±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 553  |  »Ø¸´: 2
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

Æð¸öÃûÕæ·Ñ¾¢

гæ (³õÈëÎÄ̳)

[ÇóÖú] Ó¢Ò뺺£¬Ð»Ð»

where g is the collection of all sites connected to X through drainage
directions. The theorem predicts that, for efficient drainage basins, a
log-log plot of C versus A should have a slope of 3/2 because D = 2
and river networks in nature are known to be efficient and
directed. Our observational data (Fig. 2) are found to agree with
the predictions over five decades of scales.
Our general results should be applicable to a wide variety of
distributed networks including the flow of water, blood, sewage,
food, air and electrical currents. Even though the specific details
vary significantly, the novel behaviour built into efficient transportation
networks provides a unified framework underlying the
allometric scaling of diverse systems.

» ²ÂÄãϲ»¶

ɶ¶¼²»»á
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

terry_well

ÈÙÓþ°æÖ÷ (ÖªÃû×÷¼Ò)

Ц°¾½¬ºý¡ª¡ªÂúÄÔ½¬ºý

ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
Mally89(½ð±Ò+1): ¸ÐлӦÖú£¡~ 2012-03-05 16:50:07
Æð¸öÃûÕæ·Ñ¾¢(½ð±Ò+15, ·­ÒëEPI+1): ¡ï¡ï¡ïºÜÓаïÖú 2012-03-05 22:01:07
sltmac(½ð±Ò+10): 2012-03-08 09:22:38
ÆäÖУ¬gÊÇͨ¹ýÅÅË®·½ÏòÁ¬½Óµ½XµÄËùÓÐÍøµãµÄ¼¯ºÏ¡£¾ÝÓйض¨ÀíµÄÔ¤²â£¬¸ßЧµÄÁ÷Óò£¬ÓÉÓÚD=2£¬C¶ÔAÈ¡¶ÔÊýºó×÷ͼºóÏßÐԻعéµÄбÂÊΪ3/2£¬Ò»°ãÈÏΪºÓÍøµÄÐÔÖÊÊǸßЧºÍ¶¨ÏòµÄ¡£ÎÒÃǵĹ۲âÊý¾Ý£¨Í¼2£©Ó볬¹ýÎåÊ®ÄêÖ®ÄÚµÄÔ¤²âÊý¾ÝÒ»Ö¡£ÎÒÃÇÒ»°ãµÄ½á¹ûÓ¦¸ÃÊÇÊÊÓÃÓÚ¸÷ÖÖ¸÷ÑùµÄ·Ö²¼Ê½Á÷ÌåÍøÂ磬°üÀ¨Ë®¡¢ÑªÒº¡¢ÎÛË®´¦Àí¡¢Ê³Æ·¡¢¿ÕÆøºÍµçÁ÷µÄÁ÷¶¯µÈ¡£¾¡¹Ü¾ßÌåµÄϸ½Ú²î±ðºÜ´ó£¬¾ß±¸ÐÂÓ±ÌØÐԵĸßЧ½»Í¨ÍøÂç¿ÉΪÒìËÙÉú³¤µÄ²»Í¬ÏµÍ³ÔÚÏàͬ·¶Î§ÄÚÌṩһ¸öͳһµÄ¿ò¼Ü¡£
ÍâÐУ¬¹©²Î¿¼¡£
Ç©Ãû:Ó¢ÎÄÃû¡°Terry¡±,EC°æ×¨Óã»ÖÐÎÄÃû¡°½¬ºý¸ç¡±£¬¹àˮרÓã¬Ð»Ð»ºÏ×÷£¡
2Â¥2012-03-04 17:46:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Æð¸öÃûÕæ·Ñ¾¢

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
Â¥: Originally posted by terry_well at 2012-03-04 17:46:17:
ÆäÖУ¬gÊÇͨ¹ýÅÅË®·½ÏòÁ¬½Óµ½XµÄËùÓÐÍøµãµÄ¼¯ºÏ¡£¾ÝÓйض¨ÀíµÄÔ¤²â£¬¸ßЧµÄÁ÷Óò£¬ÓÉÓÚD=2£¬C¶ÔAÈ¡¶ÔÊýºó×÷ͼºóÏßÐԻعéµÄбÂÊΪ3/2£¬Ò»°ãÈÏΪºÓÍøµÄÐÔÖÊÊǸßЧºÍ¶¨ÏòµÄ¡£ÎÒÃǵĹ۲âÊý¾Ý£¨Í¼2£©Ó볬¹ýÎåÊ®ÄêÖ®ÄÚµÄ ...

·Ç³£¸Ðл
ɶ¶¼²»»á
3Â¥2012-03-05 21:59:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ Æð¸öÃûÕæ·Ñ¾¢ µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ¹¤¿Æ341·Öµ÷¼Á +3 Âå¶àÂÞ 2026-04-03 3/150 2026-04-03 14:20 by 1753564080
[¿¼ÑÐ] 266Çóµ÷¼Á +3 08µçÆø¹¤³Ì 2026-04-03 3/150 2026-04-03 14:05 by 1753564080
[¿¼ÑÐ] 325·Ö»¯Ñ§µ÷¼Á +5 15771691647 2026-04-02 5/250 2026-04-03 09:58 by ChemPharm
[¿¼ÑÐ] 338Çóµ÷¼Á£¬Ò»Ö¾Ô¸ÄÜÔ´¶¯Á¦£¬ÍâÓïÊÇÈÕÓï203 +5 zzz£¬£¬r 2026-04-02 5/250 2026-04-03 09:45 by À¶ÔÆË¼Óê
[¿¼ÑÐ] һ־Ըɽ¶«´óѧ»¯Ñ§Ó뻯¹¤Ñ§Ôº²ÄÁÏÓ뻯¹¤×¨Ë¶£¬360·ÖÇóµ÷¼Á +4 ²»Ô¸Í¸Â¶ÐÕÃûµÄË 2026-04-02 4/200 2026-04-03 09:29 by ÒÅÍüÏûʧµÄž™
[¿¼ÑÐ] ²ÄÁÏר˶322·Ö +10 ¹þ¹þ¹þºðºðºð¹þ 2026-04-02 10/500 2026-04-02 21:46 by dongzh2009
[¿¼ÑÐ] 366Çóµ÷¼ÁÒ»Ö¾Ô¸¶«±±´óѧ +8 ÔËÆøÀ´µÃÈôÓÐËÆÎ 2026-04-02 8/400 2026-04-02 21:39 by dongzh2009
[¿¼ÑÐ] ²ÄÁÏ0856 Ó¢Ò»Êý¶þ 323 Çóµ÷¼Á +10 Ô¬sy 2026-04-01 10/500 2026-04-02 19:52 by xingsh
[¿¼ÑÐ] Çóµ÷¼Á 302·Ö³õÊÔ 0854 +5 Áæ¿ÉÀÖ 2026-04-02 5/250 2026-04-02 17:53 by ±ÊÂä½õÖÝ
[¿¼²©] ²ÄÁϹ¤³Ìרҵ˶ʿÉ격 +3 ÷ëÕýÓî 2026-03-30 3/150 2026-04-02 15:04 by greychen00
[¿¼ÑÐ] 348Çóµ÷¼Á +6 ÎâÑå׿24k 2026-04-02 6/300 2026-04-02 14:07 by ¸øÄãÄã×¢ÒâÐÝÏ¢
[¿¼ÑÐ] 266·Ö£¬Ò»Ö¾Ô¸µçÆø¹¤³Ì£¬±¾¿Æ²ÄÁÏ£¬Çó²ÄÁÏרҵµ÷¼Á +10 ÍÛºôºßºôºß 2026-04-01 11/550 2026-04-02 11:31 by lnilvy
[¿¼ÑÐ] 085410 Ò»Ö¾Ô¸211 22408·ÖÊý359Çóµ÷¼Á +3 123456789qw 2026-03-31 4/200 2026-04-02 00:06 by ÒåÎÄwang
[¿¼ÑÐ] 296Çóµ÷¼Á +4 Íô£¡£¿£¡ 2026-03-31 7/350 2026-04-01 22:04 by ¿Í¶ûÃÀµÂ
[¿¼ÑÐ] 292Çóµ÷¼Á +17 ľ³æer12138 2026-04-01 17/850 2026-04-01 21:37 by Æß¶È²»ÐÅÈÎ
[¿¼ÑÐ] 070300»¯Ñ§279Çóµ÷¼Á +15 ¹þ¹þ¹þ^_^ 2026-03-31 17/850 2026-04-01 21:37 by ¸øÄãÄã×¢ÒâÐÝÏ¢
[¿¼ÑÐ] 310·ÖÇóµ÷¼Á +4 ³É¹¦Éϰ¶wang 2026-04-01 4/200 2026-04-01 20:35 by liu823948201
[¿¼ÑÐ] 274Çóµ÷¼Á +6 xiao°®Í¬Ñ§ 2026-03-30 6/300 2026-03-31 10:04 by cal0306
[¿¼ÑÐ] 0703 »¯Ñ§ Çóµ÷¼Á£¬Ò»Ö¾Ô¸É½¶«´óѧ 342 ·Ö +7 Shern¡ª- 2026-03-28 7/350 2026-03-30 16:31 by nothingͶ¸åÖÐ
[¿¼ÑÐ] 356Çóµ÷¼Á +3 gysy?s?a 2026-03-28 3/150 2026-03-29 00:33 by 544594351
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û