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摘要: 俄罗斯平原针-阔林过渡带森林群落的物种多样性的研究表明,该地区的物种多样性类同于许多类型的过渡带,即群落的过渡带 (针阔混交林)比相邻群落(针叶林和阔叶林)具有更高的多样性。针阔混交林群落的组成结构较好地反映了其特殊的过渡性。在该过渡带较高的物种多样性并不证明群落稳定性的增加。因此,在探讨多样性与群落稳定性关系时,综合包括均匀度在内的多个指数才可能作出较为客观的结论。
June 21, 2007,Forests in the United States and other northern mid- and upper-latitude regions are playing a smaller role in offsetting global warming than previously thought, according to a study appe...
据美国每日科学网站2007年6月19日报道,美国俄勒冈州立大学的林业科学家通过修改树的基因,成功控制了树木生长高度。专家说,这种技术拥有广泛的用途,从观赏植物到苗圃业,都可从中受益,但推广的前提是要消除规章制度方面的障碍,前景还是一个未知数。研究表明,人类可以培育出微型树,这种树看起来和普通树没什么两样,但经过多年生长,高矮控制在50英尺(1英尺约合0.3米)到几英寸不等。这证明通过基因工程技术,...
May 27, 2007,EAST LANSING, Mich. — Scientists at Michigan State University’s Global Observatory for Ecosystem Services – or GOES – have a treasure trove of resources many of their peers would envy.
Trees to offset the carbon footprint?     Trees  global warming  ecosystems       font style='font-size:12px;'> 2007/4/10
9-Apr-2007,LIVERMORE, Calif. ?How effective are new trees in offsetting the carbon footprint? A new study suggests that the location of the new trees is an important factor when considering such carbo...
Jack Saddler speaks to UN delegates on climate change(图)     forests  Energy  climate change       font style='font-size:12px;'> 2007/3/28
On Sunday and Monday, March 11 and 12, Dean Jack Saddler travelled to Rome for the 18th Session of the Food and Agriculture Organization of the United Nations (FAO) Committee on Forestry. Dr. Saddler ...
Global report cites progress in slowing forest losses     forest management  biological diversity       font style='font-size:12px;'> 2007/3/28
13 March 2007, Rome – A number of regions of the world are reversing centuries of deforestation and are now showing an increase in forest area, according to FAO's State of the World’s Forests report, ...
Rome, 5 March 2007 - With help from FAO, farmers in six sub-Saharan countries have been able to increase their income from the sale of gums and resins and to restore degraded land.
Warm Temperatures, Lack Of Rainfall Increasing     wildfire  Rainfall       font style='font-size:12px;'> 2007/3/6
03-01-2007,TALLAHASSEE - Florida Agriculture and Consumer Services Commissioner Charles H. Bronson today warned of a higher wildfire threat this spring due to warm temperatures and a lack of widesprea...
WASHINGTON, Jan. 29, 2007 -- Agriculture Secretary Mike Johanns today announced a $9.4 million conservation partnership with Arkansas Governor Mike Beebe to restore more than 6,000 acres of hardwood t...
Coffee keeps the web of life buzzing     ainforest  Coffee  ecosystems       font style='font-size:12px;'> 2007/1/24
11 January 2007,Sections of rainforest used to grow coffee maintain more intact ecosystems than areas cleared for intensive agriculture such as rice-growing or pasture, a study by scientists from Oxfo...
分割亚马孙丛林将威胁鸟类生存     原始森林  鸟类       font style='font-size:12px;'> 2007/1/15
据新华社巴西利亚2007年1月12日报道,巴西科学家在最新一期美国《科学》杂志上撰文指出,亚马孙丛林正被人为地分割成若干小块区域,这对地区生态造成严重影响,并威胁到当地鸟类的生存。
暖冬让树木“元气大伤”     树木  “元气大伤”       font style='font-size:12px;'> 2006/12/30
新华社柏林2006年12月20日欧洲很多地方都正在经历有气象记录以来最温暖的冬天。德国专家日前说,反常的温暖气候会破坏森林的正常休眠、生长状态,造成的损伤可能好几年都无法得到恢复。据德国《每日镜报》报道,德国森林生态专家说,树木到了冬天一般会进入正常的休眠状态并储备能量,以待来年春天再度进入生长状态。然而2006年持续较高的温度使得树木无法正常进入休眠状态,反而继续挥发其储备能量,这使得树木“元气...
Asian Development Bank to Address Forest Loss and Rural Poverty in Viet Nam     Forest loss  rural poverty       font style='font-size:12px;'> 2006/12/11
1 December 2006,MANILA, PHILIPPINES - ADB will help address the problems of forest loss and degradation as well as rural poverty in Viet Nam’s Central Highlands through a US$45 million loan.
Dec. 1, 2006,The fate of the Amazon rainforest is increasingly tied to the global commodity marketplace, according to a new study by scientists at the Woods Hole Research Center, the University of Flo...

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