基于主成分分析的安阳市土地生态安全评价

Assessment of Land Ecological Security of Anyang City Based on the Principal Component Analysis

为了探求安阳市土地生态安全状况,运用主成分分析方法,选取12个指标建立安阳市土地生态安全综合评价体系,对安阳市土地生态安全进行评价。结果表明,社会发展因素、能源消耗与工业废物排放和经济发展是影响安阳市土地生态安全的3个主要因素。2014年安阳市龙安区、林州市和安阳县的土地状况为良好,汤阴县土地安全处于预警状态,文峰区处于中度警戒状态,而内黄县、殷都区和北关区处于重度警戒状态。安阳市土地生态安全形势严峻,必须采取措施,确保土地生态安全。

In order to explore the land ecological security situation of Anyang City in Henan Provence, 12 indexes were selected to establish the comprehensive assessment index system of land ecological security. Using the method of principal component analysis, the level of land ecological security in Anyang City was compared and evaluated. The results showed that the social development, energy consumption and industrial waste emissions,and the economic development were the main factors that affected the land ecological security in Anyang City. Long＇an District of Anyang City, Linzhou and Anyang County were good condition of the land ecological security ; Tangyin County was warning state of land ecological security; Wenfeng District was the medium warning state of land ecological security;Neihuang County, Yindu District and Beiguan District were serious warning state of land ecological security. Overall ,the land ecological security of Anyang City was facing the serious threat, countermeasures should be taken to ensure the ecological security of land.