搜索结果: 1-15 共查到“Decline”相关记录132条 . 查询时间(0.078 秒)
Decline in Aboveground Biomass Due to Fragmentation in Subtropical Forests of China
forest fragmentation patch size edge effects aboveground biomass fengshui forests
2023/12/19
Fragmentation has long been considered the primary cause for ecosystem degradation and biodiversity loss worldwide. Forest fragmentation affects ecosystem functioning and biodiversity in multiple ways...
Decline in CO2 cooled Earth’s climate over 30 million years ago
earth's climate CO2 greenhouse
2021/8/5
New research demonstrates that a decline in the concentration of atmospheric CO2 played a major role in driving Earth's climate from a warm greenhouse into a cold icehouse world around 34 million year...
Global climate dynamics drove the decline of mastodonts and elephants, new study suggests
extreme global environmental change the decline of mastodonts and elephants evolution
2021/8/4
Elephants and their forebears were pushed into wipeout by waves of extreme global environmental change, rather than overhunting by early humans, according to new research.
Warmer temperatures cause decline in key runoff measure
Warmer temperatures decline runoff measure
2017/7/20
Since the mid-1980s, the percentage of precipitation that becomes streamflow in the Upper Rio Grande watershed has fallen more steeply than at any point in at least 445 years, according to a new study...
Decades of Data on World’s Oceans Reveal a Troubling Oxygen Decline
Decades of Data World’s Oceans Oxygen Decline
2017/7/19
A new analysis of decades of data on oceans across the globe has revealed that the amount of dissolved oxygen contained in the water – an important measure of ocean health – has been declining for mor...
Research links decline in hemlock forests to changes in water resources
decline hemlock forests changes in water resources
2017/4/27
An insect infestation that is killing hemlock trees in New England forests is having a significant impact on the water resources of forested ecosystems that provide essential water supplies to one of ...
Rapid decline of Arctic sea ice a combination of climate change and natural variability
Rapid decline Arctic sea ice climate change natural variability
2017/3/30
Arctic sea ice in recent decades has declined even faster than predicted by most models of climate change. Many scientists have suspected that the trend now underway is a combination of global warming...
After two-year decline,postdoc employment at federally funded labs increases
After two-year decline postdoc employment federally funded labs
2016/11/4
The number of postdoctoral researchers employed at federally funded research and development centers (FFRDCs) rose to 2,696 in 2015, the first increase seen after two consecutive years of declines, ac...
FUTURE ESTIMATION OF CONVENIENCE LIVING FACILITIES WITHDRAWAL DUE TO POPULATION DECLINE ALL OVER JAPAN FROM 2010 TO 2040 - FOCUS ON SUPERMARKETS, CONVENIENCE STORES AND DRUGSTORES
Future Problem Facilities
2016/7/8
Population explosion is considered to be one of the most crucial problems in the world. However, in Japan, the opposite problem: population decline has become serious now. Japanese population is estim...
Factors in the decline of coastal ecosystems.
Brain imaging links Alzheimer’s decline to tau protein
Brain imaging Alzheimer’s decline tau protein
2016/5/19
A buildup of plaque and dysfunctional proteins in the brain are hallmarks of Alzheimer’s disease. While much Alzheimer’s research has focused on accumulation of the protein amyloid beta, researchers h...
High Cardiorespiratory Fitness Levels Slow the Decline in Peak Heart Rate with Age
EXERCISE TESTING AGING CROSS-SECTIONAL LONGITUDINAL
2017/4/13
Introduction: Although it is well accepted that peak HR (HRpeak) decreases with age, there is no clear consensus on the rate of this decline and the influence of cardiorespiratory fitness (CRF) on the...
Genes for age-related cognitive decline found in adult worm neurons (Nature)
Genes age cognitive decline adult worm neurons
2015/12/22
Researchers from Princeton University have identified genes important for age-related cognitive declines in memory in adult worm neurons, which had not been studied previously. The research, published...
Study finds High Plains Aquifer peak use by state,overall usage decline
High Plains Aquifer peak state decline
2015/12/7
A new Kansas State University study finds that the over-tapping of the High Plains Aquifer's groundwater beyond the aquifer's recharge rate peaked in 2006. Its use is projected to decrease by roughly ...
Does the Mortality Decline Promote Economic Growth?
Malthus Survival Probability Fertility Education Population Growth
2015/9/21
This paper analyzes qualitatively and quantitatively the effects of declining mortality
rates on fertility, education and economic growth. The analysis demonstrates that if
individuals are pru...