arctic lake on Vestvågøy, in the Lofoten Islands, Norway. Lofoten...
Update of the Chronology of Natural Signals in the Near-Surface Mean Global Temperature Record and the Southern Oscillation Index
Climate Variability Southern Oscillation Index ENSO
2013/3/11
Time series for the Southern Oscillation Index and mean global near surface temperature anomalies are compared for the 1950 to 2012 period using recently released HadCRU4 data. The method avoids a foc...
Variations of Natural Soil Salinity in an Arid Environment Using Underground Watertable Effects on Salinization of Soils in Irrigated Perimeters in South Tunisia
Oasis Irrigation Water Superficial Water Table Salinity Drainage Tunisia
2013/3/11
In arid and semi-arid regions, salinity is a serious and chronic problem for agriculture. The aim of this study is to evaluate the hydromorphical and salinity risks, and to evaluate the relationship a...
Changes in the Shoreline Position Caused by Natural Processes for Coastline of Marsa Alam – Hamata, Red Sea, Egypt
Shoreline Changes Red Sea Satellite Images Climate Changes Coastal Processes
2013/3/7
The probability of storms and ice-drift events and their impact on coasts is expected to increase as result of climate change. Multi-years shoreline mapping is considered a valuable task for coastal m...
A new mobile application provides users with simplified access to vast libraries of images and information that up until now were tapped mainly by earth and environmental scientists. The EarthObserve...
Payment schemes for hydrological ecosystem services as a political instrument for the sustainable management of natural resources and poverty reduction – a case study from Belén, Nicaragua
Payment schemes hydrological ecosystem services a political instrument for the sustainable management of natural resources poverty reduction – a case study
2010/9/10
The importance of intact ecosystems for human-wellbeing as well as the dependence on functions and services they provide is undoubted. But still neither the costs of ecosystem degradation nor the bene...
Sedimentation Processes at the Navigation Channel of the Liquefied Natural Gas (LNG) Port, Nile Delta, Egypt
Sedimentation Rate Nile Delta Navigation Channel Bed Load
2013/3/6
Liquefied Natural Gas (LNG) port is located at Abu Qir Bay on the northwestern coast of the Nile delta, Egypt. The port was constructed in 2004 to export liquefied natural gas worldwide. The offshore ...
Natural iron enrichment around the Antarctic Peninsula in the Southern Ocean
Natural iron enrichment the Antarctic Peninsula the Southern Ocean
2010/1/21
In the Bransfield Strait, representing a mixture of waters from the Weddell Sea and the Antarctic Circumpolar Current (ACC), concentrations of DFe were ~0.4 nM and of TaLFe ~1.7 nM. The highest concen...
Natural iron enrichment around the Antarctic Peninsula in the Southern Ocean
Natural iron enrichment Antarctic Peninsula Southern Ocean
2010/1/7
As part of the US-AMLR program in January-February of 2006, 99 stations in the South Shetland Islands-Antarctic Peninsula region were sampled to understand the variability in hydrographic and biologic...
Hazards caused by natural and anthropogenic changes of catchment area in karst
natural and anthropogenic changes catchment area karst hazards
2009/12/14
Determination of the catchment area is the starting point in most hydrological analyses. It serves as a basis for many hydrological and water resources management calculations. The catchment boundarie...