Analysis of Climatic Effects on the Components of Forest Litterfall Production

doi:10.11924/j.issn.1000-6850.2014-0023

Abstract

Abstract: Litter acts as a connection between plants and soil and directly affects on the nutrient and energy cycling of forest ecosystems. Based on the data of the literature from 1977 in China, including annual litterfall production and climatic factors of forest, the author analyzed the influences of climatic factors on the components of forest litterfall production in natural and planted forests, respectively. The results showed that: correlation had reached significant or very significant among leaves, twig and fruit & flowers litterfall production regardless of in natural forest or planted forest (P<0.05, P<0.01). Correlation coefficients were higher between litterfall production components and climatic factors in natural forest than in planted forest. Annual mean minimum temperature had the better correlation with leaves, twig and fruit &flowers litterfall production in natural forest and their correlation coefficients were 0.51, 0.45 and 0.58, respectively (P<0.01). There was a remarkably negative correlation between bark litterfall production and annual mean wind speed in natural forest and its correlation coefficient was -0.76 (P<0.05)。Air temperature had obviously affected on leaves, twig and fruit &flowers litterfall production in planted forest, and their correlation coefficients were from 0.26 to 0.37 (P<0.05, P<0.01). Through PATH analysis, it was found that annual mean temperature, annual mean maximum temperature and annual mean minimum temperature were main factors affecting on leaves, twig and fruit &flowers litterfall production. There were differences in influence degree of air temperature on the components of litterfall production due to different source of forest types.

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