科學家利用葉麵積測定儀對(dui)不(bu)同(tong)植(zhi)物(wu)葉(ye)片(pian)葉(ye)麵(mian)積(ji)的(de)測(ce)定(ding)比(bi)較(jiao)分(fen)析(xi)可(ke)得(de)知(zhi)，樹(shu)木(mu)種(zhong)類(lei)的(de)不(bu)同(tong)會(hui)直(zhi)接(jie)影(ying)響(xiang)葉(ye)麵(mian)積(ji)的(de)大(da)小(xiao)
，並(bing)且(qie)隨(sui)光(guang)照(zhao)強(qiang)度(du)的(de)減(jian)弱(ruo)比(bi)葉(ye)麵(mian)積(ji)明(ming)顯(xian)增(zeng)加(jia)
，尤(you)其(qi)是(shi)從(cong)中(zhong)光(guang)強(qiang)到(dao)低(di)、弱光強，表明所測試樹種均能通過改變葉形態來適應光照條件的變化，在中、diguangtiaojianxiayepiantongguozengjiabiyemianjitigaoyepianguangbuhuonengli，jinertigaoyepiandeguangheshengchannengli。danzhidezhuyideshibutongshuzhongduiguangzhaoqiangdudebianhuabiaoxianchumingxianbutongdexiangyingmoshi
，jutitixianzai3個方麵:

　　1
、不同樹種對光照響應的最敏感區域明顯不同
；

　　2
、不同樹種比葉麵積隨光照強度而變化的程度不同
；

　　3、不同年齡苗木比葉麵積對光照的響應程度有差異。

　　butongshuzhongbiyemianjiduiguangzhaoqiangdubianhua
，xiangyingmoshidemingxianchayiduigaiqubutongshuzhongdegongshengjizhijuyouzhongyaoyiyi。senlinshengtaixitongshuzhonggongshenglilundeyigehexinjiashejiushibutongshuzhongnenggoutongguogaibianqishenglishengtaixuetexinglaishiyinglinneibutongdeguanghuanjing
，erqiezhezhonglilunzairedaisenlinshengtaixitongdedaoleyixieyanzheng。benyanjiubiaoming，cishenglinshengtaixitongbutongshuzhongtongguogaibianyepianxingtailaishiyingbutongdeguanghuanjing，erqiezaixiangtongdeguanghuanjingxiabutongshuzhongbiyemianjiyecunzaimingxianfenyi
，zhejiangyouliyugaiqushengtaixitongneishuzhongdegongsheng

，qigongshengjizhiyuanyubutongshuzhongduiguangdexuqiuchayi，tixianchuyepiantanshouhuozuidahuayuzhiwucunhuozhijiandeyizhongquanheng。

　　與胡桃楸、紅鬆(比葉麵積變化最明顯是從中光強至低光強)及黃波羅和水曲柳(從低光強至弱光強)不同
，紅皮雲杉從全光至中光強變化最為明顯，可能與雲杉本身的生物學特性有關。紅皮雲杉屬於較耐蔭樹種，較強光照(全光)將對其生長產生抑製作用，葉片通過增加葉片的厚度或密度(降低單位質量葉麵積)來適應較強的光環境，避免強光輻射。