regression species 中文意思是什麼

regression species 解釋
退化種
  • regression : n. 1. 復歸，回歸。2. 退步，退化。3. 【天文學】退行。adj. -sive ,-sively adv.
  • species : n. 〈sing. , pl. 〉1. 種類；【生物學】（物）種。2. 【邏輯學】種。3. 【原子能】核素。4. 【法律】形式。5. 【宗教】聖餐物。
  1. The investigation on the species and amount of the pest in burned forest in heihe area showed the plantation of pinus slyuestris var. mongolica and larix gmelinii were easily attracted by ips spp. and anoplophora spp. the relationship between the smoked height and diameter at breast height of poles and the occurrence of the pests was analyzed with binary logistic regression

    摘要文章通過對黑河地區過火林地的蟲害發生數量和種類的調查研究，表明樟子松和落葉松人工林在火燒后極易受到小蠹類和天牛類蛀干害蟲的攻擊。
  2. Based on multi - factor orthogonal designed field experiment, the ridge regression models of seed yield components and seed yield of the 6 grass species are founded through ridge regression analysis with big samples

    摘要採用多區組多因素正交試驗設計，通過大樣本嶺回歸分析求出6種禾本科牧草種子產量因子與產量的嶺回歸模型。
  3. In this paper, based on the soil water infiltration multifactorial influence tests with three species of soil texture and different husbandry condition and monofactorial influence tests with four species of soil texture in indoor, the basic infiltration characteristics, reduction infiltration mechanism and various factors are studied systematically. major factors influencing soil infiltration characteristics, resilience between influence factors and soil water infiltration parameter and influence priority are analyzed by mathematics statistics method, stepwise regression models with multiple units of soil water infiltration parameters are build up and verified

    本文基於大田三種質地、不同耕作條件下土壤水分入滲的多因素影響試驗和室內四種質地土壤條件下的單因素影響試驗，系統地研究了土壤水分入滲特性的變化過程，阻滲機理和影響土壤水分入滲特性的各種因素，藉助數理統計方法分析影響土壤水分入滲特性的主要因素，各影響因素與土壤水分入滲參數間的相關性及其影響的先後次序。建立、驗證了土壤水分入滲參數的多元逐步回歸模型。
  4. Analysis of species diversity and soil factors by single factor and stepwise regression revealed soil moisture, soil salt and soil ph have significant effects on species diversity ( / j < 0. 01 )

    分別對物種多樣性和土壤指標進行了單因子和多元逐步回歸分析，結果表明，土壤水分、鹽分和酸堿度對物種多樣性有顯著影響（ p < o 01 ） 。
  5. By using of the richness, diversity and evenness indices, combined with twinspan, dca, dcca, multi - factors regression, correlation analysis techniques and so on, species diversity and diversification mechanism were studied. the communities were classified into eight types by twinspan. the first axis of dca indicated basically the diversification of soil water, while the second axis indicated basically the disturbance degree by people. the correlations between n, organic matter, elevation and the first axis are negative association, and the others are positive

    通過豐富度指數、物種多樣性指數和均勻度指數，結合twinspan 、 dca 、 dcca排序，多元回歸和相關分析，研究了物種多樣性及其變化機制，把植物群落分為8個群落類型；物種多樣性指數的dcca第一軸基本上反映了土壤水分的變化，第二軸基本上反映了人類對群落的干擾程度，物種多樣性指數隨土壤水分的增加而增大，隨人類的干擾程度的增加而減小。
  6. Soil organic matter and nutrients significantly fit in form of binomial by single factor analysis, but the effect of soil organic matter on species diversity was not apparent by stepwise regression, indicating uncertainty and complex of direction and mechanism of soil organic matter on species diversity

    而土壤有機質及各種養分在單因子分析時顯著地擬合為二項式，多元回歸的結果顯示對多樣性的影響不明顯，說明有機質對多樣性的作用機理復雜、作用方向不確定。
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