Access the full text.
Sign up today, get DeepDyve free for 14 days.
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
Mapping total nitrogen in ash after a wildland fire: a microplot analysis Nitrogen (N), due its low temperature volatilization, is one of the elements most vulnerable to fire. This effect depends on fire severity, which varies depending on biophysical conditions which can be heterogeneous across the landscape. Hence, fire effects on N can be variable. The aim of this study was to establish the ash total nitrogen (TN) spatial variability in a microplot designed in a burned area, and to test several methods in order to identify the most accurate one for interpolating the variable. In total, we selected four deterministic interpolation methods - inverse distance to a weight (IDW), with the weight of 1, 2, 3, 4 and 5, local polynomial (LP), with the power of 1 and 2, global polynomial (GP), radial basis functions (RBF) - spline with tension (SPT), completely regularized spline (CRS), multiquadratic (MTQ), inverse multiquadratic (IMTQ) and thin plate spline (TPS) - and two geostatistical methods: ordinary kriging (OK) and simple kriging (SK). In total, we tested 15 techniques. Ash TN was negatively related to fire severity showed a good spatial structure across the plot. The linear model was the best, which means that the variability of ash TN content increased in all the area of interest. The highest concentration of TN was observed in the northeast part of the plot and the lowest in the Southwest. From all test methods, MTQ was most accurate, and IDW5 was the worst predictor. In general, RBF and the geostatistical methods were most precise and IDW was less accurate, which means that ash TN distribution has some specific features and does not exhibit a small-scale variation. The distribution of the variable depends on species distribution, temperature and probably on vegetation moisture during fire evolution.
Ekologija – de Gruyter
Published: Dec 1, 2010
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.