Download or read book Humedad del suelo en plantaciones forestales de alta densidad y r pido crecimiento inicial written by Marisel Quintero Castillo and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: En tres predios forestales de la Región del Biobío, provincia de Ñuble: comuna de Ninhue predio LLohué, comuna de Yungay predio Santa Rosa y comuna de Bulnes predio Santa Leonor, se analizó la extracción humedad del suelo y su efecto sobre la producción de biomasa durante dos temporadas, en cinco especies de plantaciones forestales de rápido crecimiento inicial (Eucalyptus nitens, Eucalyptus globulus, Eucalyptus camaldulensis, Acacia melanoxylon y Acacia dealbata) y de alta densidad de plantación (5.000, 7.500, 10.000 y 15.000 árboles ha-1), a partir de la cuarta temporada de medición. Mediante neutrometría, se determinó la variación temporal del contenido de humedad del suelo hasta 270 cm de profundidad. Con antecedentes de precipitación y mediante la ecuación de balance hídrico en el suelo, se obtuvo la evapotranspiración de los árboles. Los menores valores de retención de agua en el suelo se encuentran en Santa Rosa (Yungay), al ser suelos más arenosos y la mayor retención de humedad se presentó en los suelos más arcillosos de Santa Leonor (Bulnes). LLohué presentó un comportamiento distinto a lo esperado con valores del contenido de humedad del suelo menores a pmp. Se analizó la relación entre la extracción de agua y el diámetro a la altura de tocón y biomasa. Las especies de Eucalyptus presentaron mayores rendimientos que las Acacias en todos los predios y en todas las densidades de plantación.

Download or read book Sri Ram Aiyer written by and published by World Bank Publications. This book was released on with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Times Gone By written by Vicente Pérez Rosales and published by Oxford University Press. This book was released on 2003-05-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: These memoirs trace the wild and adventurous life of Pérez Rosales from his childhood up to the 1860s. During that approximately half-century he saw and did more than a dozen ordinary men. At age eleven in Argentina he witnessed the executions of Luis and Juan Jose Carrera. From there, his activities and adventures took him on several journeys on sailing vessels around Cape Horn; to Paris, where he witnessed the July revolution of 1830; to various commercial endeavors including a distillery, the practice of medicine, and cattle smuggling; into service as an advisor to an Argentine warlord; as a miner for precious metals in the north of Chile; as participant in the California Gold Rush in 1849; as director of the government's project for German immigration and settlement in the wild south of Chile; and also as Chilean consul and immigration agent in Hamburg. Around the world, Rosales lived through many of his era's watershed moments. His exciting memoirs offer a chance to relive the rush and chaos of these times--from a much safer vantage.

Download or read book Pedodiversity written by Juan José Ibáñez and published by CRC Press. This book was released on 2013-04-08 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil diversity (pedodiversity) is part of our natural and cultural heritage. The preservation of the pedosphere is essential for the protection of the biosphere and the Earth's systems, the regulation of climate, and for world food security. In this book, reputed international experts discuss the state of the art of pedodiversity analysis-analyzing

Download or read book Encounters with Popular Pasts written by Mike Robinson and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is based on the recognition that heritage is popular and popular culture is now readily transformed into heritage, whose meanings and myths reshape social life and political and economic realities, as well as re-make "tradition". The papers in this volume consider: What does popular heritage look like? To whom does it speak? Is it active in dissolving class and cultural boundaries or just in reproducing new ones? How do societies manage a heritage that is fluid, immediate and that straddles extremes of serious conflict and hedonistic frivolity? When and under what circumstances is the creation and expression of new cultural forms - popular culture - capable of being transformed into heritage?