On the Spatial and Temporal Patterns of Flood and Drought Hazards of China
On the Spatial and Temporal Patterns of Flood and Drought Hazards of China
复制标题
我国水旱灾害时空格局研究
作者：
Jia Huicong;Pan Donghua
20世纪90年代以来，水旱灾害日益受到人们的重视。成为制约中国农业和经济可持续发展的障碍因素。本文以2359个县域单位为研究对象，以灾害频次为洪涝灾害危险性评价指标，通过灾害数字化制图，分析洪涝灾害时空格局，了解洪涝灾害高发区及其转移成因，提出洪涝灾害高发区的防灾对策。综上所述，东北平原、内蒙古中东部、华北平原、陕西北部、长江流域中下游、云贵高原、东南沿海地区和新疆北部是防治水旱灾害的重点区域。
The flood and drought hazards have been getting more serious attention since 1990's. And they become the obstacle factors constraining China's agriculture and sustainable economic development. This paper selected 2,359 county units and with disasters frequency as flood-drought hazard assessment index, through hazard digital mapping, the spatial and temporal patterns were analyzed and hence understood the flood-drought high risk zone and the transfer causing factors, presented disaster prevention measures for the high-risk zones. In sum, the key areas of preventing and controlling flood and drought disaster should be Northeast Plain, central and eastern Inner Mongolia, North China Plain, the northern part of Shaanxi Province, the middle and lower reaches of Yangtze River Basin, Yunnan-Guizhou Plateau, the southeast coastal region and northern Xinjiang.