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[1]杨福春,郭炳桥,孙俊,等.武夷山不同海拔黄山松根系生物量季节变化特征[J].应用与环境生物学报,2017,23(06):1117-1121.[doi:10.3724/SP.J.1145.2016.12049]
 YANG Fuchun,,et al.Seasonal variation in the root biomass of Pinus hwangshanensis along an altitudinal gradient in Wuyi mountain[J].Chinese Journal of Applied & Environmental Biology,2017,23(06):1117-1121.[doi:10.3724/SP.J.1145.2016.12049]
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武夷山不同海拔黄山松根系生物量季节变化特征()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
23卷
期数:
2017年06期
页码:
1117-1121
栏目:
研究论文
出版日期:
2017-12-25

文章信息/Info

Title:
Seasonal variation in the root biomass of Pinus hwangshanensis along an altitudinal gradient in Wuyi mountain
作者:
杨福春 郭炳桥 孙俊 范瑞瑞 孙蒙柯 陈晓萍 郭英荣 袁荣斌 程林 钟全林 程栋梁
1福建师范大学地理科学学院 福州 350007 2福建省植物生理生态重点实验室 福州 350007 3湿润亚热带山地生态国家重点实验室培育基地 福州 350007 4江西武夷山国家级自然保护区管理局 上饶 334500
Author(s):
YANG Fuchun1 2 3 GUO Bingqiao1 2 3 SUN Jun1 2 3 FAN Ruirui1 2 3 SUN Mengke1 2 3 CHEN Xiaoping1 23 GUO Yingrong4 YUAN Rongbin4 CHENG Lin4 ZHONG Quanlin1 2 3 & CHENG Dongliang1 2 3**
1 Geography Institute of Fujian Normal University, Fuzhou 350007, China 2 Key Laboratory of Plant Physiology and Ecology of Fujian Province, Fuzhou 350007, China 3 State Key Laboratory Breeding Base of Humid Subtropical Mountain Ecology, Fuzhou 350007, China 4 District Management Bureau of Jiangxi Wuyishan National Nature Reserve, Shangrao 334500, China
关键词:
黄山松根系生物量海拔梯度季节变化
Keywords:
Pinus hwangshanensis root system biomass elevational gradient seasonal variation
分类号:
S718.5
DOI:
10.3724/SP.J.1145.2016.12049
摘要:
为揭示植物对环境的适应机制,以江西武夷山国家自然保护区的黄山松为研究对象,探讨该地5个海拔梯度(1 200、1 400、1 600、1 800、2 000 m)的黄山松根系生物量(根的直径d ≤ 5 mm)的季节变化特征. 结果显示:江西武夷山黄山松细根(d ≤ 2 mm)年度内的平均生物量为158.76 g/m2,中根(2 mm < d ≤ 5 mm)年度内的平均生物量为4.68 g/m2. 海拔对黄山松细根、中根的生物量均有显著的影响. 季节对黄山松细根生物量无显著影响,但对中根生物量具有显著影响,即在同一海拔中根生物量具有显著的季节差异,冬季中根生物量显著高于其他季节(P < 0.05). 上述表明细根与中根生物量不同的季节变化规律体现了不同类型根系在不同生长季具有不同的生长策略,而海拔间的变化则体现不同类型根系在不同生境下的环境适应,结果可为保障我国黄山松林业可持续发展提供理论依据. (图3 表2 参31)
Abstract:
Understanding the seasonal variation in root biomass (root diameter less than or equal to 5 mm) of Pinus hwangshanensis would provide a theoretical basis for the sustainable development of P. hwangshanensis forestry in China. In the natural habitat of P. hwangshanensis, five investigation sites along an elevational gradient from 1 000 m to 2 000 masl (meters above sea level) were established at 200 m intervals. The root biomass of P. hwangshanensis, along with the diameter at breast height (DBH) and plant height (H), were measured seasonally at each elevational site. We found that the average annual biomass of small roots (d ≤ 2 mm) and medium roots (2 mm < d ≤ 5 mm) was 158.76 g/m2 and 4.68 g/m2 respectively. The fine-root biomass and medium-root biomass of P. hwangshanensis changed significantly along the elevational gradient. The fine-root biomass of P. hwangshanensis did not change from season to season. At each site, however, the medium-root biomass varied significantly across seasons, with higher biomass observed in winter than in all other seasons (P < 0.05). In summary, the fine-root biomass and medium-root biomass of P. hwangshanensis varied significantly along the elevational gradient; the biomass of fine and medium roots showed divergent seasonal variations, suggesting that different seasonal growth mechanisms occurred between the two root types.

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更新日期/Last Update: 2017-12-25