Reflectance water index를 이용한 참나무속 3종 낙엽의 함수량 추정 (Estimation of Water Content in Leaf Litter of Three Quercus Species by Reflectance Water Index)

서지정보

· 발행기관 : 한국환경과학회
· 수록지 정보 : 한국환경과학회지 / 27권 / 4호 / 275 ~ 279페이지
· 저자명 : 서계홍

초록

Water status of intact plants has been optically estimated by measuring reflectance at the wavelengths 1,450 nm and 1,900 nm based on their signal strengths. Although another water band at 970 nm is considered to have very small signals, the band apparently lies within the detection range of inexpensive spectrometer and plain charge-coupled device (CCD) camera used in wild fire studies. However measurement of the reflectance at 970 nm has been rarely applied to estimate the water status of dead plant materials such as fallen branch, twig, and leaf. To test the possibility of applying water reflectance at 970 nm to estimate the water content (WC) in leaf litter, the reflectance in various WC values were measured in the leaf litter of three Quercus species (Q aliena, Q aliena, Q mongolica, and Quercus variabilis). The results showed that the WC in the leaf litter can be determined by reflectance water index (WI) in the three Quercus species (WC=1,450×WI-1,378.8, r=0.865). However, there was no interaction effect in the relationship between WI and WC among the litter of the three Quercus species.

영어초록

Water status of intact plants has been optically estimated by measuring reflectance at the wavelengths 1,450 nm and 1,900 nm based on their signal strengths. Although another water band at 970 nm is considered to have very small signals, the band apparently lies within the detection range of inexpensive spectrometer and plain charge-coupled device (CCD) camera used in wild fire studies. However measurement of the reflectance at 970 nm has been rarely applied to estimate the water status of dead plant materials such as fallen branch, twig, and leaf. To test the possibility of applying water reflectance at 970 nm to estimate the water content (WC) in leaf litter, the reflectance in various WC values were measured in the leaf litter of three Quercus species (Q aliena, Q aliena, Q mongolica, and Quercus variabilis). The results showed that the WC in the leaf litter can be determined by reflectance water index (WI) in the three Quercus species (WC=1,450×WI-1,378.8, r=0.865). However, there was no interaction effect in the relationship between WI and WC among the litter of the three Quercus species.

참고자료

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