河南省安阳市土地覆被变化对洪涝灾害承灾能力影响研究

Influence Research about Land Cover Change on Flood Disaster Bearing Capacity in Anyang City,Henan Province

洪涝灾害是当前我国城市面临最主要的灾害之一,研究土地覆被变化对洪涝灾害承灾能力的影响具有重要意义。在阐述土地覆被变化、洪涝灾害承灾能力概念的基础上,探讨了土地覆被类型与洪涝灾害承灾能力之间的关系。在分析安阳市土地覆被变化状况的基础上,研究了1983、1998、2000年土地覆被变化对洪涝灾害的影响。结果表明：1997~2012年,安阳市主要农作物播种面积、绿化面积、房屋建筑竣工面积和年底道路面积均呈增长态势,而森林覆盖率呈下降趋势;典型年份洪涝灾害与主要农作物播种面积增长负相关,其频度和量级与房屋建筑竣工面积增加正相关,而显著增加的道路建设用地等加大了排水系统压力,导致较少降雨量却造成了显著的洪灾经济损失。

Flood disaster is one of the main disasters which cities in china face,it is of great significance to study land-use and land-cover change on flood disaster bearing capacity. Based on the concept of the land-use and land-cover change and flood disaster bearing capacity,this paper analyzes the effects of land-use and land-cover types on flood？ disaster bearing capacity. Analyzing the condition of land-use and land-cover change from 1997 to 2012,this paper studies the land-use and land-cover influence on flood disaster in 1983,1998,2000. The results show that the main crops cultivated area as well as the green area,the building completed area and the road area is on the rise,however,forest coverage rate is on the decline from 1997 to 2012; Typical years floods have negatively correlated with growth major crop acreage,and its frequency and magnitude show positive correlation with increased building construction area,The significant increase of road construction land increases the pressure on the drainage system,resulting in less rainfall floods caused significant economic losses.