搜索结果: 31-45 共查到“国际动态 林业基础学科”相关记录125条 . 查询时间(1.015 秒)
国际最新研究：富国产品消费致热带森林面临严重威胁
富国 产品消费 热带森林 严重威胁
2021/3/31
施普林格·自然旗下专业学术期刊《自然-生态与演化》最新发表一项环境研究的论文称，富裕国家对牛肉、大豆、咖啡、可可、棕榈油、木材等产品的消费与热带地区临危生物群落的森林砍伐直接相关，该研究所获全球森林砍伐足迹地图，揭示热带森林面临着日益严重的威胁。
Sea otters keep remaining California kelp forests alive（图）
Sea otters keep remaining California kelp forests alive
2021/4/9
Sea otters have long been recognized as a classic example of a keystone species, a dominant predator that maintains the balance of kelp forest ecosystems by controlling populations of sea urchins, whi...
《自然》最新论文：植物和土壤或能互换储碳能力
植物 土壤 互换储碳
2021/3/25
国际著名学术期刊《自然》最新发表一篇气候变化研究论文，研究人员开展一项针对100多个实验的分析研究显示，当二氧化碳水平升高导致植物生物量增加时，土壤能够储存的碳量反而会减少。该论文称，由于当前的陆地碳汇模型并没有计入这种此消彼长的关系，因此未来的预测数据可能需要修改。
Scientists link flower color changes with climate fluctuations（图）
Scientists link flower color changes climate fluctuations
2021/3/26
Scientists at Clemson University have linked climate fluctuations over the past one and one-quarter centuries with flower color changes.Researchers combined descriptions of flower color from...
Seeing the forest for the shrubs in southern Appalachia（图）
Seeing shrubs southern Appalachia
2021/3/12
As ecosystems respond to human activity, what species will emerge as new trailblazers, shaping the diversity and resilience of these changing environments? And how can land managers identify these spe...
国际最新研究：欧洲森林或因气候驱动自然干扰失去逾半生物量
欧洲森林 气候驱动 自然干扰 生物量
2021/2/25
施普林格·自然旗下国际学术期刊《自然-通讯》最新发表一项环境研究论文称，欧洲森林可能会因气候驱动的自然干扰失去一半以上的生物量，这些自然干扰包括火灾、强风、虫灾等，或其任意组合。
Colorado mountains bouncing back from acid rain effects（图）
Colorado mountains bouncing acid rain effects
2021/1/8
A long-term trend of ecological improvement is appearing in the mountains west of Boulder, Colorado. Researchers at the University of Colorado Boulder found that Niwot Ridge, a high alpine a...
A new study by scientists at the Cornell Lab of Ornithology and other institutions confirms that most birds -- but not all -- synchronize their migratory movements with seasonal changes in v...
Few places on Earth are as rich in biodiversity, and as removed from human influence, as the world's largest rainforest -- the Amazon. Scientists at Louisiana State University have been cond...
世界最高树木吸碳能力超估算
世界 最高树木 吸碳能力 超估算
2020/10/19
美国和英国研究人员用激光测量后发现，世界最高树木重量远高于原来估算，吸收的碳元素也比原来估算多。据英国《泰晤士报》16日报道，英国伦敦大学学院和美国马里兰大学研究人员用激光测量美国加利福尼亚州北部生长的红杉后得出上述结论。红杉是世界上最高的树种。研究人员测量发现，一株名为“阿姆斯特朗上校”的老红杉高88米、重110吨，而原来估算重量是70吨至90吨。与先前测量技术相比，激光测量结果更准确。
Statement on the Nobel Prize for Economics 2020（图）
Wildfires changing forest communities interior Alaska
2020/10/16
As boreal forest wildfires increase in severity and frequency, new patterns of post-fire recovery are emerging. Research led by Jill Johnstone and colleagues at the U.S. National Science Foundati...
Forest margins may be more resilient to climate change than previously thought（图）
Forest margins resilient climate change previously thought
2020/10/10
A warming climate and more frequent wildfires do not necessarily mean the western United States will see the forest loss that many scientists expect.Dry forest margins, areas where forest meets sagebr...
Tree cover increased in Southeast Michigan over the past 30 years（图）
Tree cover increased Southeast Michigan over past 30 years
2020/8/14
The extent of both tree canopy and urban sprawl increased in Southeast Michigan between 1985 and 2015, according to a new University of Michigan study that used aerial photos and satellite i...
In a warming world, New England's trees are storing more carbon（图）
warming world New England trees storing more carbon
2020/8/14
Climate change has increased the productivity of forests, according to a new study that synthesizes hundreds of thousands of carbon observations collected over the last quarter-century. The ...
Rising temps put desert shrub in high-efficiency mode（图）
Rising temps put desert shrub high-efficiency mode
2020/7/31
Death Valley doesn't seem like the best place to ride out rising temperatures amid a changing climate. But for the desert plants that live there, it's home -- and they face the choice to adapt or die....