[1]王泽龙,李泽义,陈邑烜,等. 西北地区红桦天然次生林立地质量评价[J].西北林学院学报,2024,39(1):59-66.[doi:10.3969/j.issn.1001-7461.2024.01.08]
 WANG Ze-long,LI Ze-yi,CHEN Yi-xuan,et al. Evaluating Site Quality of Natural Secondary Forest of Betula albosinensis in Northwestern China[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2024,39(1):59-66.[doi:10.3969/j.issn.1001-7461.2024.01.08]
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 西北地区红桦天然次生林立地质量评价()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第39卷
期数:
2024年第1期
页码:
59-66
栏目:
出版日期:
2024-01-31

文章信息/Info

Title:
 Evaluating Site Quality of Natural Secondary Forest of Betula albosinensis in Northwestern China
文章编号:
1001-7461(2024)01-0059-08
作者:
 王泽龙1李泽义1陈邑烜1马孟良1姜在民2蔡靖13*
 (1.西北农林科技大学 林学院,陕西 杨陵 712100;2.西北农林科技大学 生命科学学院,陕西 杨陵 712100;3.陕西秦岭森林生态系统国家野外科学观测研究站,陕西 宁陕 711600)
Author(s):
 WANG Ze-long1LI Ze-yi1CHEN Yi-xuan1MA Meng-liang1JIANG Zai-min2CAI Jing13*
 (1.College of Forestry,Northwest A&F University,Yangling 712100,Shaanxi,China; 2.College of Life Science,Northwest A&F University,Yangling 712100,Shaanxi,China; 3.Qinling Nat Forest Ecosystem Reseurch Stution,Ningshan 711600,Shaanxi,China)
关键词:
 红桦天然次生林立地质量评价立地指数立地形
Keywords:
Betula albosinensis natural secondary forest site quality evaluation site index site form
分类号:
S758
DOI:
10.3969/j.issn.1001-7461.2024.01.08
文献标志码:
A
摘要:
 在陕西、宁夏、甘肃、青海等地设置红桦天然次生林临时样地85块,以年龄-树高、胸径-树高数据为依据,选取常用的9个树木生长模型拟合导向曲线,采用相对优势高法编制立地指数表和立地形表,并采用2种方法对4个不同地区的立地质量进行比较,实现对西北地区红桦天然次生林立地质量的科学评价。结果表明,立地指数和立地形的最优导向曲线方程分别为H=18.073/{1+exp[-(A-22.571)/9.144]}、H=19.793/{1+exp[-(D-12.218)/6.588]};确定基准年龄为40 a,基准胸径为20 cm,指数级距为2 m,划定10~20 m共6个立地质量等级,编制立地指数表和立地形表。检验结果表明,两表的卡方值均小于临界值,落点检验精度分别为95%和97.5%,达到编表精度要求,均能够良好地反映红桦天然次生林立地质量。2种方法在对4个地区的立地质量评价中表现出较好的一致性,其中陕西火地塘林场立地质量最优,宁夏二龙河林场次之,青海北山林场和甘肃洮坪林场立地质量一般。
Abstract:
 A total of 85 temporary plots of natural secondary forest of Betula albosinensis were set up in Shaanxi,Ningxia,Gansu and Qinghai provinces.Using age-tree height and DBH data as analytical resources,9 tree growth models were selected to fit the guide curve,and the site index table and site form table were compiled by the method of relative advantage height.The site quality in four different regions was compared by the two methods to realize the scientific evaluation of site quality of natural secondary forest of B.albosinensis in northwestern China.The results showed that the optimal guiding curve equations of the site index and site form were H=18.073/{1+exp[-(A-22.571)/9.144]} and H=19.793/{1+exp[-(D-12.218)/6.588]},respectively,and the fitting correlation coefficients were above 0.95.The basal age was determined to be 40 a,the basal DBH to be 20 cm,the exponential distance to be 2 m,and a total of 6 site quality grades of 10-20 m were demarcated.The site index table and the site form table showed that the Chi-square values of the two tables were both less than the critical value,and the accuracies of the drop point test were 95% and 97.5%,respectively,which met the accuracy requirements of the table preparation.Both of the two methods could well reflect the site quality of the natural secondary forest of B.albosinensis.Moreover,the two methods showed a good consistency in the site quality evaluation of the four regions,among which the site quality of Shaanxi Huoditang Forest Farm was the best,followed by Ningxia Erlonghe Forest Farm.The site qualities of Qinghai Beishan Forest Farm and Gansu Taoping Forest Farm was in general level.

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备注/Memo

备注/Memo:
 收稿日期:2022-11-24修回日期:2023-02-26
基金项目:国家重点研发计划(2021YFD2200304-3、2017YFD0600603-02)。
第一作者:王泽龙。研究方向:森林生态。E-mail:wangzelong21@126.com
*通信作者:蔡靖,博士,教授,博士生导师。研究方向:森林生态、树木水分生理生态。E-mail:cjcaijing@163.com
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