²é¿´: 2146  |  »Ø¸´: 1

phly

Ìú¸Ëľ³æ (СÓÐÃûÆø)

[ÇóÖú] Êýѧ½¨Ä£AÌâ¡°Ò»¿ÃÊ÷µÄÒ¶×ÓÓжàÖØ£¿¡±£¬Çó˼·£¬Çó¼¯Ë¼¹ãÒæ¡£

¸÷λ´óϺ£¬Ð¡³æÕâ´ÎÊýѧ½¨Ä£ÃÀÈüÑ¡×öAÌ⣬µ«Ë¼Â·ºÍרҵ±³¾°²»ÉõÃ÷ÁË£¬ÏÖ½«ÌâĿճÌùÈçÏ£¬¾´Çë¸÷λ´óϺ²»Áߴͽ̣¬¶àлÁË

ÖÐÎÄ·­Ò룺
   ¡°Ò»¿ÃÊ÷µÄÒ¶×ÓÓжàÖØ£¿¡±ÔõôÄܹÀ¼ÆÊ÷µÄÒ¶×Ó£¨»òÕßÊ÷µÄÈÎºÎÆäËü²¿·Ö£©µÄʵ¼ÊÖØÁ¿£¿ÔõÑù¶ÔÒ¶×Ó½øÐзÖÀࣿ½¨Á¢Ò»¸öÊýѧģÐÍÀ´¶ÔÒ¶×Ó½øÐÐÃèÊöºÍ·ÖÀࡣģÐÍÒª¿¼ÂǺͻشðÏÂÃæµÄÎÊÌ⣺
     • ΪʲôҶ×Ó¾ßÓи÷ÖÖÐÎ×´£¿
     • Ò¶×ÓÖ®¼äÊÇÒª½«Ïà»¥ÖØµþµÄ²¿·Ö×îС»¯£¬ÒÔ±ã¿ÉÒÔ×î´óÏ޶ȵĽӴ¥µ½Ñô¹âÂð£¿Ê÷Ò¶µÄ·Ö²¼ÒÔ¼°Ê÷¸ÉºÍ֦辵ÄÌå»ýÓ°ÏìÒ¶×ÓµÄÐÎ×´Âð£¿
     • ¾ÍÂÖÀªÀ´½²£¬Ò¶ÐΣ¨Ò»°ãÌØÕ÷£©ÊǺÍÊ÷µÄÂÖÀªÒÔ¼°·ÖÖ¦½á¹¹ÓйØÂð£¿
     • Ä㽫ÈçºÎ¹À¼ÆÒ»¿ÃÊ÷µÄÒ¶×ÓÖÊÁ¿£¿Ò¶×ÓµÄÖÊÁ¿ºÍÊ÷µÄ³ß´çÌØÕ÷£¨°üÀ¨ºÍÍâÐÎÂÖÀªÓйصĸ߶ȡ¢ÖÊÁ¿¡¢Ìå»ý£©ÓÐÁªÏµÂð£¿
³ýÁËÄãµÄÒ»Ò³ÕªÒªÒÔÍ⣬¸ø¿ÆÑ§ÔÓÖ¾µÄ±à¼­Ð´Ò»·âÐÅ£¬²ûÊöÄãµÄÖ÷Òª·¢ÏÖ¡£

Ó¢ÎÄÔ­ÎÄ£º
PROBLEM A: The Leaves of a Tree
"How much do the leaves on a tree weigh?" How might one estimate the actual weight of the leaves (or for that matter any other parts of the tree)? How might one classify leaves? Build a mathematical model to describe and classify leaves. Consider and answer the following:
• Why do leaves have the various shapes that they have?
• Do the shapes ¡°minimize¡± overlapping individual shadows that are cast, so as to maximize exposure? Does the distribution of leaves within the ¡°volume¡± of the tree and its branches effect the shape?
• Speaking of profiles, is leaf shape (general characteristics) related to tree profile/branching structure?
• How would you estimate the leaf mass of a tree? Is there a correlation between the leaf mass and the size characteristics of the tree (height, mass, volume defined by the profile)?
In addition to your one page summary sheet prepare a one page letter to an editor of a scientific journal outlining your key findings.
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

darkcc

гæ (³õÈëÎÄ̳)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
phly(½ð±Ò+10): ¡ï¡ï¡ïºÜÓаïÖú 2012-02-13 02:21:23
¶Ôͬһ¿ÃÊ÷£¬Ô½¸ßµÄλÖÃÉϵÄÒ¶×Ó£¬µ¥Î»Ãæ»ýÒ¶ÖØÓ¦¸ÃÔ½¸ß£¬Ò²¾ÍÊÇËùνµÄLeaf mass per area £¨LMA£©¡£

Ó¦¸Ã°´ÕÕµ¥Î»Í¶Èë²ú³öÀ´¿¼ÂÇ£¬Ò²¾ÍÊÇ×îÓÅ»¯Ò¶Æ¬µÄÐÎ×´£¬Ò¶Æ¬µÄÇã½Ç£¨ÒÔÉÏÁ½µãÓ°Ï쵽ҶƬ½ÓÊÕ¶àÉÙÑô¹â£¬ÕâÊDzú³ö£©£¬Ò¶Æ¬µÄλÖã¨Î»ÖÃÔ½¸ß£¬Ñø·Ö¾ÍÒªÊäË͸ü´ó¾àÀ룩ºÍÖØÁ¿£¨ÕâÊÇͶÈ룩£¬Ê¹µÃ²ú³ö-ͶÈë×î´ó»¯¡£
2Â¥2012-02-13 00:03:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ phly µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 294Çóµ÷¼Á²ÄÁÏÓ뻯¹¤×¨Ë¶ +8 ݤÎÉ­ÁÖ 2026-03-18 8/400 2026-03-19 10:26 by ÊÇѼѼѽѽ
[½Ìʦ֮¼Ò] ½¹ÂÇ +9 Ë®±ùÔÂÔÂÒ°Íà 2026-03-13 13/650 2026-03-19 09:50 by otani
[¿¼ÑÐ] 285»¯¹¤Ñ§Ë¶Çóµ÷¼Á£¨081700£© +11 ²ñ¿¤Ã¨_ 2026-03-12 11/550 2026-03-19 09:37 by laoshidan
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤µ÷¼Á 324·Ö +9 llllkkkhh 2026-03-18 9/450 2026-03-19 07:40 by BruceLiu320
[¿¼ÑÐ] 0703»¯Ñ§ 305Çóµ÷¼Á +4 FY_yy 2026-03-14 4/200 2026-03-19 05:54 by anny19840123
[¿¼ÑÐ] 354Çóµ÷¼Á +4 Tyoumou 2026-03-18 7/350 2026-03-18 21:45 by Tyoumou
[¿¼ÑÐ] 08¹¤¿Æ 320×Ü·Ö Çóµ÷¼Á +5 À滨çóÍí·ç 2026-03-17 5/250 2026-03-18 14:49 by haxia
[¿¼ÑÐ] 312Çóµ÷¼Á +8 İå·Ï£ 2026-03-16 9/450 2026-03-18 12:39 by Linda Hu
[¿¼ÑÐ] 288Çóµ÷¼Á£¬Ò»Ö¾Ô¸»ªÄÏÀí¹¤´óѧ071005 +4 ioodiiij 2026-03-17 4/200 2026-03-18 12:36 by Linda Hu
[¿¼ÑÐ] 280Çóµ÷¼Á +6 ¹¾ààÏþÏþ 2026-03-18 7/350 2026-03-18 11:25 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 265Çóµ÷¼Á +3 ÁºÁºÐ£Ð£ 2026-03-17 3/150 2026-03-18 09:12 by zhukairuo
[¿¼ÑÐ] 334Çóµ÷¼Á +3 Ö¾´æ¸ßÔ¶ÒâÔÚ»úÐ 2026-03-16 3/150 2026-03-18 08:34 by lm4875102
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤Çóµ÷¼Á +6 Ϊѧ666 2026-03-16 6/300 2026-03-17 20:15 by peike
[¿¼ÑÐ] ²ÄÁÏר˶326Çóµ÷¼Á +6 Ä«ìÏæ¦Ý· 2026-03-15 7/350 2026-03-17 17:10 by ruiyingmiao
[¿¼ÑÐ] 302Çóµ÷¼Á +4 С¼Öͬѧ123 2026-03-15 8/400 2026-03-17 10:33 by С¼Öͬѧ123
[¿¼ÑÐ] ÖпÆÔº²ÄÁÏ273Çóµ÷¼Á +4 yzydy 2026-03-15 4/200 2026-03-16 15:59 by Gaodh_82
[¿¼ÑÐ] 0703 ÎïÀí»¯Ñ§µ÷¼Á +3 ÎÒ¿ÉÒÔÉϰ¶µÄ¶Ô 2026-03-13 5/250 2026-03-16 10:50 by ÎÒ¿ÉÒÔÉϰ¶µÄ¶ÔÂ
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤ 323 Ó¢Ò»+Êý¶þ+Îﻯ£¬Ò»Ö¾Ô¸£º¹þ¹¤´ó ±¾È˱¾¿ÆË«Ò»Á÷ +4 ×ÔÓɵÄ_·ÉÏè 2026-03-13 5/250 2026-03-14 19:39 by hmn_wj
[¿¼ÑÐ] ¸´ÊÔµ÷¼Á +3 ºôºô£¿~+123456 2026-03-14 3/150 2026-03-14 16:53 by WTUChen
[¿¼ÑÐ] 081200-11408-276ѧ˶Çóµ÷¼Á +3 ´Þwj 2026-03-12 4/200 2026-03-12 19:33 by Çóµ÷¼Ázz
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û