Application tryout of chlorophyll meter SPAD-502 in forestry

Abstract

Abstract: Chlorophyll is the pigment for plant photosynthesis,and its traditional measuring method is spectrophotometry.In this research,portable chlorophyll meter SPAD-502 was used to measure the seasonal changes of the greenness(SPAD) of 4 broad-leaved tree species under larch(Larix gmelinii) plantations,with the correlation between SPAD value and chlorophyll content measured by spectrophotometry investigated.The results showed that there was a significant correlation between SPAD value and chlorophyll content,indicating that SPAD value could well reflect the changes of chlorophyll content in tree foliage,and it was feasible to measure the chlorophyll content by chlorophyll meter instead of spectrophotometry.Chlorophyll meter SPAD-502 should be used broadly in forestry research because of its convenience to carry,simple and rapid measurement,and no damage to leaves.

Key words: eco-environment quality, national contiguous special poverty-stricken areas, economic poverty, coupling coordination degree, coupling degree, spatial differentiation.

CLC Number:

JIANG Lifen, SHI Fuchen, WANG Huatian, ZU Yuangang. Application tryout of chlorophyll meter SPAD-502 in forestry[J]. cje, 2005, (12): 1543-1548.

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