DOI: 10.1016/j.foreco.2015.08.018
Scopus记录号: 2-s2.0-84940049496
论文题名: Landscape-scale analysis of nutritional traits of New Zealand tree foliage using near-infrared spectroscopy
作者: Windley H.R. ; Foley W.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 357 起始页码: 161
结束页码: 170
语种: 英语
英文关键词: Forest conservation
; Landscape ecology
; Management
; Monitoring
Scopus关键词: Calibration
; Conservation
; Ecology
; Forecasting
; Infrared devices
; Least squares approximations
; Management
; Monitoring
; Near infrared spectroscopy
; Nitrogen
; Plants (botany)
; Calibration techniques
; Ecological investigations
; Foliar concentration
; Forest conservation
; Landscape ecology
; Modified partial least squares
; Near infrared reflectance spectroscopy
; Nutritional qualities
; Forestry
; calibration
; concentration (composition)
; conservation management
; digestibility
; dry matter
; foliage
; herbivore
; infrared spectroscopy
; introduced species
; invasiveness
; landscape ecology
; marsupial
; nitrogen
; nutritional status
; performance assessment
; pest control
; preference behavior
; Conservation
; Ecology
; Forests
; Management
; Monitoring
; New Zealand
; Phalangeridae
; Trichosurus vulpecula
英文摘要: Near-infrared reflectance spectroscopy (NIRS) was used to predict the nutritional quality of tree foliage from a New Zealand forest inhabited by the introduced common brushtail possum (Trichosurus vulpecula) as part of a study to understand the relationship between possum browsing and the nutritional quality of foliage. The traits of interest were the foliar concentrations of total nitrogen, in vitro dry matter digestibility, and available nitrogen (with and without incubation with polyethylene glycol to indicate the effect of tannins). A total of 1399 samples from five plant species were studied, with 650 included in a calibration set and 50 in a separate validation set. We evaluated the performance of classic (GLOBAL) and alternative (LOCAL) calibration techniques. Both were successful, although a GLOBAL equation incorporating all calibration samples was used for the final predictions. Modelling of the spectra enabled the nutritional quality of the foliage samples to be estimated with coefficients of determination (r2) of 0.83-0.99 using modified partial least-squares regression. Nutritional quality varied both within and between five tree species for which possums show varied preferences. The predictive models developed in this study facilitate landscape-scale ecological investigations into the role of plant nutrients on the behaviour and demography of introduced herbivores. This provides new opportunities to test theories on invasiveness and to prioritize landscapes for conservation and possum control. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65284
Appears in Collections: 影响、适应和脆弱性
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作者单位: Research School of Biology, The Australian National UniversityACT, Australia
Recommended Citation:
Windley H.R.,Foley W.J.. Landscape-scale analysis of nutritional traits of New Zealand tree foliage using near-infrared spectroscopy[J]. Forest Ecology and Management,2015-01-01,357