نتایج جستجو برای: crop modeling

تعداد نتایج: 455787  

Journal: :Int. J. Applied Earth Observation and Geoinformation 2015
Rui Xiao Shiliang Su Gengchen Mai Zhonghao Zhang Chenxue Yang

Cash crop expansion has been a major land use change in tropical and subtropical regions worldwide. Quantifying the determinants of cash crop expansion should provide deeper spatial insights into the dynamics and ecological consequences of cash crop expansion. This paper investigated the process of cash crop expansion in Hangzhou region (China) from 1985 to 2009 using remotely sensed data. The ...

Journal: :Remote Sensing 2014
Jakob Geipel Johanna Link Wilhelm Claupein

Precision Farming (PF) management strategies are commonly based on estimations of within-field yield potential, often derived from remotely-sensed products, e.g., Vegetation Index (VI) maps. These well-established means, however, lack important information, like crop height. Combinations of VI-maps and detailed 3D Crop Surface Models (CSMs) enable advanced methods for crop yield prediction. Thi...

2015
Jignesh Patel Chetan Bhatt

Increased demand of farm products and depletion of natural resources compel the agriculture community to increase the use of Information and Communication Technology (ICT) in various farming processes. Agricultural Decision Support Systems (DSS) proved useful in this regard. The majority of available Agricultural DSSs a re either crop or task specific. Less emphasis has been placed on the devel...

1999
David G. Rossiter Susan J. Riha

Modeling inter-species competition is a natural application for dynamic simulation models of agricultural systems. We extended a dynamic simulation model of the soil-plant-atmosphere system, GAPS, to include the case where multiple plant species are growing in competition. The competition model was implemented as an object hierarchy which exchanges information with a crop model hierarchy by mea...

Journal: :آب و خاک 0
نجمه خلیلی کامران داوری امین علیزاده محمد کافی حسین انصاری

modeling of crop growth plays an important role in evaluation of drought impacts on rainfed yield, choosing an optimum sowing date, and managerial decision-makings. aquacrop model is a new crop model that developed by food and agriculture organization (fao), that is a model for simulation of crop yield based on “yield response to water“ with meteorological, crop, soli and management practices d...

Journal: :Remote Sensing 2013
Baburao Kamble Ayse Kilic Kenneth G. Hubbard

Crop coefficient (Kc)-based estimation of crop evapotranspiration is one of the most commonly used methods for irrigation water management. However, uncertainties of the generalized dual crop coefficient (Kc) method of the Food and Agricultural Organization of the United Nations Irrigation and Drainage Paper No. 56 can contribute to crop evapotranspiration estimates that are substantially diffe...

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