科尔沁沙地不同密度樟子松人工林年内径向生长及其影响因素

doi:10.13287/j.1001-9332.202509.006

应用生态学报 ›› 2025, Vol. 36 ›› Issue (9): 2719-2728.doi: 10.13287/j.1001-9332.202509.006

科尔沁沙地不同密度樟子松人工林年内径向生长及其影响因素

尚晓妍^1,2, 张晓^1,2, 温烁^1,2, 韩辉³, 张日升³, 包常亮⁴, 徐创军⁵, 时忠杰^1,2*

¹中国林业科学研究院生态保护与修复研究所, 北京 100093;
²中国林业科学研究院荒漠化研究所, 北京 100091;
³辽宁省沙地治理与利用研究所, 辽宁阜新 123000;
⁴内蒙古维纳河自然保护区管理局, 内蒙古鄂温克自治旗 021100;
⁵巴彦淖尔市农田建设服务中心, 内蒙古巴彦淖尔 015000

收稿日期:2025-05-15 接受日期:2025-07-16 出版日期:2025-09-18 发布日期:2026-04-18
通讯作者: *E-mail: shizj@caf.ac.cn
作者简介:尚晓妍,女,1999年生,硕士研究生。主要从事树轮生态学研究。E-mail:xyshang1027@163.com
基金资助:
国家重点研发计划政府间科技创新合作项目(2022YFE0127900)、中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2023ZA002)、国家自然科学基金项目(32071558)和内蒙古自治区自然科学基金项目(2023ZD23)

Intra-annual radial growth of Pinus sylvestris var. mongolica plantations with different stand densities and its influencing factors in Horqin Sandy Land, China

SHANG Xiaoyan^1,2, ZHANG Xiao^1,2, WEN Shuo^1,2, HAN Hui³, ZHANG Risheng³, BAO Changliang⁴, XU Chuangjun⁵, SHI Zhongjie^1,2*

¹Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing 100093, China;
²Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China;
³Institute of Sandy Land Management and Utilization of Liaoning, Fuxin 123000, Liaoning, China;
⁴Administration of Weina River Nature Reserve of Inner Mongolia, Ewenki Autonomous Banner 021100, Inner Mongolia, China;
⁵Bayannur Farmland Construction Service Center, Bayannur 015000, Inner Mongolia, China

Received:2025-05-15 Accepted:2025-07-16 Online:2025-09-18 Published:2026-04-18

摘要/Abstract

摘要： 以科尔沁沙地255、372、700、833、1667、3333和6667株·hm^-27种林分密度的樟子松人工林为对象,利用树木径向生长尺监测了2022和2023年生长季樟子松的年内径向生长动态,分析其径向生长的季节变化特征及影响因素。结果表明: 樟子松年径向生长量约(0.441±0.105) cm,主要生长期为5—7月,此时段生长量占全年总生长量的95.8%±2.7%,生长峰值多出现在5月下旬—6月上旬。林分密度每公顷增加1000株,樟子松年径向生长平均降低0.043 cm,生长结束时间平均提前3.5 d,生长日数平均缩短3.95 d。混合效应模型分析表明,樟子松的径向生长同时受林分密度、温度与生长物候的交互作用、胸径、竞争、降水、地下水位以及竞争与饱和水汽压差的交互作用的影响,其中,温度与生长物候的交互作用对樟子松径向生长的相对贡献率为56.2%。为实现人工林可持续经营,将林分密度控制在833株·hm^-2以下能显著提升林分生长和固碳能力。

关键词: 樟子松, 人工林, 径向生长, 林分密度, 环境因子

Abstract: Taking seven stands of Pinus sylvestris var. mongolica plantations with different stand densities (255, 372, 700, 833, 1667, 3333, and 6667 trees·hm^-2) in the Horqin Sandy Land as objects, we monitored intra-annual growth dynamics during the 2022 and 2023 growing seasons by using high-resolution radial dendrometers, and analyzed the seasonal variation and environmental drivers of radial growth. The results showed that the annual radial increment averaged 0.441±0.105 cm. The radial growth predominantly occurred from May to July, accounting for 95.8%±2.7% of total annual growth. Peak growth rates typically occurred between late May and early June. For an increase of 1000 trees·hm^-2 in stand density, annual radial growth declined by 0.043 cm, the cessation of growth occurred 3.50 days earlier, and the growing period shortened by 3.95 days on average. Linear mixed-effects modeling revealed that radial growth was influenced by stand density, the interaction between temperature and phenological stage, diameter at breast height (DBH), competition intensity, precipitation, groundwater level, and the interaction between competition and vapor pressure deficit (VPD). Notably, the interaction between temperature and phenology accounted for 56.2% of the relative contribution to radial growth. To achieve sustainable managemen, controlling stand density below 833 trees·hm^-2 would significantly enhance stand growth and carbon sequestration capacity.

Key words: Pinus sylvestris var. mongolica, plantation, radial growth, stand density, environmental factor

尚晓妍, 张晓, 温烁, 韩辉, 张日升, 包常亮, 徐创军, 时忠杰. 科尔沁沙地不同密度樟子松人工林年内径向生长及其影响因素[J]. 应用生态学报, 2025, 36(9): 2719-2728.

SHANG Xiaoyan, ZHANG Xiao, WEN Shuo, HAN Hui, ZHANG Risheng, BAO Changliang, XU Chuangjun, SHI Zhongjie. Intra-annual radial growth of Pinus sylvestris var. mongolica plantations with different stand densities and its influencing factors in Horqin Sandy Land, China[J]. Chinese Journal of Applied Ecology, 2025, 36(9): 2719-2728.

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科尔沁沙地不同密度樟子松人工林年内径向生长及其影响因素

Intra-annual radial growth of Pinus sylvestris var. mongolica plantations with different stand densities and its influencing factors in Horqin Sandy Land, China

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