Effects of nitrogen and phosphorus fertilization on biomass allocation and root morphology in Betula alnoides clones

doi:10.3969/j.issn.1000-2006.201809018

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2019, Vol. 43 ›› Issue (5): 23-29.doi: 10.3969/j.issn.1000-2006.201809018

Previous Articles Next Articles

Effects of nitrogen and phosphorus fertilization on biomass allocation and root morphology in Betula alnoides clones

LIU Shiling¹(), CHEN Lin¹, YANG Baoguo¹, JIA Hongyan¹^,^*(), PANG Shengjiang¹, ZHANG Pei¹, WANG Hui²

1. Experimental Center of Tropical Forestry, Chinese Academy of Forestry, Guangxi Youyiguan Forest Ecosystem Research Station, Pingxiang 532600, China
2. Key Laboratory of Forest Ecology and Environment,State Forestry and Grassland Administration, Institute of Forest Ecology, Environment and Protection,Chinese Academy of Forestry, Beijing 100091, China

Received:2018-09-18 Revised:2019-04-16 Online:2019-10-08 Published:2019-10-08
Contact: JIA Hongyan E-mail:liushiling725@163.com;rlzxjhy@126.com

Abstract

Abstract:

【Objective】 Betula alnoides is a native, fast-growing, broad-leaved tree species found in the tropical and subtropical regions of China, and it has a high economic value and ecological benefits. The availability and spatial distribution of nitrogen (N) and phosphorus (P) significantly affect plant growth and root development. By studying the effect of fertilization on biomass allocation and root morphology in B. alnoides clones, the optimum B. alnoides clone and fertilization treatments were screened to provide scientific guidance for cultivating B. alnoides. 【Method】 Four B. alnoides clones (A5, FB4, FB4⁺ and BY-1) were selected as research materials, and a completely randomized experimental design was conducted with nine treatments including three N levels (0, 200 and 400 mg/seedling) and three P levels (0, 70 and 140 mg/seedling) with three replications and 25 plants for each subplot. To prevent nutrient deficiency in seedlings, 332 mg/seedling potassium (K) was applied. P fertilizer was supplied to the medium as a basal fertilizer. The application of N and K fertilizers was initiated at 1 month after seedling transplantation and was conducted at intervals of 7 days for a total of 10 times. When the seedlings were harvested, the roots were separated and scanned to measure morphological indexes (root length, surface area, volume and mean diameter). Finally, whole plants were dried to determine the biomass of each part, and the biomass allocation and root morphology of B. alonoides clones under different fertilization treatments were compared. 【Result】 ① The above-ground, below-ground and total biomass were significantly affected by fertilization treatment and differed according to clones, but they were not influenced by the interaction between clones and fertilization treatment. Compared with the control treatment, the fertilization treatment significantly increased the above-ground, below-ground, and total biomass. Regardless of the clone, treatment 5 (200 mg/seedling N+70 mg/seedling P) resulted in the highest biomass among all treatments, which was 11.27%-460.49%, 7.14%-200.00% and 10.57%-390.09% higher than the other treatments for above ground, below ground, and total biomass, respectively. On further comparing different clones, FB4⁺ showed obvious growth advantages, with an above ground, below ground, and total biomass of 1.14-1.21, 1.22-1.31 and 1.15-1.22 times than those of other clones (A5,FB4 and BY-1), respectively. ② The root surface area, mean diameter and total length were significantly different among different clones and fertilization treatments. Except the total length of roots with a diameter of <2 mm, the interaction effect between clones and fertilization treatment resulted in significant differences in terms of root volume, surface area, mean diameter and total length. The fertilization treatment improved root morphology compared with the control treatment. In all clones, treatment 5 resulted in superior root morphological indexes than the other treatments, with values 0.77%-227.20%, 2.13%-152.63%, 0.60%-264.13% and 4.53%-214.04% higher than those of root surface area, mean diameter, volume and total length, respectively. On further comparing the total lengths of fine roots of different diameters, treatment 5 also produced the longest thin fine roots (0 < diameter ≤ 1 mm), thick fine roots (1 < diameter ≤ 2 mm), and coarse roots (diameter>2 mm) in B. alnoides seedlings. The clone FB4⁺ under treatment 5 exhibited the optimum root morphology among all combinations of clones and fertilization treatment. ③ There were significant positive correlations among the above ground, below ground and total biomass. Further, these three measures of biomass were positively correlated with root mean diameter, total length, surface area and volume. 【Conclusion】 Fertilization significantly increased biomass and promoted root growth ofB. alnoides seedlings, although there were differences among clones. Based on biomass and root morphological indexes, clone FB4⁺ and treatment 5 (200 mg/seedling N+70 mg/seedling P) exhibited the optimum growth performance for this tree species.

Key words: Betula alnoides, clone, nitrogen, phosphorus, fertilization, biomass allocation, root morphology

CLC Number:

S723.7

LIU Shiling, CHEN Lin, YANG Baoguo, JIA Hongyan, PANG Shengjiang, ZHANG Pei, WANG Hui. Effects of nitrogen and phosphorus fertilization on biomass allocation and root morphology in Betula alnoides clones[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2019, 43(5): 23-29.

Figures/Tables 3

Table 1

Table 2

Table 3

Root parameter of four Betula alnoides clones in different fertilization treatments "

项目 item	处理号 treatment No.	根表面积/cm² root surface area	根体积/cm³ root volume	根平均直径/mm root mean diameter	根长/cm root length
项目 item	处理号 treatment No.	根表面积/cm² root surface area	根体积/cm³ root volume	根平均直径/mm root mean diameter	小细根 (0<d≤1 mm) thin fine root	粗细根 (0<d≤2 mm) thick fine root	粗根 (d>2 mm) coarse root
施肥处理 fertilization treatment	1(CK)	46.51±9.59 e	0.92±0.12 e	0.57±0.12 c	278.80±72.95 f	17.33±6.42 d	3.16±1.90 e
	2	64.01±14.98 d	1.16±0.30 de	0.67±0.13 c	353.75±107.34 e	21.71±10.91 d	4.89±3.66 d
	3	64.46±8.92 d	1.27±0.33 d	0.71±0.23 c	410.58±82.04 e	26.36±11.05 d	5.81±3.56 d
	4	115.65±6.43 c	2.44±0.23 c	1.33±0.23 ab	638.81±230.79 d	57.98±29.39 c	7.88±4.54 cd
	5	152.18±14.16 a	3.35±0.06 a	1.44±0.04 a	844.48±153.57 a	82.72±21.71 a	12.70±6.00 a
	6	133.53±15.41 b	3.00±0.21 ab	1.38±0.15 ab	756.18±117.32 bc	71.01±37.81 b	7.96±6.26 cd
	7	120.02±7.07 bc	2.62±0.20 bc	1.15±0.20 b	611.63±176.05 de	54.32±31.68 c	6.62±3.16 cd
	8	151.02±13.12 a	3.33±0.33 a	1.41±0.19 ab	812.28±122.02 ab	75.17±25.29 b	11.74±6.85 ab
	9	135.46±5.69 ab	2.92±0.54 ab	1.38±0.11 ab	732.20±161.85 cd	73.14±30.88 b	9.16±4.51 bc
无性系 clone	A5	101.36±43.95 b	2.33±1.18 a	1.03±0.5 c	516.69±189.40 c	45.33±41.56 b	5.38±5.79 c
	FB4	117.16±39.79 a	2.31±0.94 a	1.26±0.45 ab	668.85±216.66 a	52.97±30.44 ab	8.45±3.94 ab
	FB4⁺	124.51±58.65 a	2.54±1.56 a	1.35±0.66 a	707.27±262.37 a	62.45±62.28 a	9.57±6.02 a
	BY-1	115.95±49.98 a	2.66±1.19 a	1.08±0.55 bc	623.72±262.57 b	57.55±30.45 ab	6.14±5.33 b
变异来源 source of variance	施肥处理fertilization treatment	83.71^**	27.54^**	106.76^**	71.8^**	29.69^**	5.34^**
	无性系clone	9.51^**	1.79	32.97^**	31.85^**	2.98^*	3.02^*
	施肥处理×无性系 fertilization treatment × clone	7.50^**	3.43^**	6.44^**	4.11^**	7.61^**	0.92

Table 3

References 30

[1]	HODGE A. The plastic plant: root responses to heterogeneous supplies of nutrients[J]. New Phytologist, 2004, 162(1):9-24.DOI: 10.1111/j.1469-8137.2004.01015.x. doi: 10.1111/nph.2004.162.issue-1
[2]	VANCE C P, UHDE-STONE C, ALLAN D L. Phosphorus acquisition and use: critical adaptations by plants for securing a nonrenewable resource[J]. New Phytologist, 2003, 157(3):423-447. DOI: 10.1046/j.1469-8137.2003.00695.x. doi: 10.1046/j.1469-8137.2003.00695.x
[3]	VITOUSEK P. Nutrient cycling and nutrient use efficiency[J]. The American Naturalist, 1982, 119(4):553-572. DOI: 10.1086/283931. doi: 10.1086/283931
[4]	邝雷, 邓小梅, 余斐, 等. 氮、磷、钾配比施肥对任豆容器苗生长的影响[J]. 华南农业大学学报, 2014, 35(6):79-82,88.DOI: 10.7671/j.issn.1001-411X.2014.06.015.
	KUANG L, DENG X M, YU F, et al. Effects of fertilization on the growth of Zenia insignis container seedlings [J]. Journal of South China Agricultural University, 2014, 35(6):79-82.
[5]	徐福利, 赵亚芳, 张潘, 等. 施肥对华北落叶松人工林根茎叶中氮磷含量的影响[J]. 林业科学, 2014, 50(3):139-143.DOI: 10.11707/j.1001-7488.20140320.
	XU F L, ZHAO Y F, ZHANG P, et al. Effects of fertilization on nitrogen and phosphorus content in roots,stems and leaves of Larix principis-rupprechtii plantation [J]. Scientia Silvae Sinicae, 2014, 50(3):139-143.
[6]	周玮, 周运超. 施肥对马尾松幼苗及根系生长的影响[J]. 南京林业大学学报(自然科学版), 2011, 35(3):13-17.DOI: 10.3969/j.issn.1000-2006.2011.03.014.
	ZHOU W, ZHOU Y C. Effect on the growth of Pinus massoniana seedlings and root under different fertilizer treatments [J]. Journal of Nanjing Forestry University(Natural Sciences Edition), 2011, 35(3):13-17.
[7]	王力朋, 晏紫伊, 李吉跃, 等. 指数施肥对楸树无性系生物量分配和根系形态的影响[J]. 生态学报, 2012, 32(23):7452-7462.DOI: 10.5846/stxb201203040288.
	WANG L P, YAN Z Y, LI J Y, et al. Effects of exponential fertilization on biomass allocation and root morphology of Catalpa bungei clones [J]. Acta Ecologica Sinica, 2012, 32(23):7452-7462.
[8]	韦如萍, 胡德活, 陈金慧, 等. 低磷胁迫下杉木无性系根系形态及养分利用响应研究[J]. 南京林业大学学报(自然科学版), 2018, 42(2):1-8.DOI: 10.3969/j.issn.1000-2006.201704027.
	WEI R P, HU D H, CHEN J H, et al. Response of roots morphological characteristics and nutrient utilization to low phosphorus stress among five clones of Cunninghamia lanceolate(Lamb.)Hook [J]. Journal of Nanjing Forestry University(Natural Sciences Edition), 2018, 42(2):1-8.
[9]	宋平, 张蕊, 张一, 等. 模拟氮沉降对低磷胁迫下马尾松无性系细根形态和氮磷效率的影响[J]. 植物生态学报, 2016, 40(11):1136-1144.DOI: 10.17521/cjpe.2016.0109. doi: 10.17521/cjpe.2016.0109
	SONG P, ZHANG R, ZHANG Y, et al. Effects of simulated nitrogen deposition on fine root morphology,nitrogen and phosphorus efficiency of Pinus massoniana clone under phosphorus deficiency [J]. Chinese Journal of Plant Ecology, 2016, 40(11):1136-1144.
[10]	蒋云东, 王达明, 邱琼, 等. 7种热带阔叶树种的苗木施肥试验[J]. 云南林业科技, 2003(2):11-16.DOI: 10.16473/j.cnki.xblykx1972.2003.02.004.
	JIANG Y D, WANG D M, QIU Q, et al. Fertilization experiment on young plants of seven broad-leaved tree species indigenous to tropical areas[J]. Yunnan Forestry Science and Technology, 2003(2):11-16.
[11]	郑海水, 杨斌, 傅强, 等. 不同施肥措施对西南桦幼林生长的影响[J]. 西部林业科学, 2007, 36(3):1-6. DOI: 10.16473/j.cnki.xblykx1972.2007.03.004.
	ZHENG H S, YANG B, FU Q, et al. Effect of different fertilization treatments on sapling growth of Betula alnoides [J]. Journal of West China Forestry Science, 2007, 36(3):1-6.
[12]	陈琳, 曾杰, 徐大平, 等. 氮素营养对西南桦幼苗生长及叶片养分状况的影响[J]. 林业科学, 2010, 46(5):35-40.DOI: 10.11707/j.1001-7488.20100506.
	CHEN L, ZENG J, XU D P, et al. Effects of exponential nitrogen loading on growth and foliar nutrient status of Betula alnoides seedlings [J]. Scientia Silvae Sinicae, 2010, 46(5):35-40.
[13]	CHEN L, JIA H Y, ZENG J, et al. Growth and nutrient efficiency of Betula alnoides clones in response to phosphorus supply[J]. Annals of Forest Research, 2016, 59(2):199-207.DOI: 10.15287/afr.2016.561.
[14]	李化山, 汪金松, 法蕾, 等. 模拟氮沉降对油松幼苗生长的影响[J]. 应用与环境生物学报, 2013, 19(5):774-780.DOI: 10.3724/SP.J.1145.2013.00774.
	LI H S, WANG J S, FA L, et al. Effects of simulated nitrogen deposition on seedling growth of Pinus tabulaeformis [J]. Chinese Journal of Applied and Environmental Biology, 2013, 19(5):774-780.
[15]	REICH P B, OLEKSYN J. Global patterns of plant leaf N and P in relation to temperature and latitude[J]. Proceedings of the National Academy of Sciences of the United States of America, 2004, 101(30):11001-11006.DOI: 10.1073/pnas.0403588101.
[16]	CHEN L, JIA H Y, DELL B, et al. Responses of Castanopsis hystrix seedlings to macronutrient imbalances: growth,photosynthetic pigments and foliar nutrient interactions[J]. Journal of Plant Nutrition, 2016, 39(12):1663-1671.DOI: 10.1080/01904167.2016.1161784. doi: 10.1080/01904167.2016.1161784
[17]	LI J Y, GUO Q X, ZHANG J X, et al. Effects of nitrogen and phosphorus supply on growth and physiological traits of two Larix species[J]. Environmental and Experimental Botany, 2016, 130:206-215.DOI: 10.1016/j.envexpbot.2016.06.006. doi: 10.1016/j.envexpbot.2016.06.006
[18]	STUDER C, HU Y C, SCHMIDHALTER U. Interactive Effects of N-, P-and K-nutrition and drought stress on the development of maize seedlings[J]. Agriculture, 2017, 7(11):90-102.DOI: 10.3390/agriculture7110090. doi: 10.3390/agriculture7110090
[19]	王益明, 李瑞瑞, 张慧, 等. 指数施肥对美国山核桃幼苗生物量及氮积累的影响[J]. 生态学杂志, 2018, 37(10):2920-2926.DOI: 10.13292/j.1000-4890.201810.028.
	WANG Y M, LI R R, ZHANG H, et al. Effects of exponential fertilization on biomass and nitrogen accumulation of Carya illinoensis seedlings [J]. Chinese Journal of Ecology, 2018, 37(10):2920-2926.
[20]	WANG J R, HAWKINS C D B, LETCHFORD T. Relative growth rate and biomass allocation of paper birch (Betula papyrifera) populations under different soil moisture and nutrient regimes[J]. Canadian Journal of Forest Research, 1998, 28(1):44-55.DOI: 10.1139/cjfr-28-1-44. doi: 10.1139/x97-191
[21]	DENG S X, SHI K K, MA J, et al. Effects of fertilization ratios and frequencies on the growth and nutrient uptake of Magnolia wufengensis (Magnoliaceae)[J]. Forests, 2019, 10(1):65-94.DOI: 10.3390/f10010065. doi: 10.3390/f10010065
[22]	TRESEDER K K, VITOUSEK P M. Effects of soil nutrient availability on investment in acquisition of N and P in hawaiian rain forests[J]. Ecology, 2001, 82(4):946-954.DOI: 10.2307/2679894. doi: 10.1890/0012-9658(2001)082[0946:EOSNAO]2.0.CO;2
[23]	GÜSEWELL S. Responses of wetland graminoids to the relative supply of nitrogen and phosphorus[J]. Plant Ecology, 2005, 176(1):35-55.DOI: 10.1007/s11258-004-0010-8. doi: 10.1007/s11258-004-0010-8
[24]	白晶晶, 吴俊文, 何茜, 等. 不同配方施肥对楸树幼苗生物量分配及养分利用的影响[J]. 华南农业大学学报, 2015, 36(6):91-97.DOI: 10.7671/j.issn.1001-411X.2015.06.015.
	BAI J J, WU J W, HE Q, et al. Effects of different fertilization formulas on Catalpa bungei seedling biomass allocation and nutrient use efficiency [J]. Journal of South China Agricultural University, 2015, 36(6):91-97.
[25]	MANTER D K, KAVANAGH K L, ROSE C L. Growth response of Douglas-fir seedlings to nitrogen fertilization:importance of Rubisco activation state and respiration rates[J]. Tree Physiology, 2005, 25(8):1015-1021.DOI: 10.1093/treephys/25.8.1015. doi: 10.1093/treephys/25.8.1015
[26]	PREGITZER K S, DEFOREST J L, BURTON A J, et al. Fine root architecture of nine north american trees[J]. Ecological Monographs, 2002, 72(2):293-309.DOI: 10.2307/3100029. doi: 10.1890/0012-9615(2002)072[0293:FRAONN]2.0.CO;2
[27]	EINSMANN J C, JONES R H, PU M, et al. Nutrient foraging traits in 10 co-occurring plant species of contrasting life forms[J]. Journal of Ecology, 1999, 87(4):609-619.DOI: 10.1046/j.1365-2745.1999.00376.x. doi: 10.1046/j.1365-2745.1999.00376.x
[28]	CAO P, REN Y Z, ZHANG K P, et al. Further genetic analysis of a major quantitative trait locus controlling root length and related traits in common wheat[J]. Molecular Breeding, 2014, 33(4):975-985. DOI: 10.1007/s11032-013-0013-z. doi: 10.1007/s11032-013-0013-z
[29]	刘莹, 王国梁, 刘国彬, 等. 不同分类系统下油松幼苗根系特征的差异与联系[J]. 植物生态学报, 2010, 34(12):1386-1393.DOI: 10.3773/j.issn.1005-264x.2010.12.004.
	LIU Y, WANG G L, LIU G B, et al. Difference and inherent linkage of root characteristics in different root classification of Pinus tabulaeformis seedlings [J]. Chinese Journal of Plant Ecology, 2010, 34(12):1386-1393.
[30]	TATENO R, HISHI T, TAKEDA H. Above-and belowground biomass and net primary production in a cool-temperate deciduous forest in relation to topographical changes in soil nitrogen[J]. Forest Ecology Management, 2004, 193(3):297-306.DOI: 10.1016/j.foreco.2003.11.011. doi: 10.1016/j.foreco.2003.11.011

Metrics

Comments

www.nldxb.njfu.edu.cn

Edited ＆ Published by Editorial Department of Nanjing Forestry University(Natural Sciences Edition)
Address： No.159 Longpan Road,Nanjing 210037 Jiangsu,P.R.China
E-mail ：xuebao@njfu.edu.cn , xuebao@njfu.com.cn
Telephone +86-25-85428247,85427076
Distributed by China International Book Trading Corporation P.O. Box 399, Beijing ,P.R. China

项目 item	处理号 treatment No.	地下生物量/g below-ground biomass	地上生物量/g above-ground biomass	总生物量/g total biomass	根冠比 ratio of root to shoot
施肥处理 fertilization treatment	1(CK)	0.30±0.09 c	0.81±0.18 c	1.11±0.25 c	0.31±0.07 b
	2	0.36±0.10 c	0.98±0.23 c	1.34±0.32 c	0.38±0.07 a
	3	0.36±0.10 c	1.17±0.34 c	1.53±0.43 c	0.38±0.03 a
	4	0.77±0.17 ab	3.50±0.68 b	4.26±0.83 b	0.22±0.02 c
	5	0.90±0.19 a	4.54±0.82 a	5.44±0.96 a	0.20±0.03 c
	6	0.81±0.29 ab	3.92±1.10 b	4.72±1.37 b	0.21±0.02 c
	7	0.73±0.13 b	3.60±0.52 b	4.33±0.61 b	0.20±0.03 c
	8	0.84±0.15 ab	4.08±0.78 ab	4.92±0.91 ab	0.21±0.02 c
	9	0.73±0.14 b	3.67±0.97 b	4.33±0.91 b	0.20±0.02 c
无性系 clone	A5	0.59±0.25 b	2.71±1.53 b	3.30±1.78 b	0.25±0.08 a
	FB4	0.59±0.17 b	2.81±1.33 b	3.40±1.49 b	0.24±0.09 a
	FB4⁺	0.77±0.37 a	3.28±1.88 a	4.02±2.20 a	0.26±0.06 a
	BY-1	0.63±0.21 b	2.87±1.46 b	3.49±1.66 b	0.26±0.10 a
变异来源 source of variance	施肥处理fertilization treatment	34.94^**	54.23^**	57.01^**	40.86^**
	无性系clone	11.38^**	3.48^*	4.60^**	1.67
	施肥处理×无性系 fertilization treatment × clone	1.43	0.66	0.77	0.81

Effects of nitrogen and phosphorus fertilization on biomass allocation and root morphology in Betula alnoides clones

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 3

References 30

Related Articles 15

Recommended Articles

Metrics

Comments

Author

Reader

Reviewer

处理编号 treatment No.	施肥组合 combination	施肥量/(mg·株^-1) fertilization amount
处理编号 treatment No.	施肥组合 combination	N	P	K
1(CK)	N₁P₁	0	0	332
2	N₁P₂	0	70	332
3	N₁P₃	0	140	332
4	N₂P₁	200	0	332
5	N₂P₂	200	70	332
6	N₂P₃	200	140	332
7	N₃P₁	400	0	332
8	N₃P₂	400	70	332
9	N₃P₃	400	140	332

[1]	FENG Wei, SHAN Changdan, ZHANG Hui, LIU Jiaman, LIU Guoang, YAO Zengyu. Effects of fertilization regime and rate on growth and needle nutrient level of Pinus armandii seedling [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(3): 191-198.
[2]	XIAO Hui, LIN Zezhong, SU Shunde, JIANG Xiaoli, CHEN Haiqiang, WU Wei, LUO Shuijin, PAN Longying, ZHENG Renhua. Genetic variation analysis and selection of clones based on short-term nursery testing on Cunninghamia lanceolata [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(3): 63-70.
[3]	DING Yong, LIU Xin, ZHANG Jinchi, WANG Yuhao, CHEN Meiling, LI Tao, LIU Xiaowu, ZHOU Yuexiang, SUN Lianhao, LIAO Yi. Effects of acid rain-based transformation on Cunninghamia lanceolata fine root growth and soil nutrient content [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(3): 90-98.
[4]	LI Chengji, GUAN Fengying, ZHOU Xiao, ZHANG Xuan, ZHENG Yaxiong. Effects of fertilization application on quantity and quality recovery of restoring strip-harvested moso (Phyllostachys edulis) bamboo forests [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(2): 79-85.
[5]	SUN Jinwei, WANG Shengyan, FAN Diwu, ZHU Yongli. Effects of C, N and P additions on soil respiration in woodland under Cd stress [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(1): 140-146.
[6]	ZUO Zhuang, ZHANG Yun, CUI Xiaoyang. Early effects of fire on soil nitrogen content and form in Larix gmelinii forests [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(1): 147-154.
[7]	LU Qifan, LIN Shangping, LIU Shenghui, ZHENG Xiang, BI Yufang, XIAO Zizhang, JIANG Jiang, WANG Anke, DU Xuhua. Meta-analysis of the effect of fertilization on the yield of Phyllostachys edulis forest [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(1): 88-96.
[8]	OU Yang, OUYANG Fangqun, SUN Meng, WANG Chao, WANG Junhui, AN Sanping, WANG Lifang, XU Na, WANG Meng. Young growth rhythm, annual and density interaction effects and selection strategies of Picea abies clones [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2023, 47(6): 95-104.
[9]	YANG Jiading, LIU Yujie, FENG Jianyuan, ZHANG Yuanlan. Nitrogen resorption machanism during leaf senescence in woody plants [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2023, 47(5): 1-8.
[10]	LIANG Wenchao, BU Xing, LUO Siqian, XIE Yinfeng, HU Jialing, ZHANG Wangxiang. Effects of fertilization on the leaf growth and photosynthetic characteristics of Chaenomeles speciosa ‘Changshouguan’ after processing of warming in the post floral stage [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2023, 47(5): 114-120.
[11]	DENG Jiazhen, YE Shaoming, LIN Mingye, LAN Yahui, YAN Yu, FAN Rongyuan, PAN Cailing. Morphological and ultrastructural characteristics of root nodules and rhizobium of Dalbergia odorifera [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2023, 47(5): 259-267.
[12]	GUO Wei, HAN Xiu, ZHANG Li, WANG Ying, DU Hui, YAN Yu, SUN Zhongkui, ZHANG Lin, LI Guohua, LUO Lei. Morphological, photosynthetic physiological and transcriptome analyses of Pteroceltis tatarinowii in response to different nitrogen application levels [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2023, 47(5): 87-96.
[13]	YUAN Ying, WANG Xuefeng, WANG Tian, CHEN Feifei, HUANG Chuanteng, LIN Ling, DONG Xiaona. Estimation of total nitrogen in young Aquilaria sinensis based on multi image features [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2023, 47(3): 19-28.
[14]	ZHAO Mingzhen, LIU Jing, ZOU Xianhua, ZHENG Hong, FAN Fujing, LIN Kaimin, MA Xiangqing, LI Ming. Effects of thinning and fertilization on the growth and timber assortment structure of middle-aged Chinese fir forest [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2023, 47(2): 70-78.
[15]	YE Keke, LI Qingmei, ZHU Yan, YAN Jingjing, ZHANG Zihan, FENG Sai, YANG Xiaohui. Responses of growth and afforestation performance of Pinus tabuliformis container and bareroot seedlings to fall fertilization [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2023, 47(1): 136-144.