Statistics for Spatial Data.

Climate change 2014 - Synthesis Report

▶ Addresses a wide range of timely environment, economic and energy topics ▶ A forum to review, analyze and stimulate the development, testing and implementation of mitigation and adaptation strategies at regional, national and global scales ▶ Contributes to real-time policy analysis and development as national and international policies and agreements are discussed and promulgated ▶ 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again

Mitigation and Adaptation Strategies for Global Change

Nature And Properties Of Soils

B6nassy, C., 1955. R6marques sur deux Aphelinid6s: Aphelinus mytilaspidis Le Baron et Aphytis proclia Walker. Annls l~piphyt. 6: 11-17. Lord, F. T. & MacPhee, A. W., 1953. The influence of spray programs on the fauna of apple orchards in Nova Scotia II. Oyster shell scale. Can. Ent. 79: 196-209. Pickett, A. D., 1946. A progress report on long term spray programs. Rep. Nova Scotia Fruit Grow. Ass. 83 : 27-31. Pickett, A. D., 1967. The influence of spray programs on the fauna of apple orchards in Nova Scotia XIV. Can. Ent. 97: 816-821. Tothill, J. D., 1918. The predacious mite Hemisarcoptes malus Shimer and its relation to the natural control of the oyster shell scale Lepidosaphes ulmi L. Agric. Gaz. Can. 5 : 234-239.

http://link.springer.com/content/pdf/10.1007/BF01976688.pdf

Soil enzymes: Kuprevich, V. F. & Shcherbakova, T. A.: Translated from the Russian edition (1966), published by the Indian National Scientific Documentation Centre, New Delhi 1971. 392 pp., offset printing from type script, paper cover. Obtainable from U.S. Department of Commerce, National Technical Information Service, Springfield, Va. 22151

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Introduction to the special issue on fire impacts on hydrological processes

John Thornes found that scrubland (matorral) was a key factor to control soil erosion on Mediterranean mountains. His research works inspired many scientist that researched the impact of scrubland changes and management on semiarid ecosystems. An experiment carried out on the El Teularet-Sierra de Enguera experimental station in 2004 show the erosion rates on a 30-years abandoned orchard with dense vegetation cover of Ulex parviflorus and Cistus albidus and a 20-year old fire affected Maquia with Quercus coccifera, Pistacia lentiscus and Juniperus oxycedrus. The 8 (4 at each treatment) plots (1, 2, 4 and 16 m2) under 715 mm of natural rainfall contributed with low runoff, sediment concentration and soil erosion. These measurements confirm the John Thornes’ idea: matorral is an efficient vegetation cover protection on Mediterranean ecosystems.

El matorral como protector del suelo y los recursos hídricos en la Sierra de Enguera. Valecia. España. Implicaciones económicas de su manejo

It is well known that forest fires affect physico-chemical characteristics of soils. However, few investigations have explored the effects of human-caused fires on soil erosion processes, particularly for the parameters used in rill erosion on steep slopes. To fill this gap, this study has evaluated the effects of human-caused fires on the rill detachment capacity (Dc) and rill erodibility (Kr) in the burned soils, compared to the unburned soils, as control soils, in a forest of Guilan province (northern Iran). For measuring Dc, the slopes (3.9, 9.1, 15.3, 23.9, and 32.7%) and water discharges (0.28, 0.38, 0.46, 0.54, and 0.63 L m−1 s−1) were adjusted to the desired values using a laboratory flume. Moreover, three properties of soils including the organic matter, bulk density and aggregate stability were determined. The results showed that Dc and Kr were significantly higher in the burned soils, compared to the unburned soils (both more than twice), as the consequence of the significant changes in organic matter content, bulk density and aggregate stability (p < 0.01). Compared to unburned soils, when soil organic matter and aggregate stability decrease, Dc increases in burned soils and these differences led to rill development. These changes in soil properties were confirmed by principal component analysis, which did show a clear discrimination between the burned and unburned sites. The model developed can predict the rill detachment capacity according to a simple linear relationship of the selected soil properties and may be used for an appropriate hydrological management of forest soils. 

Modelling effects of human-caused fires on rill detachment capacity based on surface burning of soils in forest lands

(1) Dipartimento di Scienze Agrarie e Forestali, Università degli Studi di Palermo, Italy. agata.novara@unipa.it, luciano.gristina@unipa.it, (2) Departamento de Investigación Aplicada y Extensión Agraria. IMIDRA. Finca Experimental El Encín. Alcalá de Henares, Spain. andres.garcia.diaz@madrid.org, (3) Soil Erosion and Degradation Research Group, Department of Geography, University of Valencia, Valencia, Spain. artemio.cerda@uv.es / www.soilerosion.eu

Artemi Cerdà

Papers

Introduction to the special issue on fire impacts on hydrological processes

El matorral como protector del suelo y los recursos hídricos en la Sierra de Enguera. Valecia. España. Implicaciones económicas de su manejo

Modelling effects of human-caused fires on rill detachment capacity based on surface burning of soils in forest lands

Avatar' remarks on the carbon input threshold in the sloping croplands

Assessing Wildfire Vulnerability of Vegetated Serpentine Soils in the Balkan Peninsula