中文摘要：

为了给河南省土地开发建设和生态环境管理提供理论和技术支持,通过构建景观生态风险评估框架,以6种景观类型所代表的生态系统作为风险受体,人类干扰为风险源,利用地统计学方法和GIS技术,对1980年代和2005年土地利用数据进行了景观格局指数计算和生态风险指数空间区划.结果表明,近20年间,由于人类干扰,生态风险指数的最大值上升了0.99,景观生态风险程度加剧.两个时期的低风险区主要位于由秦岭山脉东延的华山、崤山、熊耳山、外方山、伏牛山组成的河南省豫西山地,太行山南段东麓的豫北部分山地,和包括桐柏山、大别山的豫南部分山地区,景观类型以林地和草地为主;高风险区主要分布在鹤壁市、安阳市、开封市和濮阳市境内的少量未利用土地区,以及黄河干流、南阳市的丹江口水库、鸭河口水库、驻马店市的宿鸭湖水库、平顶山市的白龟山水库区等,景观类型以未利用土地和水体为主;而在低风险区与高风险区之间的景观类型主要是位于平原和盆地区的建设用地与耕地.

英文摘要：

In order to provide the theoretical and technical support for land development construction and eco-environmental management in Henan Province,by constructing framework of landscape ecological risk assessment,selecting six landscape types as risk receptors and human disturbance as risk source,with the geo-statistical theoretical model and GIS technology,based on land use data in 1980s and 2005,landscape pattern indexes and spatial zoning of ecological risk indexes were acquired.The results show：In recent twenty years,the maximum of ecological risk indexes increases 0.99 because of human disturbance.This means the extent of landscape ecological risk is aggravated.In 1980s and 2005,the low risk regions are all located on mountain land and hills,the landscape types are forestland and meadowland;Landscape types of the high risk regions are unused land and water;Landscape types between the low risk regions and high risk regions are building site and farmland,they are all located on plain and basin.