Response Of Plant Phenology To Climatic Change In Huanren County

The phenology is the science studying mutual concern among plant, animal and the periodic change of ambient condition. Recent 100 years, especially after the Second World War, human activity being strengthen, lead to the global climatic change happened. Plant is very sensitive to climatic change, can reflect extremely tiny change of environmental factor. Climatic change affects the plant in the land with sprout, leaf, bloom and defoliation, have caused grave effects on ecological balance. Study the response of plant phenology to Climatic Change, can provide botany, agriculture and forestry with scientific data.Huanren County is located in Northeast border of Liaoning province in China, being transition between Changbai Mountain and North China plant zone, has coniferous forest, broadleaf trees, deciduous trees and evergreen trees, with obvious season characteristic. Research on Plant Phenology in Huanren County is very important. In the paper we have collected climatic data and monitor data about plant phenology from 1980 to 2004 of Huanren County, analyze changing characteristic of temperature and precipitation, and discuss the effect on phenology of Populus canadensis Moench, Armeniaca vulgaris ,Plantain, Taraxacum officinale's with climatic change by SPSS. Research indicated: The main climate factor affecting plant Phenology is the temperature. With the temperature rising, plant's growing period extends. The arbor's phenology changes more than the herb's, especially with it's beginning earlier in spring. The arbor's phenology in spring has correlativity with the temperature in spring, has notable correlativity nearly with the temperature in winter.The climatic change will lead to plant phenology's change, which we should schedule the agriculture and forestry according to. At the same time, climatic forecasting has important value to guiding agriculture and forestry.