CAJ | 학술논문

汶川地震造成震区植被损毁严重．震后自然植被恢复情况评估，对地震灾区恢复重建和规划有重要意义．选择都江堰－映秀草坡区为研究区，计算不同时相的归一化植被指数，分析震后研究区植被覆盖变化和植被恢复状况．提取受地震影响植被指数负变化区域，分析该区域2009年至2014年植被恢复度同地形因子的时空分布关系．分析表明：震后植被总体恢复较好，但研究区植被恢复情况不均匀．植被恢复度增长趋势随着坡度的增加表现为先增长，当植被恢复度达到0．6时，植被恢复度增长趋势随着坡度的增加而减少；植被恢复度增长趋势随着高程的增加表现为先增长，当植被恢复度达到0．45时，植被恢复度增长趋随着高程的增加而减少．
문천지진조성진구식피손훼엄중．진후자연식피회복정황평고，대지진재구회복중건화규화유중요의의．선택도강언－영수초파구위연구구，계산불동시상적귀일화식피지수，분석진후연구구식피복개변화화식피회복상황．제취수지진영향식피지수부변화구역，분석해구역2009년지2014년식피회복도동지형인자적시공분포관계．분석표명：진후식피총체회복교호，단연구구식피회복정황불균균．식피회복도증장추세수착파도적증가표현위선증장，당식피회복도체도0．6시，식피회복도증장추세수착파도적증가이감소；식피회복도증장추세수착고정적증가표현위선증장，당식피회복도체도0．45시，식피회복도증장추수착고정적증가이감소．
Assessing vegetation restoration has important significance on reconstruction and restoration planning of earthquake -stricken area.The normalized difference vegetation index is calculated to analyze the change of vegetation coverage and vegetation restoration condition.Negative change region of vegetation index is extracted to analyze the relationship between vegetation restoration and terrain factors.The analysis shows that the total recovery of the vegetation was good,but the vegetation recovery was not uniform in the study area.The growth trend of vegetation recovery increased with the increase of slope.When the degree of vegetation restoration reached 0. 6,the growth trend of vegetation recovery decreased with the increase of slope.The growth trend of vegetation recovery increased with the increase of elevation.When the degree of vegetation restoration reached 0.45,the growth trend of vegetation recovery decreased with the increase of elevation.