不同密度下沙地樟子松碳、氮、磷化学计量及养分重吸收特征

doi:DOI: 10.13292/j.1000-4890.202102.016

生态学杂志 ›› 2021, Vol. 40 ›› Issue (2): 313-322.doi: DOI: 10.13292/j.1000-4890.202102.016

不同密度下沙地樟子松碳、氮、磷化学计量及养分重吸收特征

王凯^1*,那恩航¹,张日升²,高爽¹,刘建华²

（¹辽宁工程技术大学环境科学与工程学院，辽宁阜新 123000；²辽宁省沙地治理与利用研究所，辽宁阜新 123000）

出版日期:2021-02-10 发布日期:2021-07-09

Carbon, nitrogen and phosphorus stoichiometry and nutrient resorption of Pinus sylvestris var. mongolica under different densities.

WANG Kai^1*, NA En-hang¹, ZHANG Ri-sheng², GAO Shuang¹, LIU Jian-hua²#br#

(¹College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, China; ²Liaoning Institute of Sandy Land Control and Utilization, Fuxin 123000, Liaoning, China).

Online:2021-02-10 Published:2021-07-09

摘要/Abstract

摘要： 以樟子松纯林为对象，研究了6种密度（490、750、1110、1550、1930、2560株·hm^-2）下不同器官（当年生叶、一年生叶、当年生枝、一年生枝和细根）的C、N、P化学计量特征及叶片N、P重吸收效率。结果表明：随着林分密度增加，当年生和一年生叶C含量及当年生和一年生枝P含量呈降低趋势（1550株·hm^-2除外），当年生枝、一年生枝和细根C含量、各器官N含量及当年生叶、一年生叶和细根P含量呈先升高后降低趋势，在1550株·hm^-2密度下最高；当年生叶、一年生叶和细根C∶N、当年生叶和枝C∶P以及当年生叶、当年生和一年生枝N∶P呈先降低后升高趋势，一年生叶和枝C∶P呈升高趋势；凋落叶C含量先增加后降低，N含量呈升高趋势，P含量先降低后升高；叶片N重吸收效率下降，P重吸收效率先升高后降低，N重吸收效率:P重吸收效率呈下降趋势。因此，随樟子松林分密度增加，N限制减弱，P限制增强。当林分密度为1550株·hm^-2时，养分更多分配到叶片和细根，促进高生长，为樟子松人工林适宜经营密度。

关键词: 樟子松人工林, 器官差异, 密度调控, 养分分布格局, 科尔沁沙地

Abstract: We examined the carbon (C), nitrogen (N) and phosphorus (P) stoichiometry in different organs (current-year needle, one-year-old needle, current-year branch, one-year-old branch, and fine root) along with the N and P resorption efficiencies in needles of Pinus sylvestris var. mongolica in pure forest with six densities (490, 750, 1110, 1550, 1930 and 2560 trees·hm^-2). The results showed that C concentrations in the current-year and one-year-old needles and P concentrations in the current-year and one-year-old branches exhibited downward trends with increasing stand density, except for the 1550 trees·hm^-2 stand. With the increases of stand density, C concentrations in current-year branch, one-year-old branch and fine root, the N concentrations in all organs, and P concentrations in current-year needle, one-year-old needle and fine root tended to increase and then decrease, with the highest values in the 1550 trees·hm^-2 stand. The C∶N in current-year needle, one-year-old needle and fine root, C∶P in current-year needle and branch, and N∶P in current-year needle, current-year and one-year-old branches displayed decreasing and then increasing trends with increasing stand density, whereas C∶P in one-year-old needle and branch showed an upward trend. With increasing stand density, C concentrations in leaf litter increased and then decreased, N concentrations exhibited an increasing trend, and P concentrations decreased and then increased. With increasing stand density, N resorption efficiency and the ratio of N resorption efficiency to P resorption efficiency decreased, and P resorption efficiency increased and then decreased. These findings indicated that N limitation weakened but P limitation enhanced with increasing stand density. The optimal management density for P. sylvestris var. mongolica stand should be 1550 trees·hm^-2, in which more nutrients are allocated to needles and fine roots and thus contribute to high growth rate.

Key words: Pinus sylvestris var.mongolica plantation, organ difference, density control, nutrient distribution pattern, Horqin sandy land.

王凯, 那恩航, 张日升, 高爽, 刘建华. 不同密度下沙地樟子松碳、氮、磷化学计量及养分重吸收特征[J]. 生态学杂志, 2021, 40(2): 313-322.

WANG Kai, NA En-hang, ZHANG Ri-sheng, GAO Shuang, LIU Jian-hua. Carbon, nitrogen and phosphorus stoichiometry and nutrient resorption of Pinus sylvestris var. mongolica under different densities.[J]. Chinese Journal of Ecology, 2021, 40(2): 313-322.

[1]	倪添, 谢龙飞, 董利虎. 黑龙江省樟子松人工林含碳量估算方法的比较 [J]. 生态学杂志, 2023, 42(7): 1774-1782.
[2]	王凯, 齐悦彤, 那恩航, 陶江, 刘建华, 康宏樟. 基于器官凋落叶-土壤生态化学计量特征的樟子松和赤松人工林养分利用策略 [J]. 生态学杂志, 2023, 42(2): 274-281.
[3]	王凯, 齐悦彤, 刘建华, 焦向丽, 刘焕彬. 油松与榆树人工林植物-凋落叶-土壤碳、氮、磷化学计量特征 [J]. 生态学杂志, 2022, 41(3): 427-434.
[4]	王凯, 逄迎迎, 吕林有, 张大鹏, 焦向丽. 杨树幼苗自然干旱过程中非结构性碳水化合物变化 [J]. 生态学杂志, 2021, 40(7): 1969-1978.
[5]	王凯, 高爽, 刘焕彬, 吕林有, 焦向丽. 施氮与增水对杨树幼苗不同器官碳氮磷化学计量的影响 [J]. 生态学杂志, 2021, 40(12): 3870-3880.
[6]	韩潇潇，林力涛，于占源，刚群，黄月，林贵刚，曾德慧. N、P停止施入后植物叶片主要元素含量及化学计量特征的响应 [J]. 生态学杂志, 2020, 39(7): 2167-2174.
[7]	王凯,沈潮,宋立宁,吕林有,张大鹏. 持续干旱下沙地樟子松幼苗C、N、P化学计量变化规律 [J]. 生态学杂志, 2020, 39(7): 2175-2184.
[8]	吕家欣,李秀芬,郑晓,聂哲,刘思嫱. 近40年科尔沁沙地植被时空变化及其驱动力 [J]. 生态学杂志, 2020, 39(5): 1399-1408.
[9]	王凯,赵成姣,张日升,那恩航,刘建华,王东丽. 不同密度樟子松人工林土壤碳氮磷化学计量特征 [J]. 生态学杂志, 2020, 39(3): 741-748.
[10]	武金洲, 郑晓, 高添, 宋立宁, 张婷. 三北防护林体系建设工程对科尔沁沙地社会经济影响的定量分析 [J]. 生态学杂志, 2020, 39(11): 3567-3575.
[11]	石亮, 王凯, 张日升, 尤国春, 孙继军, 孙海红, 刘建华, 姚宏佳. 樟子松人工林间伐宽度对土壤养分的影响 [J]. 生态学杂志, 2020, 39(10): 3203-3210.
[12]	贾天宇, 刘廷玺, 段利民, 张亦然, 童新, 包永志. 半干旱沙丘草甸过渡带人工杨树蒸腾耗水规律 [J]. 生态学杂志, 2020, 39(10): 3255-3264.
[13]	付青云,刘廷玺,段利民,王冠丽,曹文梅,黄天宇. 基于稳定性氧同位素分析不同树龄小叶锦鸡儿用水策略 [J]. 生态学杂志, 2019, 38(5): 1570-1579.
[14]	刘思洋,李雪华,骆永明,徐锰瑶,马晓彤. 围封和放牧草地植物多样性对氮添加的响应差异 [J]. 生态学杂志, 2019, 38(12): 3635-3641.
[15]	李炎真,谢尧,张晶玲,赵琼,曾德慧. 氮添加及林下植被去除对沙地樟子松人工林土壤呼吸组分的影响 [J]. 生态学杂志, 2019, 38(10): 2997-3006.

不同密度下沙地樟子松碳、氮、磷化学计量及养分重吸收特征

Carbon, nitrogen and phosphorus stoichiometry and nutrient resorption of Pinus sylvestris var. mongolica under different densities.

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价