CAJ | 학술논문

基于大样地双重抽样调查方法，通过监测不同大小和空间位置的遥感和地面样地，同时采用双重回归估计方法，分别得出广东省的森林资源结果，比较其差异，并分析了不同样地大小时各地类变动系数的变化情况，并就遥感正判率对抽样效率的影响等进行了研究。结果表明：①采用2 km ×2 km遥感样地和500 m ×500 m地面样地双重回归得到的林地、森林、有林地、乔木林地等的面积，其结果可靠，抽样精度达95％以上；②500 m ×500 m遥感样地判读得到林地、森林、有林地、乔木林地的面积，正判率均在80％以上，与地面调查得到的面积成数相关紧密，R2均在0.5以上。③1.5 km ×1.5 km遥感样地和500 m ×500 m地面样地双重抽样组合方案，应为广东省森林资源监测的优选方案；④对于林地、森林、有林地、乔木林，样地面积大于1 km ×1 km时，其变动系数基本趋于稳定，因此遥感样地应设置1 km ×1 km以上。
기우대양지쌍중추양조사방법，통과감측불동대소화공간위치적요감화지면양지，동시채용쌍중회귀고계방법，분별득출광동성적삼림자원결과，비교기차이，병분석료불동양지대소시각지류변동계수적변화정황，병취요감정판솔대추양효솔적영향등진행료연구。결과표명：①채용2 km ×2 km요감양지화500 m ×500 m지면양지쌍중회귀득도적임지、삼림、유임지、교목임지등적면적，기결과가고，추양정도체95％이상；②500 m ×500 m요감양지판독득도임지、삼림、유임지、교목임지적면적，정판솔균재80％이상，여지면조사득도적면적성수상관긴밀，R2균재0.5이상。③1.5 km ×1.5 km요감양지화500 m ×500 m지면양지쌍중추양조합방안，응위광동성삼림자원감측적우선방안；④대우임지、삼림、유임지、교목림，양지면적대우1 km ×1 km시，기변동계수기본추우은정，인차요감양지응설치1 km ×1 km이상。
In this paper,the forest resources monitoring in Guangdong province based on double sampling with-different area size large plot was studied,and the difference comparison of forest resources monitoring result by using different area size and space position large plot was studied,then the coefficient of variation changes, theremote sensing accuracy to influence the double sampling efficiency with large plot were analyzed.The results showed that:the area estimates of forestry land,forestedland,forest and arbor forest based on double sampling with 2 km ×2 km remote sensing and 500 m ×500 m field surveylarge plot were very reliable,the sampling precisionsof the estimates were up to 95%;The remote sensingjudgment accuracy of forestry land,forested-land,forest and arbor forest was above 80%,the area estimateswas very closed by remote sensing and field sur-veying,the R2 was above 0.5;the best method to monitor forest resources in Guangdong province was double sampling with 1.5 km ×1.5 km remote sensing and 500 m ×500 m field survey large plot;The change of vari-ationcoefficient of forestry land,forestedland,forest and arbor forest was stablewhen large plot was up to 1 km ×1 km.