摘要
利用扰动指数算法对四川省阿坝州理县的森林扰动进行时间序列监测研究。基于TM数据对1994-2001,2001-2007,2007-2008,2008-2011年4个时间段的理县森林扰动进行监测。结果表明,4个时间段理县受扰动的森林面积分别为437.94,278.46,260.46,184.14 hm2,主要原因依次为人为活动,洪水及次生灾害影响,汶川地震破坏,滑坡、塌方和堰塞湖等地震次生灾害。经过验证kappa系数达到0.84。数据显示,2001年前该县森林扰动较为严重,2001年后该县受扰动森林面积逐步减少,说明森林状况逐渐转好。
Research was made on forest disturbance in time series in Lixian county,Sichuan province by disturbance index.Based on TM remote sensing data,determinations were conducted on forest disturbance during four periods,like1994-2001,2001-2007,2007-2008and2008-2011.The result showed that during the4periods,forest disturbance area in Lixian was437.94ha,278.46ha,260.46ha and184.14ha.The main causes were human activities,flood and secondary disasters,Wenchuan Earthquake and its secondary disasters of the earthquake such as landslide and dammed lake.Kappa coefficient was0.84.Analysis demonstrated that forest disturbance was serious before2001,but decreased then,indicating healthier forest.
作者
张宇欣
倪静
杨存建
罗银建
马洋洋
ZHANG Yu-xin;NI Jing;YANG Cun-jian;LUO Yin-jian;MA Yang-yang(Key Laboratory of the Evaluation and Monitoring of Southwest Land Resources of Ministry of Education, Sichuan Normal University,Chengdu 610068, China)
出处
《浙江林业科技》
北大核心
2017年第3期48-53,共6页
Journal of Zhejiang Forestry Science and Technology
基金
四川师范大学研究生优秀学位论文培育基金资助(校研字(2016)4-42)
关键词
理县
森林扰动
扰动指数
时间序列
监测
Lixian county
forest disturbance
disturbance index
time series
monitoring
