棲蘭山地區檜木天然林與保育更新林土壤性質的比較

Comparisons of Soil Properties between Cypress Nature Forest and Accelerated Regeneration Forest in Chilanshan Area

張瑀芳(Yu-Fang Chang) ； 蔡呈奇(Chen-Chi Tsai)

《宜蘭大學生物資源學刊》 4卷1期 (2008/06) Pp. 69-77

https://doi.org/10.6175/job.2008.41.17

摘要

The study area was located in the Chilanshan area in northeastern Taiwan. The study plots were set up respectively in Cypress Nature Forest and Cypress Accelerated Regeneration Forest along the 130 Forest Road. The objectives of this study were (1) to examine and compare the differences of soil characteristics between this two Cypress forests, and (2) to understand the soil characteristics of accelerated regeneration forest and proposed as the database and basis for further monitoring of the regeneration of cypress forest. The results of this study suggested that the main difference of soil properties between this two Cypress forests was the soil organic carbon content, and the changes of other soil properties, including soil pH, exchangeable bases, cation exchange capacity and base saturation percentage which were derived from the change of soil organic carbon. The similar soil characteristics of this two cypress forest were strongly acidic (pH＜3.3)、higher soil organic carbon contents, and lower base saturation (BS%＜30%). The investigation of vegetation compositions of study plot suggested that the stem and species of tree were similar in this two forest, and the stem, species, and basal area of timber and shrub were higher in cypress nature forest, but the frequency and species of herb were higher in cypress accelerated regeneration forest. The effects of soil properties of study plot on the growth of tree and timber (stem and species) were less, but it is greatly and important in the growth of shrub and herb vegetation. Also, the effects of soil properties on the growth of this two cypress forest were significantly in accelerated regeneration forest. In cypress nature forest, including soil organic carbon, exchangeable K, cation exchange capacity (CEC), and base saturation percentage (BS%) were more important soil properties affecting above-ground vegetation growth. Otherwise, the main growth affecting factors were exchangeable bases (K, Na, Ca, and Mg) in cypress accelerated regeneration forest.

關鍵字

檜木 ； 土壤 ； 土壤性質 ； 天然林 ； 保育更新地

並列摘要

The study area was located in the Chilanshan area in northeastern Taiwan. The study plots were set up respectively in Cypress Nature Forest and Cypress Accelerated Regeneration Forest along the 130 Forest Road. The objectives of this study were (1) to examine and compare the differences of soil characteristics between this two Cypress forests, and (2) to understand the soil characteristics of accelerated regeneration forest and proposed as the database and basis for further monitoring of the regeneration of cypress forest. The results of this study suggested that the main difference of soil properties between this two Cypress forests was the soil organic carbon content, and the changes of other soil properties, including soil pH, exchangeable bases, cation exchange capacity and base saturation percentage which were derived from the change of soil organic carbon. The similar soil characteristics of this two cypress forest were strongly acidic (pH＜3.3)、higher soil organic carbon contents, and lower base saturation (BS%＜30%). The investigation of vegetation compositions of study plot suggested that the stem and species of tree were similar in this two forest, and the stem, species, and basal area of timber and shrub were higher in cypress nature forest, but the frequency and species of herb were higher in cypress accelerated regeneration forest. The effects of soil properties of study plot on the growth of tree and timber (stem and species) were less, but it is greatly and important in the growth of shrub and herb vegetation. Also, the effects of soil properties on the growth of this two cypress forest were significantly in accelerated regeneration forest. In cypress nature forest, including soil organic carbon, exchangeable K, cation exchange capacity (CEC), and base saturation percentage (BS%) were more important soil properties affecting above-ground vegetation growth. Otherwise, the main growth affecting factors were exchangeable bases (K, Na, Ca, and Mg) in cypress accelerated regeneration forest.

並列關鍵字

Crypress ； soil ； soil properties ； nature forest ； accelerated regeneration forest