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ISBER/MesoAmerican Research Center ISBER/MesoAmerican Research Center, University of California Santa Barbara ISBER/MesoAmercan Research Center, UCSB 1044 North Hall Santa Barbara CA 93106-2150 Ford@marc.ucsb.edu US 1(805)893-8191 1(805)896-5677 withheld ISBER/MesoAmerican Research Center, University of California Santa Barbara Shapefile 5.636 Date: 2008 Created by: Elise Sirjean Projection: NAD83_UTM_Zone_16N The El Pilar Project has been conducting research at El Pilar, Belize and Guatemala since 1993, and was founded on a base of survey work that goes back to 1983. This unusual archaeological program recognizes the present environment as a part of the ancient Maya past. Our mission is the preservation and conservation of endangered resources through local and international education. Addressing tensions between culture and nature, we use the past as a reference to build a responsible future. Weaving together traditional knowledge and practice with scientific inquiry and interpretation, we promote a deeper awareness of heritage through local partnership. The UCSB Maya Forest GIS is an essential tool to organize and use the numerous resources involved in our studies, and provide reliable datasets for the project. Please acknowledge the MesoAmerican Research Center, University of California, Santa Barbara in any derived data product, reports, or publications. Mesoamerica Maya ISBER/MesoAmerican Research Center, University of California Santa Barbara ISBER/MesoAmercan Research Center, UCSB 1044 North Hall Santa Barbara CA 93106-2150 Ford@marc.ucsb.edu US 1(805)893-8191 1(805)896-5677 withheld <DIV STYLE="text-align:Left;"><DIV><DIV>Please acknowledge the MesoAmerican Research Center in any derived data product, reports or publications.</DIV></DIV></DIV> Version 6.2 (Build 9200) ; Esri ArcGIS 10.3.0.4322 Soils of the Belize River Area vector digital data 2008-07-02T00:00:00 2010-09-09T00:00:00 ALo17L_SoilsRedigitNAD83.shp 1 -89.160897 -88.267926 17.668203 17.011696 <DIV STYLE="text-align:Left;"><DIV><DIV>Soil information for the Belize River based on published soil maps (Birchall 1979). The original digitized soil map was created under the direction of Dr. Scott Fedick at UC Riverside (1995). These data were updated and corrected by Elise Sirjean from École Supérieure des Géomètres et Topographes, Le Mans, France for her Engineering Thesis (2003). The following information discusses Drainage, Fertility, Hand Class, and Mechanical Class for better understanding.Drainage. Aerobic respiration in roots is affected by drainage characteristics of the soil. Inadequate drainage prevents the development of the root system, decreases the yield of plants, and may lead to death of roots. Less than well-drained soils are characterized by faint to well-developed mottling in the profile. Excessive drainage is also a limiting factor due to loss of moisture. Drainage has been ranked as follows: 1 = well drained, 2 = moderately well drained or very freely (excessively) drained, 3 = imperfectly to poorly, drained, 4 = poorly drained to very poorly drained, and 6 = Urban.Fertility. Fertility is a complex property of soil, determined by the amount and availability of many essential nutrients and trace elements. Factors considered in the evaluation of fertility include cation-ex-change capacity, base saturation, percentage of organic matter, available phosphorus, and pH. Rankings for fertility generally follow those ascribed to soil types by Birchall and Jenkin (1979) and Jenkin et al. (1976), and are as follows: 1 = high fertility,2 = moderate fertility, 3 = low fertility, 4 = infertile, and 6 = Urban. Hand Class. Traditional Maya farmers of today prefer soils that are easy to cultivate, well drained, and gently sloping. Stone inclusions (stoniness) and bedrock exposures (rockiness) are not considered limiting factors and are, in fact, often viewed as indicators of good agricultural lands. Least desirable are poorly drained soils (heavy clay) that are difficult to cultivate and generally associated with flatlands or gently undulating hills underlain with clay marls. Even soils that are high in native fertility will be avoided if drainage and workability limit hand cultivation. Hand Class divisions are rated 1-5 where 1 = excellent, 2 = good, 3 = moderate, 4 = poor, 5 = very poor, and 6 = Urban. Mechanical Class. Mechanical cultivation is severely limited by bedrock exposures, shallow depth to bedrock, stoniness of a degree that interferes with tillage, and slope. Soils that are fertile, yet difficult to cultivate by hand, such as those that are less than well drained or of high clay content, do not limit mechanical cultivation. Hence, we see that soils considered most suitable for mechanical cultivation outside of the alluvial bottoms are generally considered least suitable for hand cultivation. Mechanical Class divisions are rated 1-4 where 1 = excellent, 2 = good, 3 = moderate, 4 = poor, and 6 = Urban. Parent Material Key:1 = Alluvium2 = Pleictocene Coast3 = Limestone4 = Marl5 = Marl/Limestone6 = PleistoceneBirchall, C. J. and R. N. Jenkin1979 The Soils of the Belize Valley, Belize, Vol. 1 and 2. Land Resources Development Centre. Copies available from Supplementary Report 15.Fedick, Scott L1995 Land Evaluation and Ancient Maya Land Use in the Upper Belize River Area, Belize, Central America. Latin American Antiquity6(1):16-34.Sirjean, Elise 2003 Creation and Validation of a Predictive Model of Ancient Maya Settlements with a Statistical Method Master's thesis, Ecole Superieure des Geometres et Topographes, Conservatoire National des Arts et Metiers, Le Mans, France.</DIV></DIV></DIV> SoilsAgricultureMaya ForestBelize River Valley dataset EPSG 8.2.6 4025 Simple FALSE 4025 TRUE FALSE 20181010