吉林林业科技
吉林林業科技
길림임업과기
JILIN FORESTRY SCICNCE AND TECHNOLOGY
2013年
4期
26-29,50
,共5页
草河口%人工红松林%生长规律%自然稀疏
草河口%人工紅鬆林%生長規律%自然稀疏
초하구%인공홍송림%생장규률%자연희소
Caohekou%man-made Pinus kreansis forest%growth rhythm%natural thinning
以人工红松林为对象，对其自然生长和自然稀疏规律进行研究，结果表明：9～13 a生时林分平均直径年生长量达到最高峰，林分平均树高年生长量在9～28 a生时达到最高峰，林分蓄积量从18～28 a生开始进入速生期，至54 a生时仍保持平稳状态。人工红松林自郁闭后，每隔10～15 a间出现1次自然枯死高峰期。林木分杈从9 a生开始，分杈率仅为0．03％，至54 a生时高达30．00％。28 a生以前其径级分配呈威布尔分布，30 a生以后分布无规律性。9～13 a生林分的径级离散度高达1．52～1．19，54 a生时仅为1．03。
以人工紅鬆林為對象，對其自然生長和自然稀疏規律進行研究，結果錶明：9～13 a生時林分平均直徑年生長量達到最高峰，林分平均樹高年生長量在9～28 a生時達到最高峰，林分蓄積量從18～28 a生開始進入速生期，至54 a生時仍保持平穩狀態。人工紅鬆林自鬱閉後，每隔10～15 a間齣現1次自然枯死高峰期。林木分杈從9 a生開始，分杈率僅為0．03％，至54 a生時高達30．00％。28 a生以前其徑級分配呈威佈爾分佈，30 a生以後分佈無規律性。9～13 a生林分的徑級離散度高達1．52～1．19，54 a生時僅為1．03。
이인공홍송림위대상，대기자연생장화자연희소규률진행연구，결과표명：9～13 a생시림분평균직경년생장량체도최고봉，림분평균수고년생장량재9～28 a생시체도최고봉，림분축적량종18～28 a생개시진입속생기，지54 a생시잉보지평은상태。인공홍송림자욱폐후，매격10～15 a간출현1차자연고사고봉기。림목분차종9 a생개시，분차솔부위0．03％，지54 a생시고체30．00％。28 a생이전기경급분배정위포이분포，30 a생이후분포무규률성。9～13 a생림분적경급리산도고체1．52～1．19，54 a생시부위1．03。
Man-made Pinus kreansis forest was taken as object to research on natural growth and natural thinning law ,the results indicated that the annual average diameter growth of forest stand reached peak at the age of 9~13 years, the annual average height growth of forest stand reached peak of 9~28 years, the standing stock of forest stand entered the fast -growing period at the age of 18~28 years, it still kept state at the age of 54 years.After crown closure, natural death peak occurred once in 10~15 years.Stem divergence of Pinus kreansis started from 9 th years, and the rate was 0.03%, the rate reached up to 30.00%at the 54 th years. Before 28 years old , diameter class presented Weibull distribution , and there was no regularity after 30 years old.Dispersed degree of diameter class of forest stand reached 1.52~1.19 at the age of 10~15 years and the 54 years was 1.03.
