川中丘陵区人工柏木林灌草生物多样性研究
Research on Shrub and Grass Biodiversity of Artifial Cypress Plantations in Hilly Areas of Central Sichuan
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摘要: 川中丘陵区地处长江上游。该区域是长江上游生态屏障的重要构成部分。灌草层作为森林生态系统中一个不可缺少的组成部分,在截持径流、保水保土、维持生物多样性等方面发挥着重要作用。本文以长江上游川中丘陵区主要林分类型——桤柏混交林以及由桤柏混交发展而来的柏木纯林为研究对象,从生物多样性角度,研究了20a~70a的人工柏木林下灌草层生物多样性,为该区域和类似区域人工林物种多样性保育提供理论依据,同时也为川中丘陵区人工柏木林健康经营提供理论依据。Abstract: The hilly areas of central Sichuan Basin are located in the upper reaches of the Yangtze River. The stand in these areas is an important component of the ecological barrier for the upper reaches of the Yangtze River. The Shrub and grass layers as an indispensable part of forest ecosystems have a great function on improving the interception of runoff and maintenance of biological diversity and conserving water and soil. In this paper,the main stand types (mixed alder and cypress plantation and pure cypress forest developed from mixed alder and cypress plantation) are used as the study objects,and researches are conducted on the species diversity of shrub and grass layers under the mixed alder and cypress plantation. These results will provide a theoretical basis for the species diversity conservation and the healthy management of artificial cypress plantations in these regions and similar areas.
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