摘要
对德宏州1997～2010年间营造的西南桦人工林进行调查,全州西南桦人工林面积达8.381万hm2。随机抽取72块样地进行调查,并对14株解析木进行分析,推算出8.381万hm2西南桦蓄积量为460.65万m3;达到工艺成熟的平均林龄为20 a,平均胸径为26 cm,蓄积量将达3 467.4万m3,产值达到350亿元。平均产值41.68万元/hm2,木材生产效益显著。
Based on a survy on Betula alnoides plantation of 1997 to 2010, the Betula alnoides plantation area was 83, 810hm^2 in Dehong Prefecture, Yunnan Province. Randomly choosing 72 sampling plots in which 14 trees were taken to estimate the timber volume, results showed that timber storage was 4, 606, 500 m^3 among 83, 810 hm^2 plantation. The average tree age of mature forest would be 20 year, average DBH could grow to 26 cm, and the timber volume was up to 34, 674, 000 m^3 , the output value would be 350 hundred million Yuan. Unit area output could be 416, 800 Yuan pur hm^2. The economic benefit would be significant.
出处
《林业调查规划》
2013年第3期34-39,共6页
Forest Inventory and Planning
关键词
西南桦
人工林
木材效益
德宏州
Betula alnoides
plantation
timber output and value
Dehong prefecture
