及密云县(xian)(xian)西(xi)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)部至怀(huai)柔东(dong)部一带，年(nian)(nian)(nian)辐(fu)射(she)量(liang)均(jun)(jun)在(zai)(zai)(zai) 135千(qian)卡/厘(li)米(mi)(mi)以(yi)上；低值区(qu)(qu)(qu)(qu)(qu)(qu)(qu)位于房山(shan)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)的(de)(de)霞云岭(ling)附近，年(nian)(nian)(nian)辐(fu)射(she)量(liang)为(wei)112千(qian)卡/厘(li)米(mi)(mi)。北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)年(nian)(nian)(nian)平(ping)均(jun)(jun)日照(zhao)(zhao)(zhao)(zhao)时(shi)(shi)(shi)数(shu)(shu)在(zai)(zai)(zai)2000-2800小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)之间。大(da)部分(fen)地(di)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)在(zai)(zai)(zai)2600小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)左右。年(nian)(nian)(nian)日照(zhao)(zhao)(zhao)(zhao)分(fen)布(bu)与太阳辐(fu)射(she)的(de)(de)分(fen)布(bu)相(xiang)一致，最(zui)(zui)(zui)大(da)值在(zai)(zai)(zai)延庆县(xian)(xian)和(he)古北(bei)(bei)(bei)(bei)(bei)(bei)(bei)口，为(wei)2800小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)以(yi)上，最(zui)(zui)(zui)小(xiao)(xiao)(xiao)(xiao)值分(fen)布(bu)在(zai)(zai)(zai)霞云岭(ling)，日照(zhao)(zhao)(zhao)(zhao)为(wei)2063小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)。全(quan)年(nian)(nian)(nian)日照(zhao)(zhao)(zhao)(zhao)时(shi)(shi)(shi)数(shu)(shu)以(yi)春(chun)季(ji)(ji)最(zui)(zui)(zui)多(duo)，月(yue)日照(zhao)(zhao)(zhao)(zhao)在(zai)(zai)(zai)230-290小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)；夏季(ji)(ji)正当雨季(ji)(ji)，日照(zhao)(zhao)(zhao)(zhao)时(shi)(shi)(shi)数(shu)(shu)减少，月(yue)日照(zhao)(zhao)(zhao)(zhao)在(zai)(zai)(zai)230小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)左右；秋(qiu)季(ji)(ji)日照(zhao)(zhao)(zhao)(zhao)时(shi)(shi)(shi)数(shu)(shu)虽没有(you)春(chun)季(ji)(ji)多(duo)，但比夏季(ji)(ji)要(yao)多(duo)，月(yue)日照(zhao)(zhao)(zhao)(zhao)230-245小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)；冬季(ji)(ji)是(shi)一年(nian)(nian)(nian)中(zhong)(zhong)日照(zhao)(zhao)(zhao)(zhao)时(shi)(shi)(shi)数(shu)(shu)最(zui)(zui)(zui)少季(ji)(ji)节，月(yue)日照(zhao)(zhao)(zhao)(zhao)不足(zu)200小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)，一般在(zai)(zai)(zai)170-190小(xiao)(xiao)(xiao)(xiao)时(shi)(shi)(shi)。环(huan)(huan)境保护与绿化(hua)　　曾经的(de)(de)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)及华北(bei)(bei)(bei)(bei)(bei)(bei)(bei)春(chun)季(ji)(ji)多(duo)发沙尘暴，经过多(duo)年(nian)(nian)(nian)治理(li)(li)，取得显著成(cheng)效。2009年(nian)(nian)(nian)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)全(quan)年(nian)(nian)(nian)空(kong)气(qi)质量(liang)达(da)(da)到(dao)(dao)二级和(he)好于二级的(de)(de)天(tian)(tian)数(shu)(shu)为(wei)285天(tian)(tian)，比上年(nian)(nian)(nian)增加(jia)11天(tian)(tian)，占全(quan)年(nian)(nian)(nian)总天(tian)(tian)数(shu)(shu)的(de)(de)78.1%。 　　水(shui)环(huan)(huan)境治理(li)(li)力(li)度(du)加(jia)大(da)。2009年(nian)(nian)(nian)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)污(wu)(wu)水(shui)日处(chu)(chu)理(li)(li)能(neng)力(li)达(da)(da)到(dao)(dao)356万立方米(mi)(mi)，污(wu)(wu)水(shui)处(chu)(chu)理(li)(li)率(lv)达(da)(da)到(dao)(dao)80%。再生(sheng)水(shui)利用(yong)取得新进展，2009年(nian)(nian)(nian)再生(sheng)水(shui)利用(yong)量(liang)达(da)(da)到(dao)(dao)6.5亿立方米(mi)(mi)。 　　继续积极推动其(qi)他环(huan)(huan)境污(wu)(wu)染防治工作。2009年(nian)(nian)(nian)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)生(sheng)活(huo)垃圾无害化(hua)处(chu)(chu)理(li)(li)率(lv)达(da)(da)到(dao)(dao)95.8%。 　　城(cheng)(cheng)(cheng)(cheng)市(shi)(shi)(shi)(shi)(shi)园林绿化(hua)步伐加(jia)快。2009年(nian)(nian)(nian)末，北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)城(cheng)(cheng)(cheng)(cheng)镇人均(jun)(jun)公(gong)园绿地(di)面(mian)积14.5平(ping)方米(mi)(mi)。城(cheng)(cheng)(cheng)(cheng)镇绿化(hua)覆盖(gai)率(lv)达(da)(da)到(dao)(dao)44.4%。全(quan)市(shi)(shi)(shi)(shi)(shi)林木绿化(hua)率(lv)达(da)(da)到(dao)(dao)52.6%。行(xing)政(zheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)划(hua)　　北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)地(di)图解(jie)放后北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)的(de)(de)行(xing)政(zheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)划(hua)范围经过五次调整，直到(dao)(dao)2010年(nian)(nian)(nian)形成(cheng)了(le)今天(tian)(tian)14区(qu)(qu)(qu)(qu)(qu)(qu)(qu)、2县(xian)(xian)的(de)(de)格局。截至2010年(nian)(nian)(nian)，北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)共有(you)140个(ge)街道(dao)办事(shi)处(chu)(chu)、142个(ge)建制镇、35个(ge)建制乡、2554个(ge)社区(qu)(qu)(qu)(qu)(qu)(qu)(qu)居委会和(he)3955个(ge)村民委员会。其(qi)中(zhong)(zhong)地(di)处(chu)(chu)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)二环(huan)(huan)路以(yi)内的(de)(de)东(dong)城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)、西(xi)城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)两(liang)个(ge)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)是(shi)传(chuan)统上的(de)(de)内城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)，而随(sui)着城(cheng)(cheng)(cheng)(cheng)市(shi)(shi)(shi)(shi)(shi)的(de)(de)扩张，朝阳区(qu)(qu)(qu)(qu)(qu)(qu)(qu)、海(hai)淀区(qu)(qu)(qu)(qu)(qu)(qu)(qu)、丰台(tai)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)和(he)石景(jing)山(shan)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)也被认为(wei)是(shi)城(cheng)(cheng)(cheng)(cheng)内地(di)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)，形成(cheng)了(le)“城(cheng)(cheng)(cheng)(cheng)六区(qu)(qu)(qu)(qu)(qu)(qu)(qu)”的(de)(de)概(gai)念(nian)。规划(hua)中(zhong)(zhong)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)市(shi)(shi)(shi)(shi)(shi)城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)的(de)(de)范围是(shi)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)五环(huan)(huan)路以(yi)内。近年(nian)(nian)(nian)来随(sui)着城(cheng)(cheng)(cheng)(cheng)市(shi)(shi)(shi)(shi)(shi)化(hua)进程(cheng)的(de)(de)加(jia)快，先后有(you)数(shu)(shu)个(ge)近郊县(xian)(xian)改为(wei)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)。由于北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)市(shi)(shi)(shi)(shi)(shi)政(zheng)治、文化(hua)中(zhong)(zhong)心(xin)的(de)(de)定位，工业重(zhong)心(xin)正在(zai)(zai)(zai)逐渐外移。 　　2010年(nian)(nian)(nian)7月(yue)1日，中(zhong)(zhong)国国务院正式批复(fu)了(le)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)市(shi)(shi)(shi)(shi)(shi)政(zheng)府关于调整首(shou)都(dou)(dou)功(gong)(gong)能(neng)核(he)心(xin)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)行(xing)政(zheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)划(hua)的(de)(de)请示，同(tong)意[10]撤销(xiao)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)市(shi)(shi)(shi)(shi)(shi)原东(dong)城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)、崇文区(qu)(qu)(qu)(qu)(qu)(qu)(qu)，设立新的(de)(de)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)市(shi)(shi)(shi)(shi)(shi)东(dong)城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)，撤销(xiao)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)市(shi)(shi)(shi)(shi)(shi)原西(xi)城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)、宣武区(qu)(qu)(qu)(qu)(qu)(qu)(qu)，设立新的(de)(de)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)市(shi)(shi)(shi)(shi)(shi)西(xi)城(cheng)(cheng)(cheng)(cheng)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)。 　　以(yi)下为(wei)北(bei)(bei)(bei)(bei)(bei)(bei)(bei)京(jing)(jing)(jing)(jing)(jing)(jing)(jing)市(shi)(shi)(shi)(shi)(shi)各分(fen)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)情况(kuang)（2010调整后）： 　　①首(shou)都(dou)(dou)功(gong)(gong)能(neng)核(he)心(xin)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)　 　　首(shou)都(dou)(dou)功(gong)(gong)能(neng)核(he)心(xin)区(qu)(qu)(qu)(qu)(qu)(qu)(qu)面(mian)积（平(ping)方公(gong)里）