24СʱÈÈÃŰæ¿éÅÅÐаñ    

²é¿´: 3116  |  »Ø¸´: 14

Phoebus_Sun

Òø³æ (СÓÐÃûÆø)


[½»Á÷] ×îеØÑ§SCIµ¼¶Á -- Vol. 7

1. Water Security: Research Challenges and Opportunities

An estimated 80% of the world's population faces a high-level water security or water-related biodiversity risk (1). The issue of water security¡ªdefined as an acceptable level of water-related risks to humans and ecosystems, coupled with the availability of water of sufficient quantity and quality to support livelihoods, national security, human health, and ecosystem services (2, 3)¡ªis thus receiving considerable attention. To date, however, the majority of academic research on water security is relatively poorly integrated with the needs of policy-makers and practitioners; hence, substantial changes to funding, education, research frameworks, and academic incentive structures are required if researchers are to be enabled to make more substantive contributions to addressing the global water crisis.

Source: Science 24 August 2012: Vol. 337 no. 6097 pp. 914-915 DOI: 10.1126/science.1226337

2. A Long View on Climate Sensitivity

Humanity is engaged in an unprecedented climate experiment, the outcome of which is often framed in terms of an equilibrium ¡°climate sensitivity.¡± This parameter encapsulates the amount of global warming that may be expected as a result of a doubling of the atmospheric carbon dioxide (CO2) concentration, which is equivalent to an additional 3.7 W m−2 of energy available to warm Earth's surface (1). The current best estimate of climate sensitivity is similar to the earliest estimates by Arrhenius (2) and Callendar (3), ranging from 2¡ã to 4.5¡ãC (4). Constraints on the lower limit of this range are much tighter than they are on the upper limit, with small but finite probabilities for very large climate sensitivities (4). Although the geological record provides strong support for climate sensitivities in this range, it also reminds us that a single value of climate sensitivity is unlikely to provide a complete picture of the climate system's response to forcing.

Source: Science 24 August 2012: Vol. 337 no. 6097 pp. 917-919 DOI: 10.1126/science.1224011

3. Assessing surface water consumption using remotely-sensed groundwater, evapotranspiration, and precipitation
Surface water consumption observations are needed for hydrology and agriculture
We developed an approach to estimate consumption using remote sensing data
Our approach estimated water consumption to <6% (17 mm/year) for California

Source: GEOPHYSICAL RESEARCH LETTERS, VOL. 39, L16401, 6 PP., 2012
doi:10.1029/2012GL052400

4. Characteristics and drivers of global NDVI-based FPAR from 1982 to 2006
Key Points:
Interannual and spatial variation characteristics of a long-term global FPAR
Climatic influence on global FPAR
Land cover change (such as deforestation and afforestation) and FPAR variation

Source: GLOBAL BIOGEOCHEMICAL CYCLES, VOL. 26, GB3015, 15 PP., 2012
doi:10.1029/2011GB004060
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:

²é¿´È«²¿É¢½ðÌù

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

changh

Ìú¸Ëľ³æ (ÖªÃû×÷¼Ò)


¡ï
Phoebus_Sun(½ð±Ò+2): лл²ÎÓë
¸Ðл£¡
4Â¥2012-08-24 15:32:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Ììɽ·ÉÑ©

ľ³æ (ÕýʽдÊÖ)


¡ï
Phoebus_Sun(½ð±Ò+2): лл²ÎÓë
лл£¬ÐÁ¿à
5Â¥2012-08-24 18:48:25
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

camelȮ

Í­³æ (ÕýʽдÊÖ)


ÐÁ¿àÁË
7Â¥2012-08-25 08:29:34
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ljrlove

½ð³æ (СÓÐÃûÆø)


лл¡£¡£
8Â¥2012-08-26 07:59:25
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yitiantuchon

ľ³æ (ÕýʽдÊÖ)


ѧÈÕ±¾ÓïµÄ£¬
9Â¥2012-08-26 09:07:01
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

120246892

½ð³æ (ÕýʽдÊÖ)


¿´¿´ÏÈ
12Â¥2013-03-20 14:37:52
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

flybear007

Ìú¸Ëľ³æ (СÓÐÃûÆø)


àÅ£¡£¡¿ªÑÛ~
13Â¥2013-04-02 15:13:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

rggworld

ľ³æ (Ö°Òµ×÷¼Ò)


¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
Õâ¸öÊÇʲôÒâ˼£¿
14Â¥2013-04-03 09:24:14
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

×ݺá³Û³Ò027

гæ (³õÈëÎÄ̳)


¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
¾ÍÊÇÉæ¼°µÄ·¶Î§Ì«Õ­ÁË£¬µØÏÂË®ºÍµØ±íË®
15Â¥2013-11-09 10:32:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
¼òµ¥»Ø¸´
2012-08-24 15:18   »Ø¸´  
Phoebus_Sun(½ð±Ò+2): лл²ÎÓë
xuexididi3Â¥
2012-08-24 15:32   »Ø¸´  
Phoebus_Sun(½ð±Ò+2): лл²ÎÓë
lzk558826Â¥
2012-08-24 19:29   »Ø¸´  
Phoebus_Sun(½ð±Ò+2): лл²ÎÓë
ÖìÖÒÅô10Â¥
2012-11-30 16:12   »Ø¸´  
y65162609311Â¥
2012-12-16 18:48   »Ø¸´  
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ Phoebus_Sun µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[»ù½ðÉêÇë] ͶƱ:  ÓжàÉÙÈËÊǽñÌì²éϵͳ֪µÀ½á¹ûµÄ£¿ +12 °®¿´ÊéµÄ¿ÉÀÖ 2026-08-26 14/700 2026-08-26 15:48 by coolysnow
[»ù½ðÉêÇë] ·¶½øÖоÙÒ»ÎĵÄÖÐÐÄ˼Ïë +9 Ñ׻ƹóëÐ 2026-08-22 10/500 2026-08-26 15:40 by semaglutide
[»ù½ðÉêÇë] 2026¹ú×ÔÈ»º¯ÆÀ·Ñµ½ÕË +22 ÑòÑü°å 2026-08-21 25/1250 2026-08-26 15:00 by zuocuiping
[»ù½ðÉêÇë] ³öÀ´ÁË +9 trojank 2026-08-26 9/450 2026-08-26 14:25 by ±¦±´³æ×Ó
[»ù½ðÉêÇë] ¿ÆÑй¶ùÌ«ÄÑÁË +21 ÎÒ4´ó°×²Ë 2026-08-20 22/1100 2026-08-26 11:29 by nlgza
[»ù½ðÉêÇë] Ôõô²é°¡ +4 huang1991js 2026-08-26 4/200 2026-08-26 11:26 by panjy.cn
[»ù½ðÉêÇë] ¹ú¼ÊºÏ×÷¿É²éÁË£¬ÖÐÁËÃæÉÏ +18 Ldrop2023 2026-08-26 18/900 2026-08-26 11:15 by cmrandy
[»ù½ðÉêÇë] ¹úºÏ¿É²éÁË +3 paperzjh 2026-08-26 3/150 2026-08-26 10:41 by LemmonTr
[Ö°³¡ÈËÉú] ѧÉúײ¼û¸¨µ¼Ô±ËÍÍâÂô£¬µÚ¶þÌìÈ«°à¶¼³ÁĬÁË +3 ¾¨ÓãÈÚ½ð_Õã½­_É 2026-08-22 3/150 2026-08-26 09:01 by zzuzxg
[»ù½ðÉêÇë] ÔÚ¼á±ù»¹¸Ç×ű±º£µÄʱºò£¬ÎÒ¿´µ½ÁËÅ­·ÅµÄ÷»¨¡£ (½ð±Ò+10) +6 ziyangfang 2026-08-25 9/450 2026-08-25 20:26 by huagongfeihu
[»ù½ðÉêÇë] ijЩ»ú¹¹£¬ÒÔЧÂʵÍΪÈÙ£¬ÒÔЧÂʵÍ×÷Ϊ´æÔڸР+9 yuleib84 2026-08-25 10/500 2026-08-25 17:14 by alexon
[»ù½ðÉêÇë] ½ñÈÕ²»·Å°ñ£¿Íø´«¹ú×ÔȻԤ¼Æ 8 Ô 27 Èտɲé½á¹û +17 ҽѧÀÏÄк¢ 2026-08-20 22/1100 2026-08-25 15:36 by ҽѧÀÏÄк¢
[»ù½ðÉêÇë] ûÓÐÈκÎÏûÏ¢-ÊDz»ÊǾÍÁ¹ÁË +9 ͼÀ²Í¼À² 2026-08-24 10/500 2026-08-25 11:59 by ÄϺ£Ð¡¸ç
[½Ìʦ֮¼Ò] µ¼Ê¦Í²ۣºÎÒÔõô̯ÉÏÁËÕâô¸ö¼«Æ·Ñо¿Éú£¡ +3 ËÕ¶«ÆÂ¶þÊÀ 2026-08-23 3/150 2026-08-25 10:35 by shisan1313
[»ù½ðÉêÇë] ÎÒÃæÉÏÍêµ°ÁË +13 ÇÒÌý»¢Ð¥ 2026-08-20 14/700 2026-08-25 09:10 by mrkang
[»ù½ðÉêÇë] ½¨Òé»ù½ð·¢²¼Ìáǰ¸ø³öÃ÷È·µÄʱ¼äµã +13 kulium 2026-08-21 16/800 2026-08-24 16:27 by superceng
[»ù½ðÉêÇë] ÈÃÎÒÖÐÒ»¸öÃæÉϰɣ¡ +13 ´óƼ1987 2026-08-20 16/800 2026-08-24 10:23 by ̫ɵÁË
[½Ìʦ֮¼Ò] Ìø²ÛºóÔÚÑÐÏîÄ¿Ôõô°ì£¿ +5 ¼òµ¥»¯xn 2026-08-22 10/500 2026-08-23 12:38 by ¼òµ¥»¯xn
[»ù½ðÉêÇë] ʱ¼ä´Á½ñÌ죬20ºÅ±äÁË +5 archvillain 2026-08-20 5/250 2026-08-22 06:12 by hui_daxiao
[»ù½ðÉêÇë] ʱ¼ä´ÁÓÖ±äÁË +13 wuchongjun 2026-08-20 19/950 2026-08-21 17:21 by ×Ïɼ´¼
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û