ããç±³ã®éãè¡šãã®ã«ããã€ãŠãç³ïŒããïŒããšãã容ç©ã®åäœã䜿ãããŠããŸãããä»ã§ãäžéšã®èŸ²æ¥æ©æ¢°ã«ã¯äœ¿ãããŠããåäœã§ãããäžè¬ã«ã¯äœ¿ãããªããªããŸããã1ç³ã¯ïŒïŒæïŒ100å=1000åã«çããããããã倧人äžäººã1幎éã«é£ã¹ãç±³ã®éã ã£ãããã§ããæ±æžæ代ã«äœ¿ãããŠãããç³é«ãã¯ãã©ãã ãã®äººãé€ãããšãã§ããããšããææšã ã£ãããã§ããéçå°åã®å®æ ã«è©³ããè€å±±æµ© æ°ïŒæç¶å¯èœãªå°å瀟äŒç·åç 究ææé·ïŒãããã®ãç³é«ãã«ã€ããŠ3æ28æ¥ä»ã®ãæ¥æ¬èŸ²æ¥æ°èã1é¢ã®ã³ã©ã ãè«ç¹ãã«æ¬¡ã®ããã«æžããŠããŸãã
ã
ïŒåç¥ïŒããããã¯ã倧ããææå šäœã埪ç°å瀟äŒãžãšè»¢æããæ代ã ãæ¥æ¬æ¿åºãé ãã°ããªãã2050幎ã«ãããè±ççŽ ç€ŸäŒã®å®çŸãè¡šæããããããŸã§ã®ãããªã䜿ãæšãŠãã®æ®ãããç£æ¥ã¯èš±ãããããã®åå°ã®æç¶å¯èœãªåŸªç°åãåãããæ代ãå°æ¥ããŠããã
ãæ±æžæ代ãå°åã®äººå£æ¶é€åã枬ãç©å·®ããšããŠãç³é«ãšãããã®ããã£ãã1人ãé€ãçç£åãäžç³ãšããŠãäž»é£ã®ç±³ãäžå¿ã«éèšãããæ±æžäžæã®1700幎代ååã«ã¯ãå šåœã§ã»ãŒ3000äžç³ã«éããŠããã
ããã®2020幎代ãåå°åã§ã21äžçŽã®ç³é«ã調ã¹ãå±éããŠãããã§ã¯ãªãããæµ·å€ããã®ãåãç©ã®è±ãããã«é Œããããã®åå°ã®åçå¯èœãªè³æºãšãšãã«ã®ãŒã§ã©ããããã®äººæ°ãæ¶é€å¯èœããç©ã¿äžããŠããã®ã ã蟲æ¥ã®ããæ¹ããååŠè¥æã«é Œãã®ã§ã¯ãªããåå ã§ããè¥ãªã©ã埪ç°ãããæ¹åŒãæãŸããã
ãå®ã¯ãéçãæ©ãããé²ãã äžåœå±±å°ã§ã¯ãæ¢ã«æ±æžæ代ã®ç³é«ã倧ããäžåã人å£ãšãªã£ãŠããã確ãã«å°ã£ãŠããçŸç¶ã¯å€ã ããããããã人å£æ¶é€ã®äœè£ã¯å¢ããŠããã
ãäœæ°ãè¡æ¿ãå°é家ãç·ãããã§ãå°å ã®ã21äžçŽã®ç³é«ããæããã«ããäŸãã°ãããã«ã¯2000åã®äººãæç¶å¯èœã«æ®ããåºåãããããšçºè¡šããçŸåšã®äººå£ã1000åã§ããã°ããå ç1000å宣èšããããã®ã ã人å£ãå¢ããã°ãããšãããã®ã§ã¯ãªãã確ããªæç¶å¯èœæ§ãåãããæ代ã ã
ãæ¥æ¬ã§ã¯éœåžéšã«äººå£ãéäžããå°æ¹ããã¯äººãã©ãã©ãåºãŠè¡ã£ãŠããŸããšããã®ããããŸã§ã®æµãã§ããããå°±è·å£ãããããããããšã䟿å©ããè¿œæ±ããããšãæ¶è²»ç掻ã享åããããšãªã©ãæŠåŸæ¥æ¬ã§åœããåã«æ±ããããŠããããšãšã¯éãããšã«çç®ããåŸæ¥ã¯äžäŸ¿ã ãšæãããŠããåå°ãæ®ããã®å ŽãšããŠéžã¶è¥ãäžä»£ã2010幎代以éå¢ããŠããŠããããšã¯ããããŸã§ãæ¥æ¬èŸ²æ¥æ°èãäŒããŠããŸãããå°çèŠæš¡ã®æç¶å¯èœæ§ãåé¡ãšãªã£ãŠããã ãã§ãªããã³ããçŠã®ããã«çªç¶è·ãšäœãŸãã倱ãå¯èœæ§ãæã€éœåžã®æ®ããã®å±ããã«æ°ã¥ã人ãå¢ããã§ãããããäœã®ããã«åãã®ããçããŠããã®ããšçåãæ±ãæ©ã人ãã©ãã©ãå¢ããã§ãããããã人ã®æµãã®éæµãããããã©ãã©ãèµ·ããŠããäºæããããŸããå®éã«ã2020幎åœå¢èª¿æ»ã«ãããšãéçå°åãšãããå±±ééšãé¢å³¶ãªã©ã®äžéšã§ã¯äººå£å¢ãèµ·ããŠããããšãè€å±±æ°ã¯ææããŠããŸãã
ãããã«ãäžçæ å¢ã®ã倧ããå€ããå§ããããšã§é£æäºæ ã«ã圱é¿ãåºå§ããŠããŸãããé£æèªçµŠæ¿çãæŸæ£ããæ¥æ¬ã®èããããããã ãã ãæããã«ãªã£ãŠããããšã§ãããããã®ãããªç¶æ³ã®äžã§ãè€å±±æ°ã®æå±ããã21äžçŽã®ç³é«ããšããèãæ¹ããèŠããšã第äžæ¬¡ç£æ¥ãåå°ãšãã人å£ã®å°ãªãå°åã¯ããããã®æ代ã«äººãããšãããã£ãŠæ®ãããå°ååãããããšã«ãªãããããæªæ¥ã«åžæãæãŠãåå°ã ãšå€ãã®äººãèãã䟡å€èŠ³ã®è»¢æãé²ãã§ããã®ã§ã¯ãªãããšæã£ãŠããŸãã
ã人å£æžå°ãæ¥æ¿ã«é²ãåæ¿ç·ã§ãããããã§çãŸãè²ã£ãåã©ããã¡ããã®åå°ã®è¯ãã«æ°ã¥ããŠããã«ãšã©ãŸããã§ããã°å°±èŸ²ããããšæãåãå°æ¥åºãŠããŠæ¬²ãããšé¡ããªããããã家ã§ã¯èŸ²æ¥ãéããŠããããã®èŠªåãšé¢ãã£ãŠããŸãã
ïŒåçã¯ãã家ã«ãããäžæåã§ãããã®å4æ¯åïŒ4æïŒãäžä¿µã«ãªããŸããããã¯è£æžããèªããšããæååŒæŸå幎äºæãã«è³Œå ¥ãšãªã£ãŠããŠããã®ä»£éã¯ãé¡åçŸäŒæŸåãã ãšããããšã§é«äŸ¡ãªãã®ã ã£ãããã§ãããã®ãããªäžæåã¯ãç§ã25幎åã«äžè³æã§åããŠæ®ãããå°åºã«ããå ±åäœæ¥å Žã§ã籟æºãããããšãã«äœ¿ã£ãŠããŠã籟æºæ©ã®äœ¿çšæã¯äžæãããããããšæ±ºããããŠããŸãããçŸåšã§ã¯ã容ç©ã§ã¯ãªãééã§æž¬ãã®ãäžè¬çã«ãªã£ããããäžæåã§æž¬ãããšã¯çããã®ã§ã¯ãªãããšæããŸãã