毛竹及其变种叶片化学计量与养分重吸收效率

doi:10.12302/j.issn.1000-2006.201910034

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南京林业大学学报（自然科学版） ›› 2021, Vol. 45 ›› Issue (1): 79-85.doi: 10.12302/j.issn.1000-2006.201910034

毛竹及其变种叶片化学计量与养分重吸收效率

郭雯¹(), 漆良华¹^,²^,^*(), 雷刚¹^,²^,³, 胡璇¹, 张建¹, 舒琪¹, 商泽安¹

1.国际竹藤中心竹藤科学与技术重点实验室,北京 100102
2.国际竹藤中心安徽太平试验中心,安徽太平 245700
3.安徽太平竹林生态系统定位观测研究站,安徽太平 245700

收稿日期:2019-10-28 接受日期:2020-02-27 出版日期:2021-01-30 发布日期:2021-02-01
通讯作者: 漆良华
基金资助:
国际竹藤中心基本科研业务费重点专项(1632018012)

Leaf stoichiometry and nutrient reabsorption efficiency of Phyllostachys edulis and its varieties

GUO Wen¹(), QI Lianghua¹^,²^,^*(), LEI Gang¹^,²^,³, HU Xuan¹, ZHANG Jian¹, SHU Qi¹, SHANG Ze’an¹

1. Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, Beijing 100102, China
2. Anhui Taiping Experimental Station of ICBR, Taiping 245700, China
3. National Positioning and Monitoring Station for Bamboo Ecosystem in Taiping, Taiping 245700, China

Received:2019-10-28 Accepted:2020-02-27 Online:2021-01-30 Published:2021-02-01
Contact: QI Lianghua

摘要/Abstract

摘要：

【目的】评价毛竹(Phyllostachys edulis)及其变种叶片养分重吸收效率,旨在揭示主要养分元素的生态适应机制,以期为毛竹及其变种的可持续经营提供科学依据。【方法】以毛竹及其变种[黄槽毛竹(P. edulis cv. Luteosulcata)、花毛竹(P. edulis cv. Tao Kiang)、厚壁毛竹(P. edulis cv. Pachyloen)、金丝毛竹(P. edulis cv. Gracilis)]为研究对象,分析不同竹龄(1、3、5 a)叶片化学计量特征与养分重吸收效率。【结果】毛竹及其变种C、N 含量差异较小,P含量波动性较大。不同竹种相同竹龄立竹间成熟叶和凋落叶C、N、P含量差异性较大,1年生竹种叶片养分含量较高,随着竹龄增加,竹种适应能力逐渐下降。毛竹及其变种相同年龄立竹间、同一变种不同年龄立竹间叶片化学计量比存在一定差异性。1、3、5年生花毛竹叶片N、P重吸收效率较高,年龄对除厚壁毛竹外的其他毛竹及其变种叶片N重吸收效率影响呈现先升后降趋势,而不同年龄毛竹及其变种叶片P重吸收效率波动性较大。【结论】研究区毛竹及其变种生长受P元素的限制,毛竹及其变种随竹龄的增加适应能力有所变化,花毛竹适应性较强,厚壁毛竹则对土壤的依赖性较大。

关键词: 毛竹变种, C、N、P生态化学计量, 成熟叶, 凋落叶, 重吸收效率

Abstract:

【Objective】 The objective of this work was to evaluate the nutrient reabsorption efficiency of Phyllostachys edulis and its varieties, and to identify the ecological adaptation mechanism of the main nutrient elements. This will provide a scientific basis for the sustainable management of P. edulis and its varieties. 【Method】In this study, the leaf stoichiometric characteristics and nutrient reabsorption efficiency of P. edulis and its varieties (P. edulis cv. Luteosulcata, P. edulis cv. Tao Kiang, P. edulis cv. Pachyloen, and P. edulis cv. Gracilis) were analyzed at different ages (1, 3, 5 a). 【Result】 The content of carbon and nitrogen in the leaves of P. edulis and its varieties varied slightly, while the content of phosphorus fluctuated greatly. The contents of C, N and P in the leaves of different bamboo species at the same age were significantly different. The nutrient content in leaves of 1-year bamboo was relatively high. With an increase in age, the adaptability of bamboo gradually decreased. There were some differences in the leaf stoichiometric ratio between P. edulis and its varieties at the same age and between the same variety at different ages. The reabsorption efficiency of N and P in the leaves of P. edulis at different ages was higher. The effect of age on the N reabsorption efficiency of leaves of P. edulis and its varieties increased at first and then decreased, but the P reabsorption efficiency of bamboo leaves fluctuated greatly at different ages. 【Conclusion】 The growth of P. edulis and its varieties was limited by the P element, and the adaptability changed with an increase in age for P. edulis and its varieties. P. edulis cv. Tao Kiang showed strong adaptability, while P. edulis cv. Pachyloen had the opposite trait.

Key words: Phyllostachys edulis varieties, C/N/P ecological stoichiometry, mature leaf, withered leaf, reabsorption efficiency

中图分类号:

S718

郭雯,漆良华,雷刚,等. 毛竹及其变种叶片化学计量与养分重吸收效率[J]. 南京林业大学学报（自然科学版）, 2021, 45(1): 79-85.

GUO Wen, QI Lianghua, LEI Gang, HU Xuan, ZHANG Jian, SHU Qi, SHANG Ze’an. Leaf stoichiometry and nutrient reabsorption efficiency of Phyllostachys edulis and its varieties[J].Journal of Nanjing Forestry University (Natural Science Edition), 2021, 45(1): 79-85.DOI: 10.12302/j.issn.1000-2006.201910034.

图/表 4

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图2

表1

表2

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时期 period	化学计量比 stoichiometry	竹龄/a bamboo age		比值ratio
时期 period	化学计量比 stoichiometry	竹龄/a bamboo age		H		HC		M		HB	JS
成熟叶 mature leaf	C/N	1	14.59±0.25 Aa		15.04±0.21 Aa		15.09±0.83 Aa		13.10±0.46 Ab		15.11±0.17 Aa
		3	13.78±0.22 Ac		14.97±0.50 Ab		16.54±0.54 Aa		13.30±0.20 Ac		15.13±0.35 Ab
		5	12.81±0.35 Bc		14.36±0.26 Aab		15.16±0.23 Aa		13.64±0.31 Abc		15.42±0.59 Aa
	C/P	1	1 568.03±194.28 Aab		1 513.42±180.42 Bab		1 825.94±133.37 Bab		1 658.49±113.19 Bb		2 004.82±77.10 Aa
		3	1 760.53±247.60 Ab		2 533.31±282.65 Aa		2 288.22±58.80 Bab		2 025.33±64.43 Aab		2 054.33±119.50 Aab
		5	1 936.15±524.12 Ab		2 335.74±150.84 Aab		2 929.51±278.34 Aa		1 527.85±62.90 Bb		1 912.42±91.37Ab
	N/P	1	107.55±13.35 Aa		100.65±11.92 Ba		121.96±9.18 Ba		127.90±11.61 ABa		132.89±6.53 Aa
		3	126.93±15.99 Ab		169.76±19.63 Aa		139.19±7.19 Bab		152.61±6.21 Aab		135.78±7.28 Aab
		5	150.77±40.01 Aab		162.94±10.83 Aab		193.92±20.29 Aa		112.29±5.48 Bb		125.17±8.68 Ab
凋落叶 withered leaf	C/N	1	23.73±1.67 Aa		16.30±0.41 Bb		16.12±0.23 Bb		14.10±0.42 Bb		15.51±0.33 Ab
		3	23.76±1.51 Aa		17.88±0.67 Abc		20.05±0.72 Ab		15.29±0.37 Bc		20.28±0.77 Ab
		5	19.67±1.22 Aa		16.62±0.27 ABc		16.53±0.34 Bc		17.09±0.81 Abc		19.48±0.99 Aab
	C/P	1	5 407.14±1 250.29 Aa		2 273.74±315.61 Ab		1 928.78±63.55 Cb		1 852.57±74.65 Bb		1 988.96±76.91 Bb
		3	4 649.96±1 086.91 Aa		3 355.61±328.64 Aa		3 137.53±229.63 Aa		2 569.46±272.18 Aa		3 899.10±869.23 Aa
		5	2 644.93±348.29 Aa		3 101.29±541.62 Aa		2 639.02±140.79 Ba		2 197.04±160.72 ABa		3 206.84±212.85 ABa
	N/P	1	218.27±35.94 Aa		138.33±15.98 Ab		119.62±3.52 Bb		131.75±6.15 Bb		128.38±5.25 Ab
		3	190.60±33.76 Aa		186.09±11.65 Aa		156.13±8.65 Aa		167.14±14.71 Aa		188.05±35.36 Aa
		5	136.94±20.97 Aab		186.47±32.42 Aa		159.48±6.88 Aab		128.26±5.99 Bb		164.22±4.02 Aab

养分 nutrient	竹龄/a bamboo age		重吸收效率/% resorption efficiency
养分 nutrient	竹龄/a bamboo age		H		HC		M		HB	JS
N	1	40.84±4.74 Aa		8.40±3.19 Ab		4.93±4.99 Bb		7.54±2.67 Bb		-2.14±3.19 Bb
	3	46.69±3.94 Aa		16.16±4.08 Ac		22.63±4.96 Abc		14.56±3.58 ABc		30.65±2.80 Ab
	5	42.49±2.38 Aa		13.84±2.74 Abc		9.30±1.28 Bc		23.24±4.12 Ab		24.03±6.07 Ab
P	1	67.44±7.00 Aa		31.80±3.07 Ab		3.25±1.55 ABc		9.40±3.69 Ac		-5.62±3.44 Bc
	3	62.45±5.73 Aa		21.71±10.24 Ab		30.69±5.20 Ab		19.86±7.62 Ab		42.67±10.12 Aab
	5	33.05±7.67 Aa		13.84±4.42 Aab		-12.61±6.93 Bb		31.41±7.88 Aa		42.82±4.12 Aa

毛竹及其变种叶片化学计量与养分重吸收效率

Leaf stoichiometry and nutrient reabsorption efficiency of Phyllostachys edulis and its varieties

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