卜闻
发表于 2025-3-23 12:37:30
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大方一点
发表于 2025-3-23 17:52:21
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organic-matrix
发表于 2025-3-23 18:44:56
Tomaž Pisanski,Brigitte Servatiusffusion in ecology is due to the work of Goodall (1954), Dagnelie (1960), van Groenewoud (1965), Orlóci (1966, 1973), Austin & Orlóci (1966), Ivimey-Cook & Proctor (1967), van der Maarel (1969), and others. Although PCA is a statistical method, in ecology it serves as an ordination technique in indi
新鲜
发表于 2025-3-24 00:17:08
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万神殿
发表于 2025-3-24 05:25:50
Comparative Territorial Politicshich are expressed in different ways. The use of compound terms such as population structure, age structure, ecological structure, competitive structure, production structure, size-class structure, dynamic structure, are more or less common in the literature. In texts describing vegetation structure
致词
发表于 2025-3-24 10:13:56
https://doi.org/10.1057/9780230292543rentiating them uses mostly subjective regrouping of relevés and species in the table and the rewriting of the table. The use of computers for the generation of ordered phytosociological tables is so far out of reach for most phytosociologists. The use of even simple numerical techniques without the
取之不竭
发表于 2025-3-24 11:35:40
https://doi.org/10.1057/9780230292543 information required to produce a short list of species to economize the analysis without unduly distorting the results. But the weights supplied have relevance only in the population for which they were determined. As further limitation, they can be applied as logical input only in certain methods
有罪
发表于 2025-3-24 18:09:37
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最有利
发表于 2025-3-24 19:47:37
Roma Harris,Nadine Wathen,Sally Wyattnquet (1964) method along the lines developed by R. Tüxen and collaborators in the 1930’s (which were first described in detail by Ellenberg 1956, see also Mueller-Dombois & Ellenberg 1974), many similar programs have been devised. They have been briefly reviewed by Westhoff & van der Maarel (1973),
发芽
发表于 2025-3-25 01:27:22
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