摘要
以2011-2015年湖北省土地利用类型遥感解译数据及相关水利和环统数据为基础,根据《生态环境状况评价技术规范》(HJ192-2015),对湖北省近5年来生态环境状况及其变化趋势进行分析;并通过对生态环境状况指数值(EI)与生物丰度指数等5个分指数之间的相关性分析,探究了影响湖北省生态环境状况的主要原因。结果表明:(1)2011-2015年湖北省生态环境状况总体良好,EI值保持在71左右,其中2013年指数值为五年间最低,EI整体上呈"M"型变化趋势。(2)相关性分析表明,湖北省生态环境状况主要受生物丰度指数、植被覆盖指数和土地胁迫指数的影响,相关系数分别为0.98、0.86和-0.73,均为显著强相关;而植被覆盖指数和水网密度指数值的变化对ΔEI的影响最大,二者与ΔEI的相关系数分别为0.89和0.71。
Based on land use data from RS interpretation, water resources data and environmental statistic data from 2011 to2015, this research analyzed the Eco-environmental status and its variation trends of Hubei Province according to Technical Criterion for Ecosystem Status Evaluation(HJ 192-2015). And through correlation analysis between Ecological index(EI)and its five sub-index such as biological abundance index, this paper discussed the main factors affecting the Eco-environmental status of Hubei Province. The results show that:(1) The eco-environment status from 2011 to 2015 in Hubei Province kept in good level and the EI maintained at around 71. And the variation trend of EI appeared "M" shape during this five years, reaching a lowest value in 2013.(2) Correlation analysis showed that the Eco-environmental status of Hubei Province was mainly affected by biological abundance index, vegetation index and soil stress index, with a correlation coefficients of 0.98, 0.86 and-0.73 respectively, thus were all significantly correlated. But the variation of EI(ΔEI) was most affected by the variation of vegetation index and the variation of water density index, with a correlation coefficients of 0.89 and 0.71 respectively.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2017年第S2期300-305,共6页
Environmental Science & Technology
关键词
湖北省
生态环境
遥感
变化
影响因素
Hubei Province
ecological environment
remote sensing
variation
influence factors
