灾害学
災害學
재해학
JOURNAL OF CATASTROPHOLOGY
2015年
1期
198-204
,共7页
魏建波%赵文吉%关鸿亮%王志恒
魏建波%趙文吉%關鴻亮%王誌恆
위건파%조문길%관홍량%왕지항
干旱灾害%熵权法%风险%区划%武陵山片区
榦旱災害%熵權法%風險%區劃%武陵山片區
간한재해%적권법%풍험%구화%무릉산편구
drought disaster%entropy method%risk%zoning%Wuling Mountain area
根据灾害系统理论,以连片特困区-武陵山片区干旱灾害为例,分别从孕灾环境敏感性、致灾因子的危险性和承载体的脆弱性3个方面,选取地形地貌、土壤类型、植被覆盖类型、水资源、降雨量、人口密度及耕地面积等指标为旱灾风险评估指标因子,利用熵权法确定各因子权重,建立武陵山片区干旱灾害风险评估模型,并进行风险区划,为武陵山片区区域防灾、减灾和区域扶贫措施的制定提供参考依据。研究结果表明:武陵山片区区域整体处于中、高风险区,空间分布呈东南-西北向条带状分布;东南区域处在干旱灾害高风险区,西北区域处在干旱灾害中等风险区,而东北区域处在相对较低的风险区。
根據災害繫統理論,以連片特睏區-武陵山片區榦旱災害為例,分彆從孕災環境敏感性、緻災因子的危險性和承載體的脆弱性3箇方麵,選取地形地貌、土壤類型、植被覆蓋類型、水資源、降雨量、人口密度及耕地麵積等指標為旱災風險評估指標因子,利用熵權法確定各因子權重,建立武陵山片區榦旱災害風險評估模型,併進行風險區劃,為武陵山片區區域防災、減災和區域扶貧措施的製定提供參攷依據。研究結果錶明:武陵山片區區域整體處于中、高風險區,空間分佈呈東南-西北嚮條帶狀分佈;東南區域處在榦旱災害高風險區,西北區域處在榦旱災害中等風險區,而東北區域處在相對較低的風險區。
근거재해계통이론,이련편특곤구-무릉산편구간한재해위례,분별종잉재배경민감성、치재인자적위험성화승재체적취약성3개방면,선취지형지모、토양류형、식피복개류형、수자원、강우량、인구밀도급경지면적등지표위한재풍험평고지표인자,이용적권법학정각인자권중,건립무릉산편구간한재해풍험평고모형,병진행풍험구화,위무릉산편구구역방재、감재화구역부빈조시적제정제공삼고의거。연구결과표명:무릉산편구구역정체처우중、고풍험구,공간분포정동남-서북향조대상분포;동남구역처재간한재해고풍험구,서북구역처재간한재해중등풍험구,이동북구역처재상대교저적풍험구。
According to the disaster system theory,drought disaster of the destitute areas-Wuling mountain ar-ea is taken as an example,from three aspects as sensitivity of disaster causing factor,hazard of disaster causing fac-tor and vulnerability of bearing body,drought risk evaluation index factors are chosen from index of topography,soil type,vegetation type,water resources,rainfall,density of population,cultivated land area,etc.By using the method of entropy right,the weight of each factor is determined and the drought disaster model of risk assessment is established.Risk zoning is conducted to provide reference for the regional disaster prevention,mitigation and re-gional poverty alleviation.The results show that:the whole region of Wuling mountain area is in the high risk area, the spatial distribution demonstrated strip distribution from the southeast to the northwest;the southeast region is in high risk area of drought disaster,the northwest region is in the medium risk area drought disaster,and the north-east region is in relatively low risk area.