A Functional, Factorial Approach to Plant Ecology

摘要: Plant ecology is concerned with interrelations of plants and their environments. This paper proposes a scheme for considering the qualitative aspects these some rigor completeness. It also makes such amenable to quantitative treatment. The proposed based on theory that specific environmental factors exist they determine characteristics vegetation. theory, implicit in plant ecological literature, can be elaborated explain empirically determined propositions concepts ecology. concept "interrelations" used by ecologists interpreted as "function" science. two ideas are basically one. Therefore, this approaches study mathematical functions which relate vegetation its environment. More precisely, properties or groups we conveniently call "vegetation determining factors." methods suggested here may appear contradict holocoenotic belief exemplified Cain's (1944: 19) statement: ". . complex among factors, between them organism, physiological morphological interrelations, defy solution exact terms causation. Ecological problems not only difficult because interaction responses, but really insoluble sense." However, approach stresses establishment functional possible, provided one restricts causation (groups vegetation) deliberately omits causes variations themselves. Causes considered parts sciences climatology, geology, geomorphology, pedology, anthropology, human history, organic evolution, historical geography; left outside treatment In an etymological sense ecological, ecology-which subject paper. Solution environment developed along line Jenny (1930, 1941, 1946) examination soils relation basic thought many it stem directly from Jenny. writer very gratefully acknowledges primary debt, active encouragement Dr. has given expansion his own ideas, help manuscript. Discussions Drs. H. Jenny, R. L. Crocker, N. C. W. Beadle 1949, paper's points, were attended briefly who appropriated mutual conclusion identifying flora independent aspect cover; dependent aspect. I wish thank all three men criticisms opportunity discussion. should blamed following presentation, implied agree it.