CAJ | 학술논문

为了将高光谱遥感技术应用到生态恢复监测，采用ASD Fields H H便携式野外光谱仪测量半干旱草原区内蒙古和林格尔县不同生态恢复阶段优势植物物种的高光谱数据，通过ViewSpecPro软件对原始光谱数据进行降维和去噪等处理，进行原始反射率、一阶微分分析，采用排序软件Canoco 4.5进行去趋势典范对应分析。结果表明，生态恢复早期的优势植物物种为狗尾草、小叶锦鸡儿，生态恢复5年的优势植物物种为猪毛菜、小叶锦鸡儿，生态恢复后期的优势植物物种为樟子松、猪毛菜，与实测结果一致。DCCA分析结果表明，生态恢复早期植被的冠层光谱值，特征波段主要为短波光，且各物种光谱值差异较大；生态恢复5年主要受1000～1050 nm波段反射率影响，生态恢复后期主要受1040～1075 nm波段的近红外反射率影响。采用DCCA方法能够直观反映不同生态恢复阶段优势物种的光谱特征。
위료장고광보요감기술응용도생태회복감측，채용ASD Fields H H편휴식야외광보의측량반간한초원구내몽고화림격이현불동생태회복계단우세식물물충적고광보수거，통과ViewSpecPro연건대원시광보수거진행강유화거조등처리，진행원시반사솔、일계미분분석，채용배서연건Canoco 4.5진행거추세전범대응분석。결과표명，생태회복조기적우세식물물충위구미초、소협금계인，생태회복5년적우세식물물충위저모채、소협금계인，생태회복후기적우세식물물충위장자송、저모채，여실측결과일치。DCCA분석결과표명，생태회복조기식피적관층광보치，특정파단주요위단파광，차각물충광보치차이교대；생태회복5년주요수1000～1050 nm파단반사솔영향，생태회복후기주요수1040～1075 nm파단적근홍외반사솔영향。채용DCCA방법능구직관반영불동생태회복계단우세물충적광보특정。
The objective of the research is to apply hyperspectral technique into eco-restoring monitoring .Through the ASD Fields HH portable field spectrometer ,the hyperspectral data of dominant plant species in vegetation at different eco-restoring stages in semi-arid grassland in Helin County ,Inner Mongolia were collected .The original spectrum reflected data were pretrea-ted by wavelet threshold denoising through ViewSpecPro software before analysis .Using the first derivative spectra between 660 and 800 nm ,and the methods of detrended canonical correspondence analysis (DCCA) by Canoco 4.5 software ,the canopy hy-perspectral datum of 6 dominant plant species was calculated .The results indicated that the dominant plant species at early suc-cession stage were Setariaviridis and Caragana microphylia ,at 5 years eco-restoring stage they were Salsolacollina and Ca-ragana microphylia and at late succession stage they were Pinus sylvestnis var .mongolica and Salsola collina ,same as field survey .The graph of DCCA indicated that the influential bands of dominant species canopy at early eco-succession stage were short bands ,with a large variation among species ,the influential bands at 5 years eco-restoring stage were near infrared bands between 1 000 and 1 050 nm ,and that at late stage were near infrared bands of 1 040~1 075 nm .The DCCA also showed obvi-ously differences in canopy spectrum among 6 dominant species ,and obviously differences among 3 eco-restoring stages .