不同采伐强度后小兴安岭低质林土壤养分的灰色聚类评价  

S753Grey Clustering Evaluation of Soil Nutrients of Low-Quality Forest in Xiaoxing'an Mountain by Different Cutting Intensity

作　　者：张泱 曾翔亮[2] 董希斌[2] 宋启亮[2] 

机构地区：[1]黑龙江省铁力市人民政府,铁力152500 [2]东北林业大学

出　　处：《东北林业大学学报》2014年第2期21-24,共4页Journal of Northeast Forestry University

基　　金：林业公益性行业科研专项(201004043)

摘　　要：对小兴安岭低质林进行不同强度的采伐改造后，采用灰色聚类法对各样地的土壤养分进行综合评价。结果表明：样地Z1、Z2、Z6、Z7和对照样地（ CK）的土壤养分等级均为第3等级，样地Z3和Z4的土壤养分等级均为第2等级，样地Z5的土壤养分等级为第1等级；采伐强度太高或太低对低质林土壤养分的改善效果均不明显，而当采伐强度为41％～55％时，尤其是当采伐强度为55％时，土壤养分得到明显改善，最适宜小兴安岭低质林的改造。The transformation were conducted in low-quality forest of Xiaoxing’ an Mountain with different cutting intensity, and the grey clustering method was used for the comprehensive evaluation of soil nutrients in all kinds plots.The soil nutrient level of plots Z1, Z2, Z6, Z7 and the check plot CK are in the third rank, the soil nutrient level of plots Z3 and Z4 are in the seond rank, and the soil nutrient level of plot Z5 is in the first rank.Too high or too low cutting intensity can not im-prove the soil nutrients in the low-quality forest obviously , but when the cutting intensity is 41%-55%, especially 55%, the soil nutrients are significantly improved.Therefore, 55%of cutting intensity is the most suitable way for the transfor-mation of low-quality forest in Xiaoxing’an Mountain.

关 键 词：小兴安岭 低质林 采伐强度 土壤养分 灰色聚类法 评价 

分 类 号：S753[农业科学—森林经理学]