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投影尋蹤分類模型在作物補償效應(yīng)評價中的應(yīng)用
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郝樹榮,，副教授,，博士,，主要從事節(jié)水灌排理論與技術(shù)研究,，Email: [email protected]

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國家自然科學(xué)基金資助項目（50309003,、50839002）


Comprehensive Evaluation on Compensatory Effects of Water Recovery  after Drought Based on Projection Pursuit Classification Model
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    摘要:

    為了解決作物旱后復(fù)水補償效應(yīng)評價和優(yōu)選的不確定性,，提高補償效應(yīng)評價模型的分辨率,， 提出了投影尋蹤分類模型，并采用變異和動態(tài)信息素更新蟻群算法尋找最優(yōu)的投影方向,，用 最佳投影方向信息研究各評價指標(biāo)對補償效應(yīng)的貢獻(xiàn)率,，發(fā)現(xiàn)光合速率的大小直接反應(yīng)了補 償生長的能力，是影響補償效應(yīng)的關(guān)鍵因子,，與以往研究結(jié)論相符，且適度脅迫復(fù)水后第 5天表現(xiàn)出的補償效應(yīng)最佳,。

    Abstract:

    An effective projection pursuit classification model is suggested to evaluate co mpensatory effects of water recovery after drought in order to avoid the uncerta inty of the evaluation and the optimization, and to improve the accuracy of the evaluating model. It adopts an ant colony algorithm based on mutation and dyna mic pheromone updating to find the best projective direction, and then uses the best projective direction to calculate the contribution of each evaluation index to the compensatory effects. The test results showed that photosynthetic rate d irectly reflected the capacity of compensatory growth. Thus it is a critical f actor for compensatory effects, which conformed to the previous studies. The opt imal compensatory effects appeared in the fifth day after appropriate rewatering . 

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郝樹榮,郭相平,張展羽.投影尋蹤分類模型在作物補償效應(yīng)評價中的應(yīng)用[J].農(nóng)業(yè)機械學(xué)報,2010,41(1). Hao Shurong, Guo Xiangping, Zhang Zhanyu. Comprehensive Evaluation on Compensatory Effects of Water Recovery  after Drought Based on Projection Pursuit Classification Model[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(1).

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