中国人口资源与环境
中國人口資源與環境
중국인구자원여배경
China Polulation.Resources and Environment
2012年
11期
32~39
,共null页
贺山峰 葛全胜 吴绍洪 戴尔阜 吴文祥
賀山峰 葛全勝 吳紹洪 戴爾阜 吳文祥
하산봉 갈전성 오소홍 대이부 오문상
PRECIS 洪涝致灾危险性 时空格局 SRES B2情景 安徽省
PRECIS 洪澇緻災危險性 時空格跼 SRES B2情景 安徽省
PRECIS 홍로치재위험성 시공격국 SRES B2정경 안휘성
PRECIS; flood hazard; spatio-temporal pattern; SRES B2 scenario; Anhui Province
预估未来极端天气事件致灾危险性对于评估气候变化对人类经济和社会的潜在风险具有极其重要的意义。本研究采用PREClS模式模拟的气候情景数据,选取年均暴雨日数、年均最大三日降水量、高程、坡度和距河湖距离五个指标,对SRESB2情景下未来安徽省县域尺度洪涝致灾危险性时空格局进行预估。结果表明:相对于现阶段(1981-2010),未来安徽省年均暴雨日数和最大三日降水量总体上呈现北部减少、南部增加的趋势;各时段安徽省洪灾危险性等级由北向南大致呈逐渐升高的趋势:未来安徽省洪灾危险性格局变化主要发生在近期(2011-2040)和中期(2041一2070);到中期时段,安徽省洪灾危险性处于5级的县域个数和面积百分比分别为16个和17.87%,是现阶段的2倍和2.24倍。研究结果可为气候变化背景下该地区洪涝灾害风险管理提供科学依据。
預估未來極耑天氣事件緻災危險性對于評估氣候變化對人類經濟和社會的潛在風險具有極其重要的意義。本研究採用PREClS模式模擬的氣候情景數據,選取年均暴雨日數、年均最大三日降水量、高程、坡度和距河湖距離五箇指標,對SRESB2情景下未來安徽省縣域呎度洪澇緻災危險性時空格跼進行預估。結果錶明:相對于現階段(1981-2010),未來安徽省年均暴雨日數和最大三日降水量總體上呈現北部減少、南部增加的趨勢;各時段安徽省洪災危險性等級由北嚮南大緻呈逐漸升高的趨勢:未來安徽省洪災危險性格跼變化主要髮生在近期(2011-2040)和中期(2041一2070);到中期時段,安徽省洪災危險性處于5級的縣域箇數和麵積百分比分彆為16箇和17.87%,是現階段的2倍和2.24倍。研究結果可為氣候變化揹景下該地區洪澇災害風險管理提供科學依據。
예고미래겁단천기사건치재위험성대우평고기후변화대인류경제화사회적잠재풍험구유겁기중요적의의。본연구채용PREClS모식모의적기후정경수거,선취년균폭우일수、년균최대삼일강수량、고정、파도화거하호거리오개지표,대SRESB2정경하미래안휘성현역척도홍로치재위험성시공격국진행예고。결과표명:상대우현계단(1981-2010),미래안휘성년균폭우일수화최대삼일강수량총체상정현북부감소、남부증가적추세;각시단안휘성홍재위험성등급유북향남대치정축점승고적추세:미래안휘성홍재위험성격국변화주요발생재근기(2011-2040)화중기(2041일2070);도중기시단,안휘성홍재위험성처우5급적현역개수화면적백분비분별위16개화17.87%,시현계단적2배화2.24배。연구결과가위기후변화배경하해지구홍로재해풍험관리제공과학의거。
Prediction of hazard changes in climate extremes is of important significance for assessing the potential impacts of climate change on human society and natural systems. Using simulations of ' Providing Regional Climates for Impacts Studies (PRECIS) ' , authors selected five indicators ( annual rainstorm days, annual maximum 3-day precipitation, elevation, gradient and distance to riverlake) to project the spatial patterns of flood hazard over Anhui Province at county scale for the present (1981 -2010) and future (2011 -2100) under SRES B2 scenario. The results showed that compared with the present period, the mean annual rainstorm days and 3-day maximum precipitation over Anhui Province in the future would decrease in the north and increase in the south, while the probability of extreme precipitations would significantly increase. The flood hazard grade increased gradually from north to south in the four study periods. Changes of flood hazard patterns over Anhui Province in the future would mainly occur in the nearterm (2011 - 2040) and midterm (2041 -2070) , and the number of counties in grade five of flood hazard would be 16 and the area percentage would be 29.75% in the midterm, 1 and 1.24 times more than present period respectively. The results can provide scientific basis for flood risk management under climate change in this area.