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首页> 外文期刊>International journal of ecology & enviromental sciences >Modeling Silvipastoral System in Semi-arid Climate
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Modeling Silvipastoral System in Semi-arid Climate

机译：Modeling Silvipastoral System in Semi-arid Climate

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摘要

Growth and production modelling of tree/ grass in five trees namely, Acacia tortilis, Albizia amara, Albizia lebbeck, Dalbergia sissoo and Hardwickia binata associated silvipastoral systems have been studied. The tree/grass associated growth and production relationships have been established on the basis of initial ten-year data records. These relationships were integrated on a spreadsheet according to an assumed flowchart for the Silvipastoral situation. The predicted outputs in the form of prediction at different point of growth vis-a-vis input were compared in the form of IRR value. The study revealed that at 10-year rotation of Albizia lebbeck + c. ciliaris and Acacia tortilis + C. ciliaris, Stylosanthes hamata systems gave the maximum IRR value (42.75 and 40) whereas the Albizia amara associated silvipastoral system gave the lowest IRR (28). The same trend was continued in 15-year rotation also. But at the 20-year rotation, the Albizia lebbek and Acacia tortilis continue to predict the same trend but lowest IRR value was predicted as 28. Same trend was again observed at 25-year rotation. Through such modelling effort, it is concluded that Albizia lebbeck and Acacia tortilis associated silvipastoral systems are the most economical, with a predicted level of 47 IRR in Albizia lebbek. Thus, these models help us compare the economics of these systems by saving the cost of experimentation over the years.

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