+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The use of near-infrared reflectance spectroscopy in litter decomposition studies

, : The use of near-infrared reflectance spectroscopy in litter decomposition studies. Annales des Sciences Forestieres (Paris) 49(5): 481-488

The biochemical nature of leaf litter is a key factor in regulation of its decomposition. Conventional wet chemical analysis of samples is destructive, time-consuming and expensive. The objective of this study was to evaluate the potentiality of near infrared reflectance spectroscopy (NIRS) for determining litter chemistry during the decomposition process using a wide range of species and decomposition stages. The litter of 8 species of evergreen and deciduous broad-leaved trees, conifers and shrubs were used in both laboratory and field experiments. Near-infrared reflectance measurements were made with an NIRS Systems 5000 spectrophotometer over the range 1100-2500 nm. Calibration samples were analysed for ash, carbon and nitrogen. Acid-detergent fiber (ADF) and acid-detergent lignin (ADL) were determined using Van Soest procedures. Stepwise regression (SR) calibrations and partial least squares (PLSR) calibrations were developed and compared as well as the effect of scatter correction. The PLS algorithm was used to create the predictive models using all the information in the spectrum to determine the chemical concentration. Using scatter correction always gave better results. Both regression methods provided acceptable validation statistics for C, N and ash. The PLSR had better prediction accuracy for ADF and ADL. For these two constituents, the improvement of SECV was 34 and 25%, respectively. Our results showed that NIRS is an effective tool to predict nitrogen, ash and proximate carbon fractions in decomposition studies and that PSLR method improves calibration compared with SR method.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 002530490

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Horak, I. G.; Louw, J. P.; Raymond, S. M.; Snijders, A. J., 1970: The anthelmintic efficacy of feed mash or pellets medicated with thiabendazole. Eight Dorper lambs, naturally infected with gastrointestinal trichostrongylids, were fed 1.8 kg of mash containing 0.552% thiabendazole, giving a dose rate of 55 mg/kg; after 2-7 days the animals were slaughtered and their worm burdens compared wi...

Cugnac, A. De., 1938: A remarkable anomaly in Melilotus altissima Thuil. In 1935 and 1938 the author found a form described as longistyle and parviflore; further, it is sterile.

Wang, Yanping; Ripperger, Juergen; Fey, Georg, H.; Samols, David; Kordula, Tomek; Wetzler, Meir; Van-Etten, Richard, A.; Baumann, Heinz, 1999: Modulation of hepatic acute phase gene expression by epidermal growth factor and Src protein tyrosine kinases in murine and human hepatic cells. As part of systemic inflammatory reactions, interleukin 6 (IL-6) induces acute phase protein (APP) genes through the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway. Epidermal growth factor (EGF), which contribut...

Caspar T.; Lin T P.; Spilatro S.; Preiss J.; Somerville C., 1988: Metabolic developmental and environmental regulation of beta amylase in leaves of wild type and starchless mutants of arabidopsis thaliana. Journal of Cellular Biochemistry Supplement (12 PART C): 197

Churchill, J. A.; Feeney, D. A.; Fletcher, T. F.; Osborne, C. A.; Polzin, D. J., 1999: Age and diet effects on relative renal echogenicity in geriatric bitches. Under controlled, but varied dietary conditions 35 geriatric, uninephrectomized, spayed Beagle bitches (dogs) observed for 4 years, renal cortical and renal medullary echogenicity was measured relative to hepatic and splenic echogenicity. The dogs...

Kobayashi, Tadao K.; Okamoto, Hajime; Ueda, Masami; Nishino, Toshihiro; Bamba, Masamichi; Kushima, Ryoji, 2002: Cytopathology of pregnancy-induced cell patterns in cervicovaginal smears. Acta Cytologica 46(1 Supplement): 158, January-February

Smirnov, Alexey V., 1999: An illustrated survey of Gymnamoebae isolated from anaerobic sediments of the Niva Bay. Twelve species of amoebae were found in cultures established from samples of mats of white sulphur bacteria from the Niva Bay (Baltic Sea, The Sound). Only one species, Vannella peregrina Smirnov and Fenchel, 1996 is strictly anaerobic. It is the...

Broekelmann, Thomas J.; Limper, Andrew H.; Colby, Thomas V., 1991: Transforming growth factor b1 is present at sites of extracellular matrix gene expression in human pulmonary fibrosis. Proceedings of the National Academy of Sciences of the United States of America 88: 42-6

Onkar Singh, 1993: Sugarcane clones with cold resistance. Eighty-eight promising clones were evaluated for cold tolerance in the laboratory at -2.5 to +2.0 degrees C and under natural field conditions during 43 frosty nights (average lowest minimum temperature 1.5 degrees C). Based on combined results of...

Anonymous, 2011: Effect of the administration of GnRH or hCG on time of ovulation and the onset of estrus-to-ovulation interval in sows in Thailand. The aim of the present study was to evaluate the control of ovulation by the administration of human chorionic gonadotropin (hCG) or gonadotropin-releasing hormone (GnRH) at the onset of estrus. Thirty-three multiparous sows housed under tropical...