北京密云水库迎候鸟先头部队 多措并举保障顺利迁徙|ijzzijzzij亚洲大全

  中新网北京11月23日电 (王群 陈杭)记者23日从北京市水务局获悉,当前,密云水库流域迁徙候鸟数量持续攀升,已达上千只。清水河区域再现大天鹅游弋倩影,小漕村周边灰鹤、短嘴豆雁、赤麻鸭集群觅食,迁徙候鸟正陆续抵达这片重要补给地。

图为大天鹅。李欣 摄

  今年7月,北京密云水库流域遭遇区域性大洪水,入库河流洪峰流量超历史极值,水库库滨区域部分植被、浅滩被冲毁,候鸟传统栖息与补给区域受到影响。针对降雨后的入库河流及库滨带生态特点,北京市密云水库管理处新增多项精准护鸟举措,全力保障今年迁徙季迁徙通道畅通。

  据悉,北京市密云水库管理处升级管护体系,开展候鸟动态监测,根据种群数量变化实时调整保护策略,减少人为干扰,同时强化协同管护力度,联合属地部门开展生物资源调查工作,制止违规观鸟行为。

  在生态保障上,北京市密云水库管理处投放天然谷物进行食源补给,同时清理库滨带杂草以增加鸟类栖息的浅滩,重建湿地生境,搭建了科普宣教平台,在候鸟集中区域设置警示标识与科普展板,引导公众文明观鸟。

  此外,北京市密云水库管理处建立候鸟应急救助机制,联合野生动物救助机构及时救助受伤或体弱候鸟,全方位筑牢灾后候鸟迁徙“安全防线”。

  北京市密云水库管理处表示,密云水库作为重要的迁徙中转站,整个迁徙季预计迎来上万只候鸟歇息补给。(完)

**BMItizhongzhishuzenmejisuan**BMI(BodyMassIndex,tizhongzhishu)shiyizhongjiandanqieyouxiaodepinggurentifeipangchengduhejiankangzhuangkuangdegongju。tabujinyiyujisuan,erqienenggouweiyiliaozhuanyerenshihegerentigongyouguantizhongshifouzaijiankangfanweineidechubuzhishi。BMIdejisuangongshijiyushengaohetizhonglianggejibencanshu,jiexialaiwomenjiulaixiangxilejiezheyiguocheng。shouxian,BMIdejisuangongshiwei:\[\text{BMI}=\frac{\text{tizhong(qianke)}}{(\text{shengao(mi)})^2}\]julilaishuo,ruguoyigerendetizhongshi70qianke,shengaoshi1.75mi,namekeyianzhaogongshijinxingjisuan:1.jiangshengaodairugongshi,1.75midepingfangwei3.0625。2.jiexialai,jiangtizhong70qiankechuyi3.0625:\[\text{BMI}=\frac{70}{3.0625}\approx22.86\]tongguoshangshujisuan,zhegerendeBMIyuewei22.86。BMIdeshuzhitongchangbeihuafenweijigefanwei,yibangzhupingguyigerendetizhongzhuangkuang:-BMIxiaoyu18.5:tizhongguoqing-BMIzai18.5zhi24.9zhijian:zhengchangfanwei-BMIzai25zhi29.9zhijian:chaozhong-BMIdayu30:feipangzhidezhuyideshi,suiranBMIshiyizhonghenhaodechubupinggugongju,dantabingbushihenglianggerenjiankangdeweiyibiaozhun。BMIbingweikaolvjirouzhiliang、zhifangfenbuhexingbiechayidengyinsu。yinci,yundongyuanhuonaxiejirouliangjiaodaderenkenenghuiyoujiaogaodeBMI,danzhebuyidingbiaoshitamendejiankangzhuangkuangbujia。ciwai,BMIyewufahengliangshentichengfen,biru*(*)*(*)B(B)M(M)I(I)体(ti)重(zhong)指(zhi)数(shu)怎(zen)么(me)计(ji)算(suan)*(*)*(*)B(B)M(M)I(I)((()B(B)o(o)d(d)y(y)M(M)a(a)s(s)s(s)I(I)n(n)d(d)e(e)x(x),(,)体(ti)重(zhong)指(zhi)数(shu))())是(shi)一(yi)种(zhong)简(jian)单(dan)且(qie)有(you)效(xiao)的(de)评(ping)估(gu)人(ren)体(ti)肥(fei)胖(pang)程(cheng)度(du)和(he)健(jian)康(kang)状(zhuang)况(kuang)的(de)工(gong)具(ju)。(。)它(ta)不(bu)仅(jin)易(yi)于(yu)计(ji)算(suan),(,)而(er)且(qie)能(neng)够(gou)为(wei)医(yi)疗(liao)专(zhuan)业(ye)人(ren)士(shi)和(he)个(ge)人(ren)提(ti)供(gong)有(you)关(guan)体(ti)重(zhong)是(shi)否(fou)在(zai)健(jian)康(kang)范(fan)围(wei)内(nei)的(de)初(chu)步(bu)指(zhi)示(shi)。(。)B(B)M(M)I(I)的(de)计(ji)算(suan)公(gong)式(shi)基(ji)于(yu)身(shen)高(gao)和(he)体(ti)重(zhong)两(liang)个(ge)基(ji)本(ben)参(can)数(shu),(,)接(jie)下(xia)来(lai)我(wo)们(men)就(jiu)来(lai)详(xiang)细(xi)了(le)解(jie)这(zhe)一(yi)过(guo)程(cheng)。(。)首(shou)先(xian),(,)B(B)M(M)I(I)的(de)计(ji)算(suan)公(gong)式(shi)为(wei):(:)\(\)[([)\(\)t(t)e(e)x(x)t(t){({)B(B)M(M)I(I)}(})=(=)\(\)f(f)r(r)a(a)c(c){({)\(\)t(t)e(e)x(x)t(t){({)体(ti)重(zhong)((()千(qian)克(ke))())}(})}(}){({)((()\(\)t(t)e(e)x(x)t(t){({)身(shen)高(gao)((()米(mi))())}(}))())^(^)2(2)}(})\(\)](])举(ju)例(li)来(lai)说(shuo),(,)如(ru)果(guo)一(yi)个(ge)人(ren)的(de)体(ti)重(zhong)是(shi)7(7)0千(qian)克(ke),(,)身(shen)高(gao)是(shi)1(1).(.)7(7)5(5)米(mi),(,)那(na)么(me)可(ke)以(yi)按(an)照(zhao)公(gong)式(shi)进(jin)行(xing)计(ji)算(suan):(:)1(1).(.)将(jiang)身(shen)高(gao)代(dai)入(ru)公(gong)式(shi),(,)1(1).(.)7(7)5(5)米(mi)的(de)平(ping)方(fang)为(wei)3(3).(.)06(6)2(2)5(5)。(。)2(2).(.)接(jie)下(xia)来(lai),(,)将(jiang)体(ti)重(zhong)7(7)0千(qian)克(ke)除(chu)以(yi)3(3).(.)06(6)2(2)5(5):(:)\(\)[([)\(\)t(t)e(e)x(x)t(t){({)B(B)M(M)I(I)}(})=(=)\(\)f(f)r(r)a(a)c(c){({)7(7)0}(}){({)3(3).(.)06(6)2(2)5(5)}(})\(\)a(a)p(p)p(p)r(r)o(o)x(x)2(2)2(2).(.)8(8)6(6)\(\)](])通(tong)过(guo)上(shang)述(shu)计(ji)算(suan),(,)这(zhe)个(ge)人(ren)的(de)B(B)M(M)I(I)约(yue)为(wei)2(2)2(2).(.)8(8)6(6)。(。)B(B)M(M)I(I)的(de)数(shu)值(zhi)通(tong)常(chang)被(bei)划(hua)分(fen)为(wei)几(ji)个(ge)范(fan)围(wei),(,)以(yi)帮(bang)助(zhu)评(ping)估(gu)一(yi)个(ge)人(ren)的(de)体(ti)重(zhong)状(zhuang)况(kuang):(:)-(-)B(B)M(M)I(I)小(xiao)于(yu)1(1)8(8).(.)5(5):(:)体(ti)重(zhong)过(guo)轻(qing)-(-)B(B)M(M)I(I)在(zai)1(1)8(8).(.)5(5)至(zhi)2(2)4(4).(.)9(9)之(zhi)间(jian):(:)正(zheng)常(chang)范(fan)围(wei)-(-)B(B)M(M)I(I)在(zai)2(2)5(5)至(zhi)2(2)9(9).(.)9(9)之(zhi)间(jian):(:)超(chao)重(zhong)-(-)B(B)M(M)I(I)大(da)于(yu)3(3)0:(:)肥(fei)胖(pang)值(zhi)得(de)注(zhu)意(yi)的(de)是(shi),(,)虽(sui)然(ran)B(B)M(M)I(I)是(shi)一(yi)种(zhong)很(hen)好(hao)的(de)初(chu)步(bu)评(ping)估(gu)工(gong)具(ju),(,)但(dan)它(ta)并(bing)不(bu)是(shi)衡(heng)量(liang)个(ge)人(ren)健(jian)康(kang)的(de)唯(wei)一(yi)标(biao)准(zhun)。(。)B(B)M(M)I(I)并(bing)未(wei)考(kao)虑(lv)肌(ji)肉(rou)质(zhi)量(liang)、(、)脂(zhi)肪(fang)分(fen)布(bu)和(he)性(xing)别(bie)差(cha)异(yi)等(deng)因(yin)素(su)。(。)因(yin)此(ci),(,)运(yun)动(dong)员(yuan)或(huo)那(na)些(xie)肌(ji)肉(rou)量(liang)较(jiao)大(da)的(de)人(ren)可(ke)能(neng)会(hui)有(you)较(jiao)高(gao)的(de)B(B)M(M)I(I),(,)但(dan)这(zhe)不(bu)一(yi)定(ding)表(biao)示(shi)他(ta)们(men)的(de)健(jian)康(kang)状(zhuang)况(kuang)不(bu)佳(jia)。(。)此(ci)外(wai),(,)B(B)M(M)I(I)也(ye)无(wu)法(fa)衡(heng)量(liang)身(shen)体(ti)成(cheng)分(fen),(,)比(bi)如(ru)

发布于:北京市