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(Ãí2) ¹ñÏ¢¤Î¿Í¸ýÅý·×¤Ë¤è¤ë¤È1800ǯ¤Ë10²¯¿Í¤Ç¤¢¤Ã¤¿À¤³¦¿Í¸ý¤Ï¤½¤Î¸å,»Ø¿ô´Ø¿ôŪ¤ËÁý²Ã¤·,2023ǯ¤Ë¤Ï80²¯¿Í¤È¤Ê¤ê,2086ǯ¤Ë104²¯¿Í¤ò¥Ô¡¼¥¯¤Ë¸º¾¯¤Ëž¤¸,2450ǯº¢¤Ë¤Ï10²¯¿ÍÄøÅ٤ˤʤë¤Èͽ¬¤µ¤ì¤Æ¤¤¤ë.¤½¤·¤Æ,º£À¤µªÃæ¤ËÀ¤³¦¤Î¿Í¸ý¤¬¥Ô¡¼¥¯¤ò·Þ¤¨¤ë²ÄǽÀ¤Ï³ÎΨ80¥Ñ¡¼¥»¥ó¥È¤È¿äÄꤵ¤ì¤Æ¤¤¤ë[5],[6].
(Ãí3)²ÈÃܲ½¤¬²Äǽ¤Ë¤Ê¤ëÆÃħ¤È¤·¤Æ¤Ï,¹¶·âÀ¤ÎÄã²¼,½¾½ç²½¤È¶¨Ä´À,ÈË¿£´ÉÍý¤Î¤·°×¤µ¤Ê¤É¤¬¤¢¤ë.¤Þ¤º¤Ï¤½¤Îưʪ¤¬,⼈´Ö¤Î¤¹¤°¤½¤Ð¤ÇÀ¸³è¤¹¤ë¤è¤¦¤Ë¤Ê¤ë¼«È¯Åª¤Ê⼈Æë¤ì¡ÊǽưŪ½¾½çÀ¡Ë¤ò¤â¤Ä¤³¤È¤¬Âè°ìÊâ¤È¤Ê¤ë.¤ª¤½¤é¤¯ÌîÀ¸¤Î¥ª¥ª¥«¥ß¤ËǽưŪ½¾½çÀ¤ò»ý¤Ä¤â¤Î¤¬¸½¤ì¤Æ,Áê¸ß´Ø·¸¡Ê¼«Á³ÁªÂò¤È⼈°ÙÁªÂò¡Ë¤Ë¤è¤Ã¤Æ¥ª¥ª¥«¥ß¥¤¥Ì¤¬À¸¤¸¤¿¤Î¤¬ºÇ½é¤Î´Ø·¸¹½ÃÛ¤À¤Ã¤¿¤À¤í¤¦.Åö½é¤Ï¼íÎĤǤζ¥¹ç´Ø·¸¤Ë¤¢¤Ã¤¿¤â¤Î¤¬,Êâ¤ß´ó¤ê¤È¤ª¤³¤Ü¤ìÆþ¼ê¤Ê¤É¤Ë¤è¤ëÀܶá,±ÂÉÕ¤±¤È¤È¤â¤Ë¶¨Ä´Åª¤Ê¹ÔÆ°¤¬À¸¤¸¤Æ,¼íÎĤÎÊä½õÌò¤Î¤è¤¦¤Ê´Ø·¸¤¬À¸¤Þ¤ì¤¿¤È¹Í¤¨¤é¤ì¤Æ¤¤¤ë. ³Íʪ¤ò¤¤¤ÁÁ᤯¸«¤Ä¤±¤ÆÄɤ¤¤Ä¤á¤ë¥¤¥Ì¤Î¤ª¤«¤²¤Ç,⼈´Ö¤Î¼íÎĤâ½õ¤±¤é¤ì¤Æ,Áê¸ß¤Ë¥á¥ê¥Ã¥È¤È¤Ê¤ë̪·î¤Î´Ø·¸¤¬ÃÛ¤«¤ì¤¿.¤³¤¦¤·¤¿¶¦´¶ÎϤÈŬ±þǽÎϤγÈÂç¤Ë¤è¤ê¥Ò¥È¤Î¤µ¤é¤Ê¤ëÈ˱ɤؤȤĤʤ¬¤Ã¤¿¤È¹Í¤¨¤é¤ì¤ë.¥ª¥ª¥«¥ß¤¬²ÈÃܲ½¡Ê¥ª¥ª¥«¥ß¥¤¥Ì¡Ë¤µ¤ì¤¿·ÁÀפ¬3ËüǯÁ°º¢¤Ë¤ß¤Ä¤«¤Ã¤¿¤È¤µ¤ì¤ë. ²ÈÃܲ½¤Ë¤Ä¤¤¤Æ¸¦µæ¤Ç¤Ï,¥í¥·¥¢¤Î¥ß¥È¥ê¡¼·¥³¥ó¥¹¥¿¥ó¥Á¥Î¥ô¥£¥Ã¥Á·¥Ù¥ê¥ã¡¼¥¨¥Õ(§¥§Þ§Ú§ä§â§Ú§Û §¬§à§ß§ã§ä§Ñ§ß§ä§Ú§ß§à§Ó§Ú§é §¢§Ö§Ý§ñ§Ö§Ó;1917-1985ǯ)Åù¤¬1950ǯÂå¸åȾ¤«¤éĹǯ¤Ë¤ï¤¿¤ê»î¤ß¤¿»ô°é¼Â¸³¤Ç¶½Ì£¿¼¤¤»ö¼Â¤¬¼¨¤µ¤ì,À¤³¦Åª¤ËÃíÌܤµ¤ì¤¿.¹¶·âŪ¤Ê¥®¥ó¥®¥Ä¥Í(Vulpes vulpes)¤ÇÈæ³ÓŪ½¾½ç¤Ê¤â¤Î¤À¤±¤òÁª¤ó¤ÇŤ¤À¤Âå¤Ë¤ï¤¿¤Ã¤Æ»ô°é¤·¤¿·ë²Ì¡Ê¿ô½½À¤Âå,Ìó50ǯ´Ö¡Ë,½¾½ç¤Ê¥¥Ä¥Í¤ËÊѿȤ·¤¿¤È¤µ¤ì¤ë.ÁªÂò¸òÇÛ¤·¤¿¥¥Ä¥Í¤Ï,⼈¤ò¶²¤ì¤º,¿¬Èø¤ò¿¶¤Ã¤Æ¤Ê¤Ä¤,¸«¤«¤±¤âÌÓÈé¤Î¿§¤¬ÊѤï¤ê,¼ª¤¬¿â¤ì¤Æ¤·¤Ã¤Ý¤¬´¬¤¤¢¤¬¤ë¤è¤¦¤Ë¤Ê¤Ã¤¿.¥¥Ä¥Í¤È¥ª¥ª¥«¥ß¤Ï,Ʊ¤¸¥¤¥Ì²Ê¤ÎÃç´Ö¤Ç¤¢¤ê,¤Þ¤µ¤Ë¥¤¥Ì¤Î²ÈÃܲ½¤ÎÍͻҤ¬ºÆ¸½¤µ¤ì¤¿¤«¤Î¤è¤¦¤Ê»ô°é¼Â¸³¤Ç¤¢¤Ã¤¿¤È¤µ¤ì¤¿.¤·¤«¤·,¤½¤Î¸å,Èà¤é¤¬»È¤Ã¤¿¥¥Ä¥Í¤Î°ìÉô¤Ë,¿Í´Ö¤Ë¤è¤Ã¤Æ»ô°é¤µ¤ì¤¿¥¥Ä¥Í¤¬Æþ¤Ã¤Æ¤¤¤¿¤È¤Î»ØŦ¤â¤µ¤ì¤Æ¤¤¤ë[8].
(Ãí4) ¥Í¥ª¥Æ¥Ë¡¼¤Ï¡ÖÍÄ·ÁÀ®½Ï¡×¡ÖÍÄÂÖÀ®½Ï¡×¤Ê¤É¤ÈÌõ¤µ¤ì,À¸Êª³ØŪ¤Ë¤Ï,ÍÄÀ¸¤äÂÛ»ù¤Ë¤ß¤é¤ì¤ëÆÃħ¤¬À®ÂΤˤʤäƤâ»Ä¤Ã¤Æ¤¤¤ë¤³¤È¤ò¤¤¤¦.¤½¤·¤ÆÀ¸Êª³Ø¤ÎÀ¤³¦¤Ç¤Ï,¥Ò¥È¤â¥Í¥ª¥Æ¥Ë¡¼¤ÎÆÃħ¤ò»ý¤ÄÀ¸¤Êª¤À¤È»ØŦ¤µ¤ì¤Æ¤¤¤ë.¥Ò¥È¤ÎÀÖ¤Á¤ã¤ó¤¬,¥Á¥ó¥Ñ¥ó¥¸¡¼¤ÎÀÖ¤Á¤ã¤ó¤ÈƱ¤¸¤°¤é¤¤¤Îȯã¾õÂÖ¤ÇÀ¸¤Þ¤ì¤Æ¤¯¤ë¤¿¤á¤Ë¤Ï,2ǯ¤Û¤É¤òÊì¿Æ¤Î¤ªÊ¢¤ÎÃæ¤Ç²á¤´¤µ¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤.¤·¤«¤·¤½¤ì¤Ç¤ÏÂΤ¬Â礤¯¤Ê¤ê¤¹¤®¤Æ»º¤á¤Ê¤¯¤Ê¤Ã¤Æ¤·¤Þ¤¦.¤è¤Ã¤Æ¡ÖÁỺ¡×¤Î·Á¤ÇÃÂÀ¸¤·,À¸¸å¤Î1ǯ´Ö¤Ï,¼Â¤ÏÂÛ»ù¤Î±äĹ¤È¤¤¤¦¹Í¤¨Êý¤Ç¤¢¤ë.¥Ò¥È¤¬¼«Ê¬¤Ç±Â¤ò¼è¤ì¤ë¤è¤¦¤Ë¤Ê¤ë¡ÊÆȤêΩ¤Á¤Ç¤¤ë¡Ë¤Þ¤Ç¤Î´ü´Ö¤¬Ä¹¤¤¤Î¤Ï,¤½¤Î¤¿¤á¤Ç¤¢¤ë[10].¿Ê²½ÏÀ¤Ë¤ª¤¤¤Æ¥Í¥ª¥Æ¥Ë¡¼¤Ï,¿Ê²½¤Î²áÄø¤Ë½ÅÍפÊÌò³ä¤ò²Ì¤¿¤¹¤È¤¤¤¦À⤬¤¢¤ë.¤Ê¤¼¤Ê¤é,¥Í¥ª¥Æ¥Ë¡¼¤À¤ÈǾ¤äÂΤÎȯ㤬ÃÙ¤¯¤Ê¤ëÂå¤ï¤ê,³Æ¼ï´ï´±¤ÎÆü첽¤ÎÄøÅÙ¤¬Ä㤯,Æü첽¤Î¿Ê¤ó¤À¾¤ÎÀ¸Êª¤ÎÀ®Âδﴱ¤è¤ê¤âŬ±þ¤ËÂФ¹¤ë²ÄÁºÀ¤¬¹â¤¤.¤½¤Î¤³¤È¤ÇÀ®ÂΤˤʤë¤Þ¤Ç¤Ë´Ä¶¤ÎÊѲ½¤¬¤¢¤Ã¤Æ¤â½ÀÆð¤ËŬ±þ¤¹¤ë¤³¤È¤¬¤Ç¤¤ë¤È¤µ¤ì¤ë[11].
(Ãí5)Ãæ¹ñ²Ê³Ø±¡Âç³Ø¤Î¥ê¡¦¥Ï¥¤¥Ú¥ó»á¤é¤Ï,FitCoalË¡¡Êfast infinitesimal time coalescent process¡Ë¤È¸Æ¤Ð¤ì¤ë¿·¤·¤¤Ê¬ÀϤòÍѤ¤¤·¤Æ, À¤³¦³Æ¹ñ¤«¤é½¸¤á¤¿¸½Âå¿Í3154¿Í¡Ê¥¢¥Õ¥ê¥«·Ï10¥°¥ë¡¼¥×¤ª¤è¤ÓÈ󥢥եꥫ·Ï40¥°¥ë¡¼¥×¡Ë¤Î¥²¥Î¥à¥Ç¡¼¥¿¤ò²òÀϤ·,°äÅÁ»Ò¤ò²áµî¤Ë¤µ¤«¤Î¤Ü¤Ã¤¿¤È¤³¤í,¤ª¤è¤½93Ëü¡Á81Ëü3000ǯ¤Û¤ÉÁ°,¸½ºß¤Î»ä¤¿¤Á¤Ë¤Ï¤¢¤ë°äÅÁŪ¿ÍÍÀ¤¬,ºÇÂç65.85¡ó¤â¼º¤ï¤ì¤Æ¤¤¤¿¤È¸À¤¦Êó¹ð¤ò¤·¤Æ¤¤¤ë.¤³¤Î°äÅÁŪ¥Ü¥È¥ë¥Í¥Ã¥¯¡Ê¼ï¤Î¿ô¤¬Ãø¤·¤¯¾¯¤Ê¤¯¤Ê¤ë¸½¾Ý¡Ë¤Ê¤É¤«¤é¿ä¬¤¹¤ë¤È,10Ëü¿Í¶á¤¯¤¤¤¿¿ÍÎà¤Î¿Í¸ý¤¬¤ï¤º¤«1280¿Í¤Ë¤Þ¤Ç·ã¸º¤·¤Æ¤¤¤¿¤È¹Í¤¨¤é¤ì¤ë¤È¤¤¤¦[12],[13].
(Ãí6) ¥Þ¥ë¥µ¥¹¤Î櫤Ï,¥È¥Þ¥¹¡¦¥í¥Ð¡¼¥È¡¦¥Þ¥ë¥µ¥¹¤Ë¤è¤Ã¤Æ½Ò¤Ù¤é¤ì¤¿À¯¼£¡¦·ÐºÑ¤Ë´Ø¤¹¤ë»×ÁۤǤ¢¤ê,»º¶È³×Ì¿´ü¤ËŸ³«¤µ¤ì¤¿.¤½¤ÎÃø½ñ¤Ç¤Ï,ÍÞÀ©¤µ¤ì¤Ê¤¤¿Í¸ýÁý²Ã¤¬»Ø¿ô´Ø¿ôŪ¡ÊMalthusian growth model¡Ë¤Ë¤Ê¤ë°ìÊý¤Ç,¿©ÎÁ¶¡µë¤ÎÁý²Ã¤ÏÀþ·Á¡Êlinear¡ËŪ¤Ë¤Ê¤ë¤³¤È¤¬Í½Â¬¤µ¤ì¤Æ¤ª¤ê,¤¤¤«¤Ë¤·¤Æ¥Þ¥ë¥µ¥¹¤Î¥«¥¿¥¹¥È¥í¥Õ¥£¡¼¤Ë»ê¤ë¤«¤¬½Ò¤Ù¤é¤ì¤Æ¤¤¤ë[14],[15].
(Ãí7) ¸ÅÂô¹Í´[8]¤Ï, ¹¶·âÀ¤Ë¤Ï°Ê²¼¤Î2¤Ä¤¬¤¢¤ë¤È¤·¤Æ¤¤¤ë.
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[1] ¼¾å¿ð¾Í, 2024ǯ¤Î´³»Ù¡Ö¹Ãä¡×¤Ï¤É¤ó¤Êǯ¡© ½Õ¤ÎÆüº¹¤·¤¬Ê¿Åù¤ËÃí¤®Â礤ÊÀ®Ä¹¤òÂ¥¤¹Ç¯¤Ë, LIFULL HOME'S PRESS,¡¡https://www.homes.co.jp/cont/press/reform/reform_01322/ ,2024.12.25¥¢¥¯¥»¥¹
[2] ÀаæϹî, 100ǯ¤Ë°ìÅ٤ΰÕÌ£¤ò¹Í¤¨¤ë¡½ÂºÉٻΤΰζȤ«¤é¤Îµ¤¤Å¤¡½,¥³¥é¥à KAZU'S VIEW,2024ǯ03·î, https://ishii-kazu.com/column.cgi?id=249¡¡, 2024.12.25¥¢¥¯¥»¥¹
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¿Í´Ö³Ø¤Î¹½Ãۤ˸þ¤±¤Æ(4)-, Áí¹ç¿Í´Ö³Ø,Âè17´¬,pp.61-77, https://www.jstage.jst.go.jp/article/synanthro/17/0/17_61/_pdf/-char/ja ,2024.1
2.19¥¢¥¯¥»¥¹
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[16] ÅÏÉôÂÙÀ®,¡ÖAI¤Ï°ÛÀ±¿Í¤ÎÃÎÀ¡×-ů³Ø³¦¤Î¼ã¤µð¿Í¤¬ÌĤ餹·Ù¾â-¥Æ¥¯¥Î¿·À¤¥¤¥ó¥¿¥Ó¥å¡¼¡¡¥Ü¥óÂç³Ø¤Î¥Þ¥ë¥¯¥¹¡¦¥¬¥Ö¥ê¥¨¥ë¶µ¼ø,¥Æ¥¯¥Î¿·À¤,2023ǯ7·î3Æü,ÆüËܷкѿ·Ê¹, https://www.nikkei.com/article/DGXZQOUF162LY0W3A610C2000000/ ,2024.12.25¥¢¥¯¥»¥¹
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