Characteristics of Woody Debris in Grass-Larix Gmelinii Successive Cutting Forest in Different Ages

Abstract

Abstract: By using two kinds of criteria and comparing the storage and the characteristics of the coarse woody debris,the storage of the coarse woody debris in the different aged grass-larix gmeliniiin successive cutting forest were studied.The results indicated that the storage of woody debris capacity was about 6.27～61.38 t/hm²,the density,volume and biomass of CWD derived from Harmon criterion were 499～900 trees/hm²,4.73～130.59 m³/hm² and 2.22～60.39 t/hm²,respectively,which were higher than that derived from LTER criteria by 31.15％～66.74％,2.66%～34.75％ and 2.96%～11.15％,respectively.With the increase of stand age,the volume of CWD derived from Harmon criterion exhibited feature as stand age increasing,both density and biomass of CWD showed a near irregular distribution.The density of CWD derived from LTER criterion decreased gradually (587,325 and 300 trees/hm²),the volume and biomass increased first and then decreased.With the increase of decay class,the CWD density of young forest and mature forest derived from Harmon criterion, the volume and biomass of young forest,near-mature forest and mature forest all increased first and then decreased.The Variation of CWD density,volume and biomass derived from LTER criterion are in consistency with Harmon criteria,only the decay class Ⅰ proportion slightly reduced.

Key words: Larix gmelinii, successive cutting forest, woody debris

CLC Number:

S718.5

WANG Fei, ZHANG Qiuliang, GAO Xiaowei, WANG Shuotao, GAO Wei, XU Yanyan. Characteristics of Woody Debris in Grass-Larix Gmelinii Successive Cutting Forest in Different Ages[J]. FOREST RESOURCES WANAGEMENT, 2013, (4): 94-99.

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