| 陕北黄土高原油松人工林林分结构及个体生长 |
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| 引用本文： | 曹旭平,王梅,周建云,张文辉.陕北黄土高原油松人工林林分结构及个体生长[J].西北林学院学报,2011,26(2):155-159,231. |
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| 作者姓名： | 曹旭平 王梅 周建云 张文辉 |
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| 作者单位： | 1. 延安市黄龙山林业局,陕西,黄龙,715700
2. 西北农林科技大学西部环境与生态教育部重点实验室,陕西,杨陵,712100 |
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| 基金项目： | 中国科学院西部行动计划(KZCX2-XB2-05); 国家“十一五”科技支撑课题(2006BAD09B03) |
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| 摘 要： | 为了阐明陕北黄土高原不同县人工油松同龄纯林林分结构特点,为陕北黄土高原油松人工林经营管理提供依据。通过样地调查,对陕北黄土高原神木、绥德、吴起、延川、黄龙、宜川等8个县油松人工林的林分结构和林木个体生长及其影响因素进行了对比研究。结果表明,黄龙和宜川两县的直径和树高分布遵从于正态分布。由北向南,平均胸径、平均树高、平均冠幅和平均冠高逐渐增加;黄龙和宜川两地油松人工林林下有1~10年生的幼苗(树),数量丰富,生长正常;年均降水量和1月平均最低气温对油松人工林的生长影响显著,纬度和无霜期影响次之;黄龙和宜川两县人工油松林可以自我更新,个体生长发育正常,是人工栽培适宜地区;两县以北年均降水量小于550mm的地区,油松人工林天然更新不良,今后人工林培育需要谨慎选择生境。
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| 关 键 词： | 油松 人工林 林分结构 生长 |
Individual Growth and Stand Structure of Pinus tabulaeformis Plantation in Loess Plateau of Northern Shaanxi |
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| CAO Xu-ping,WANG Mei,ZHOU Jian-yun,ZHANG Wen-hui.Individual Growth and Stand Structure of Pinus tabulaeformis Plantation in Loess Plateau of Northern Shaanxi[J].Journal of Northwest Forestry University,2011,26(2):155-159,231. |
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| Authors: | CAO Xu-ping WANG Mei ZHOU Jian-yun ZHANG Wen-hui |
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| Institution: | CAO Xu-ping1,WANG Mei2,ZHOU Jian-yun2,ZHANG Wen-hui2*(1.Forest Bureau of Huanglongshan in Yan'an City,Huanglong,Shaanxi 715700,China,2.Key Laboratory of Environment and Ecology in Western China,Ministry of Education,Northwest A&F University,Yangling,Shaanxi 712100,China) |
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| Abstract: | The characteristics of stand structure of Pinus tabulaeformis plantations in different counties in Loess Plateau of Northern Shaanxi were probed to provide some scientific basis for reasonable management by field investigation.The distribution of diameter obeyed described normal distribution function in Huanglong and Yichuan.The distribution of height obeyed described normal distribution function in Wuqi,Yanchuan,Huanglong and Yichuan.Average DBH,height,crown width and crown height gradually increased from ... |
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| Keywords: | Pinus tabulaeformis plantation stand structure growth |
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