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AGROBIODIVERSITY ENHANCEMENT FOR SUSTAINABILITY OF TROPICAL UPLANDS. An Evaluation of Agricultural Land Use in Liliw, Laguna, Philippines

Формат:      Страниц 244
     мягкая обложка
Автор:
Amparo M. W.    
Издательство:
Книга по Требованию    
Год:2010
Цена:
3051 руб
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A methodological framework for assessing agricultural land use in the tropical uplands was tested in an upland area in the province of Laguna, Philippines. The aim is to explore the potential of enhanced agrobiodiversity as a management alternative for agricultural land use in the uplands in terms of environmental protection, productivity and acceptability. The Logit model analysis showed further that leadership quality and land ownership will likely influence diversified production but personal characteristics like years of farming experience, other livelihood sources, land size, awareness of land degradation and effect of agrochemicals on farm workers' health have no likely influence on the diversity of production systems. Despite the environmental and economic advantages of enhanced agrobiodiversity, there are a number of weaknesses and barriers to its further development and implementation in the tropical uplands. Results showed that diversifying production systems through integration of horticultural trees and vegetables protects the topsoil, reduces nutrient wastage and is more profitable than non-diversified production system.
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Установки форматов объектов системы MathCAD
Под эволюцией математических выражений подразумевается их активность. Напоминаем, что обычно математические выражения активны и выполняют определенные действия. Однако, используя опцию Dissable Evalu io (Отключение эволюции), выражение можно сделать пассивным, т. е. просто комментарием. Рис. 6. 13 Окно свойств с включенной панелью Calcula io Еще одно важное свойство математических выражений — их оптимизация. Опция E able Op imiza io (Включить оптимизацию) включает режим оптимизации. При этом выражение, если оно вычисляется, представляется в аналитическом виде всегда, когда это возможно. Это свойство может привести к заметному ускорению вычислений в тех случаях, когда оптимизирующее выражение проще исходного. Особенно заметен выигрыш в скорости вычислений при использовании функций (например, функций вычисления интегралов или производных) численными методами. 6. 9. Установка формата двумерной графики (X-Y Plo ) Позиция Graph в подменю Forma задает форматы графиков. Начнем с операции X-Y Plo . (Формат декартовых графиков). Она выводит в центр текущего окна окно с опциями формата графиков 2D-типа (см. рис. 6. 14). Следует помнить, что для изменения формата уже построенного графика необходимо выделить его.


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