CAJ | 학술논문

林龄（龄组）是划分林分结构的主要指标之一，其对监测森林健康，推进森林可持续发展具有重要意义。本文提出一种基于遥感数据的龄组植被指数（AGVI），并对其可行性进行验证。以福建省三明市、将乐县、沙县、南平市、华安县、云霄县、南安市、安溪县、莆田市、长汀县、建阳市、宁德市及福清市等13个县（市）518组松林龄组数据及同时相HJ-1 CCD多光谱影像为基础，对各龄组松林冠层的蓝光、绿光、红光、近红外及NDVI的光谱差异性进行分析，各龄组在近红外波段表现为幼龄林＞中龄林＞过熟林＞成熟林＞近熟林的特征，NDVI则表现为成熟林＞近熟林＞过熟林＞幼龄林＞中龄林的特征，由此构建龄组植被指数AGVI；该指数可以扩大各龄组松林的绝对及相对光谱差异。采用K-均值法对松林AGVI进行聚类分析，结果显示，松林龄组的划分精度为80．45％，准确率为90．41％。由此证实本文所构建的龄组植被指数具备有效性。
림령（령조）시화분림분결구적주요지표지일，기대감측삼림건강，추진삼림가지속발전구유중요의의。본문제출일충기우요감수거적령조식피지수（AGVI），병대기가행성진행험증。이복건성삼명시、장악현、사현、남평시、화안현、운소현、남안시、안계현、보전시、장정현、건양시、저덕시급복청시등13개현（시）518조송림령조수거급동시상HJ-1 CCD다광보영상위기출，대각령조송림관층적람광、록광、홍광、근홍외급NDVI적광보차이성진행분석，각령조재근홍외파단표현위유령림＞중령림＞과숙림＞성숙림＞근숙림적특정，NDVI칙표현위성숙림＞근숙림＞과숙림＞유령림＞중령림적특정，유차구건령조식피지수AGVI；해지수가이확대각령조송림적절대급상대광보차이。채용K-균치법대송림AGVI진행취류분석，결과현시，송림령조적화분정도위80．45％，준학솔위90．41％。유차증실본문소구건적령조식피지수구비유효성。
In the present paper,one remote sensing index-age group vegetation index (AGVI)was put forward,and its feasibili-ty was verified.Taking 518 groups of pine forest age group data collected in 13 counties (cities)of Sanming,Jiangle,Shaxian, Nanping,Huaan,Yunxiao,Nanping,Anxi,Putian,Changting,Jianyang,Ningde and Fuqing,Fujian Province and HJ-1 CCD multi-spectral image at the same time-phase as the basis,the spectrum differences of blue,green,red,near infrared and NDVI of each age group were analyzed,showing the characteristics of young forest>middle-aged forest>over-mature forest>mature forest>near mature forest at near infrared band and mature forest>near mature forest>over-mature forest>young forest>mid-dle-aged forest at NDVI,thus the age group vegetation index(AGVI)was constructed;the index could increase the absolute and relative spectrum differences among age groups.For the pine forest AGVI,cluster analysis was conducted with K-mean method, showing that the division accuracy of pine forest age group was 80.45%,and the accurate rate was 90.41%.Therefore,the ef-fectiveness of age group vegetation index constructed was confirmed.