A Systems Analysis of the Global Boreal Forest: The southern boreal–northern hardwood forest border

作者: John Pastor , David J. Mladenoff

DOI: 10.1017/CBO9780511565489.010

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摘要: Introduction In this chapter we will examine the nature of southern boreal forest, explicitly its transition with cool temperate deciduous forest that occurs to south. Although mixed and conifer on portions several continents in northern hemisphere, it is most intact studied North America as hardwood biome (Braun 1950; Curtis 1959). Therefore, although describe zone other regions, concentrate American expression it. For convenience, also adopt shortened common name ‘northern hardwoods’ for largely south while recognizing certain conifers are important components forest. The contains extreme contrasts ecosystem properties corresponding locations different species within a mosaic landscape. These accentuated at boundary hardwoods conifers, which transitional forests Within these two biomes, each genus, some cases affects ways. Such include nutrient cycling productivity, disturbance type frequency, suitability an animal habitat. Consequently, there strong feedbacks between succession, dominance, resource limitation, regimes, trophic structure (Fig. 8.1). may be stabilizing or destabilizing, latter often causing cycles various times places.

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