油蒿资源利用效率在生长季的相对变化及对环境因子的响应

doi:10.17521/cjpe.2019.0214

植物生态学报 ›› 2019, Vol. 43 ›› Issue (10): 889-898.DOI: 10.17521/cjpe.2019.0214

油蒿资源利用效率在生长季的相对变化及对环境因子的响应

李鑫豪^1,²,闫慧娟^1,²,卫腾宙^1,²,周文君^1,²,贾昕^1,^2,³,查天山^1,^2,^3,^*()

¹北京林业大学水土保持学院, 北京 100089
²宁夏盐池毛乌素沙地生态系统国家定位观测研究站, 北京 100089
³北京林业大学水土保持国家林业局重点实验室, 北京 100089

收稿日期:2019-08-07 接受日期:2019-10-14 出版日期:2019-10-20 发布日期:2020-02-24
通讯作者: 查天山
基金资助:
国家自然科学基金(31670708);国家自然科学基金(31670710);中央高校基本科研业务费专项资金(2015ZCQ-SB-02)

Relative changes of resource use efficiencies and their responses to environmental factors in Artemisia ordosica during growing season

LI Xin-Hao^1,²,YAN Hui-Juan^1,²,WEI Teng-Zhou^1,²,ZHOU Wen-Jun^1,²,JIA Xin^1,^2,³,ZHA Tian-Shan^1,^2,^3,^*()

¹School of Soil and Water Conservation, Beijing Forestry University, Beijing 100089, China
²Yanchi Ecology Research Station of Mau Us Desert, Beijing 100089, China
³Key Laboratory of State Forestry Administration on Soil and Water Conservation, Beijing Forestry University, Beijing 100089, China

Received:2019-08-07 Accepted:2019-10-14 Online:2019-10-20 Published:2020-02-24
Contact: ZHA Tian-Shan
Supported by:
the National Natural Science Foundation of China(31670708);the National Natural Science Foundation of China(31670710);the Fundamental Research Funds for the Central Universities(2015ZCQ-SB-02)

摘要/Abstract

摘要：

为了探明西北半干旱区典型沙生植物油蒿(Artemisia ordosica)叶水平资源利用效率的相对变化及对环境因子的响应机制, 该研究于2018年5-10月, 使用LI-6400XT便携式光合仪测定了毛乌素沙地油蒿叶片的净光合速率(P_n)、蒸腾速率(E)、叶表面光合有效辐射(PAR_l)、叶表面温度(T_l)、叶表面相对湿度(RH_l), 在实验室计算叶片单位面积氮含量(N_area), 分析了叶片氮利用效率(NUE)、水分利用效率(WUE)、光利用效率(LUE)与环境因子之间的关系及NUE、WUE、LUE之间的相对变化。研究结果表明, 在充足且稳定光强下油蒿的P_n主要受温度的影响, NUE、WUE与VPD_l、T_l之间具有显著负相关关系, NUE、WUE与LUE间为正相关关系, NUE、WUE和LUE最大值分别发生在5、7和9月, 分别为9.43 μmol CO₂·g^-1·s^-1、3.86 mmol·mol^-1、0.04 mol·mol^-1, 资源利用效率的变化主要受P_n的影响。温度通过影响植物N分配来改变P_n, 进而影响着资源利用效率, WUE与LUE显著正相关, 对构建荒漠区生态系统能量交换过程模型有重要意义。

关键词: 光合作用, 氮利用效率, 水分利用效率, 光利用效率, 油蒿

Abstract:

Aims This study is to examine the relative changes in resource use efficiencies and their responses to the environmental variables of a typical desert plant Artemisia ordosica in the semi-arid area of Northwest China. Methods We measured the net photosynthetic rate (P_n), transpiration rate (E), leaf surface photosynthetically active radiation (PAR_l), leaf surface temperature (T_l), leaf surface relative humidity (RH_l) of Artemisia ordosica from May to October, 2018 using a portable photosynthesis analyzer. We also analyzed nitrogen per leaf area (N_area) in the lab. We related nitrogen use efficiency (NUE), water use efficiency (WUE), light use efficiency (LUE) of the plant and their relative changes to the environmental variables. Important findings Temperature mainly affected the P_n of Artemisia ordosica under sufficient and stable light intensity. There was a significantly negative correlation between NUE, WUE and VPD₁, T_l. NUE, WUE and LUE was positively correlated. The maximum NUE, WUE and LUE occurred in May, July and September, respectively, being 9.43 μmol CO₂·g^-1·s^-1, 3.86 mmol·mol^-1, and 0.04 mol·mol^-1. The changes in resource use efficiencies were mainly affected by P_n. The results indicate that temperature affects resource use efficiencies by affecting the distribution of plant N and changes in P_n. WUE was significantly and positively correlated with LUE. These results may contribute to development of the energy exchange process model for the desert ecosystems.

Key words: photosynthesis, nitrogen use efficiency, water use efficiency, light use efficiency, Artemisia ordosica

李鑫豪, 闫慧娟, 卫腾宙, 周文君, 贾昕, 查天山. 油蒿资源利用效率在生长季的相对变化及对环境因子的响应. 植物生态学报, 2019, 43(10): 889-898. DOI: 10.17521/cjpe.2019.0214

LI Xin-Hao, YAN Hui-Juan, WEI Teng-Zhou, ZHOU Wen-Jun, JIA Xin, ZHA Tian-Shan. Relative changes of resource use efficiencies and their responses to environmental factors in Artemisia ordosica during growing season. Chinese Journal of Plant Ecology, 2019, 43(10): 889-898. DOI: 10.17521/cjpe.2019.0214

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https://www.plant-ecology.com/CN/Y2019/V43/I10/889

图/表 7

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日期 Date (Month-day)	E (mmol·m^-2·s^-1)	g_s (mol·m²·s^-1)	N_area (g·m^-2)	SLA (cm²·g^-1)	LSP (μmol·m^-2·s^-1)	P_n (μmol·m^-2·s^-1)	PAR (μmol·m^-2·s^-1)
05-16	14.11 (1.6)	0.51 (0.03)	4.29 (1.20)	61.30 (10.20)	1 057 (95.1)	28.78 (5.6)	1 476.21 (96.7)
05-22	10.60 (2.4)	0.72 (0.11)	4.16 (0.41)	72.77 (12.10)	1 034 (26.8)	39.30 (5.1)	1 787.40 (102.4)
06-04	11.63 (1.9)	0.38 (0.05)	4.24 (0.57)	43.22 (6.07)	792 (54.7)	22.40 (4.2)	1 185.47 (123.7)
06-13	12.84 (1.5)	0.41 (0.06)	4.36 (0.81)	45.55 (5.47)	784 (43.2)	22.42 (4.1)	1 357.43 (111.9)
06-23	16.40 (3.4)	0.53 (0.09)	3.85 (0.73)	61.98 (8.81)	694 (41.9)	24.30 (3.6)	1 260.54 (98.6)
07-05	17.93 (4.1)	0.48 (0.08)	3.70 (0.42)	75.20 (7.34)	1 119 (80.6)	21.16 (2.7)	1 662.20 (89.4)
07-13	16.14 (1.9)	0.52 (0.12)	3.61 (0.64)	60.50 (10.31)	731 (45.7)	19.77 (3.4)	1 319.01 (127.5)
07-23	6.68 (0.9)	0.37 (0.06)	3.83 (0.78)	83.50 (14.81)	1 234 (56.4)	33.36 (4.1)	1 152.30 (131.6)
08-05	5.30 (0.8)	0.36 (0.09)	3.83 (0.17)	60.84 (4.59)	594 (12.9)	10.70 (1.9)	766.48 (234.8)
08-14	8.80 (1.1)	0.46 (0.10)	4.04 (0.59)	56.34 (4.96)	779 (61.1)	23.10 (5.1)	927.46 (194.5)
08-23	12.83 (5.4)	0.49 (0.14)	3.95 (0.88)	58.53 (10.31)	613 (31.8)	11.94 (2.7)	746.55 (84.9)
09-02	14.20 (3.9)	0.68 (0.22)	3.91 (0.46)	72.58 (11.62)	847 (61.7)	27.01 (4.1)	1 148.57 (154.6)
09-14	7.21 (2.1)	0.63 (0.19)	3.81 (0.53)	68.65 (9.96)	880 (31.1)	23.34 (4.5)	1 156.36 (164.8)
09-23	5.68 (1.1)	0.59 (0.18)	4.12 (0.33)	65.02 (8.13)	764 (26.8)	20.28 (4.2)	1 192.83 (147.6)

日期 Date (Month-day)	E (mmol·m^-2·s^-1)	g_s (mol·m²·s^-1)	N_area (g·m^-2)	SLA (cm²·g^-1)	LSP (μmol·m^-2·s^-1)	P_n (μmol·m^-2·s^-1)	PAR (μmol·m^-2·s^-1)
05-16	14.11 (1.6)	0.51 (0.03)	4.29 (1.20)	61.30 (10.20)	1 057 (95.1)	28.78 (5.6)	1 476.21 (96.7)
05-22	10.60 (2.4)	0.72 (0.11)	4.16 (0.41)	72.77 (12.10)	1 034 (26.8)	39.30 (5.1)	1 787.40 (102.4)
06-04	11.63 (1.9)	0.38 (0.05)	4.24 (0.57)	43.22 (6.07)	792 (54.7)	22.40 (4.2)	1 185.47 (123.7)
06-13	12.84 (1.5)	0.41 (0.06)	4.36 (0.81)	45.55 (5.47)	784 (43.2)	22.42 (4.1)	1 357.43 (111.9)
06-23	16.40 (3.4)	0.53 (0.09)	3.85 (0.73)	61.98 (8.81)	694 (41.9)	24.30 (3.6)	1 260.54 (98.6)
07-05	17.93 (4.1)	0.48 (0.08)	3.70 (0.42)	75.20 (7.34)	1 119 (80.6)	21.16 (2.7)	1 662.20 (89.4)
07-13	16.14 (1.9)	0.52 (0.12)	3.61 (0.64)	60.50 (10.31)	731 (45.7)	19.77 (3.4)	1 319.01 (127.5)
07-23	6.68 (0.9)	0.37 (0.06)	3.83 (0.78)	83.50 (14.81)	1 234 (56.4)	33.36 (4.1)	1 152.30 (131.6)
08-05	5.30 (0.8)	0.36 (0.09)	3.83 (0.17)	60.84 (4.59)	594 (12.9)	10.70 (1.9)	766.48 (234.8)
08-14	8.80 (1.1)	0.46 (0.10)	4.04 (0.59)	56.34 (4.96)	779 (61.1)	23.10 (5.1)	927.46 (194.5)
08-23	12.83 (5.4)	0.49 (0.14)	3.95 (0.88)	58.53 (10.31)	613 (31.8)	11.94 (2.7)	746.55 (84.9)
09-02	14.20 (3.9)	0.68 (0.22)	3.91 (0.46)	72.58 (11.62)	847 (61.7)	27.01 (4.1)	1 148.57 (154.6)
09-14	7.21 (2.1)	0.63 (0.19)	3.81 (0.53)	68.65 (9.96)	880 (31.1)	23.34 (4.5)	1 156.36 (164.8)
09-23	5.68 (1.1)	0.59 (0.18)	4.12 (0.33)	65.02 (8.13)	764 (26.8)	20.28 (4.2)	1 192.83 (147.6)

日期 Date (Month-day)	P_c	P_b	P_l	P_p
05-16	0.210 (0.06)	0.015 (0.005)	0.050 (0.010)	0.275 (0.06)
05-22	0.340 (0.06)	0.025 (0.006)	0.006 (0.021)	0.347 (0.05)
06-04	0.281 (0.02)	0.014 (0.002)	0.018 (0.015)	0.301 (0.03)
06-13	0.282 (0.04)	0.016 (0.003)	0.050 (0.010)	0.297 (0.04)
06-23	0.230 (0.07)	0.019 (0.003)	0.013 (0.021)	0.248 (0.05)
07-05	0.211 (0.06)	0.030 (0.005)	0.002 (0.012)	0.253 (0.06)
07-13	0.206 (0.04)	0.020 (0.002)	0.050 (0.012)	0.276 (0.04)
07-23	0.242 (0.10)	0.029 (0.006)	0.075 (0.026)	0.350 (0.03)
08-05	0.190 (0.01)	0.023 (0.003)	0.044 (0.011)	0.253 (0.02)
08-14	0.282 (0.03)	0.029 (0.008)	0.004 (0.011)	0.311 (0.03)
08-23	0.270 (0.03)	0.015 (0.002)	0.030 (0.006)	0.291 (0.03)
09-02	0.272 (0.06)	0.018 (0.001)	0.004 (0.012)	0.282 (0.04)
09-14	0.261 (0.04)	0.015 (0.003)	0.039 (0.010)	0.308 (0.04)
09-23	0.290 (0.04)	0.022 (0.006)	0.006 (0.009)	0.318 (0.05)

日期 Date (Month-day)	P_c	P_b	P_l	P_p
05-16	0.210 (0.06)	0.015 (0.005)	0.050 (0.010)	0.275 (0.06)
05-22	0.340 (0.06)	0.025 (0.006)	0.006 (0.021)	0.347 (0.05)
06-04	0.281 (0.02)	0.014 (0.002)	0.018 (0.015)	0.301 (0.03)
06-13	0.282 (0.04)	0.016 (0.003)	0.050 (0.010)	0.297 (0.04)
06-23	0.230 (0.07)	0.019 (0.003)	0.013 (0.021)	0.248 (0.05)
07-05	0.211 (0.06)	0.030 (0.005)	0.002 (0.012)	0.253 (0.06)
07-13	0.206 (0.04)	0.020 (0.002)	0.050 (0.012)	0.276 (0.04)
07-23	0.242 (0.10)	0.029 (0.006)	0.075 (0.026)	0.350 (0.03)
08-05	0.190 (0.01)	0.023 (0.003)	0.044 (0.011)	0.253 (0.02)
08-14	0.282 (0.03)	0.029 (0.008)	0.004 (0.011)	0.311 (0.03)
08-23	0.270 (0.03)	0.015 (0.002)	0.030 (0.006)	0.291 (0.03)
09-02	0.272 (0.06)	0.018 (0.001)	0.004 (0.012)	0.282 (0.04)
09-14	0.261 (0.04)	0.015 (0.003)	0.039 (0.010)	0.308 (0.04)
09-23	0.290 (0.04)	0.022 (0.006)	0.006 (0.009)	0.318 (0.05)

	a	b	c	d	i	SSE	R²	p	AIC
E	-0.004 5 (0.774 5)				21.130 0 (9.446 3)	347.4	0.083 3	0.998 9	50.95
T_l	-0.567 3 (5.304 0)				37.450 0 (2.940 0)	224.7	0.353 1	0.025 1	44.86
PAR_l	-0.007 6 (0.010 6)				29.320 0 (11.833 7)	288.6	0.169 2	0.144 0	48.36
N_area	-0.125 7 (4.862 4)				21.560 0 (18.830 0)	347.3	0.000 3	0.956 0	50.96
E × T_l	0.373 2 (0.684 5)	-0.689 4 (0.529 1)			36.698 2 (14.125 5)	198.7	0.427 9	0.046 3	45.14
E × PAR_l	0.892 3 (0.979 6)	-0.017 8 (0.014 7)			30.043 7 (10.716 9)	211.4	0.391 5	0.065 1	46.01
E × N_area	-0.006 7 (0.824 3)	-0.130 0 (5.157 6)			21.650 4 (22.947 2)	347.3	0.000 3	0.998 4	52.96
T_l × PAR_l	-0.526 2 (0.648 0)	-0.001 3 (0.012 6)			37.658 2 (15.047 4)	223.7	0.356 1	0.088 8	46.80
T_l × N_area	-0.581 4 (0.510 8)	-0.796 4 (4.135 7)			40.900 1 (23.240 6)	221.1	0.363 5	0.083 4	46.63
N_area × PAR_l	-0.776 6 (4.740 7)	-0.008 0 (0.011 4)			32.677 2 (23.971 2)	285.2	0.178 9	0.338 2	52.20
E × T_l × PAR_l	0.824 8 (0.903 7)	-0.478 1 (0.581 3)	-0.011 3 (0.015 7)		37.566 1 (13.437 9)	158.2	0.544 5	0.041 8	43.95
E × T_l × N_area	0.367 4 (0.722 6)	-0.699 8 (0.561 1)	-0.696 5 (4.138 5)		39.723 7 (23.345 1)	195.9	0.435 9	0.112 3	46.94
E × PAR_l × N_area	0.909 9 (1.027 7)	-0.018 5 (0.015 7)	-1.043 5 (4.281 2)		34.571 8 (21.699 6)	205.3	0.408 9	0.138 7	47.60
T_l × PAR_l × N_area	-0.529 9 (0.681 9)	-0.001 7 (0.013 4)	-0.871 6 (4.416 7)		41.487 4 (25.038 0)	219.5	0.368 3	0.186 7	48.53
E × T_l × PAR_l × N_area	0.843 1 (0.948 1)	-0.481 7 (0.608 5)	-0.012 0 (0.016 7)	-1.110 3 (3.935 1)	42.441 8 (22.281 5)	151.4	0.564 2	0.084 3	45.33

油蒿资源利用效率在生长季的相对变化及对环境因子的响应

Relative changes of resource use efficiencies and their responses to environmental factors in Artemisia ordosica during growing season

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		SWC₁₀	SWC₃₀	T_l	VPD_l
NUE	R²	0.38	0.21	-0.30	-0.29
NUE	p	0.176 9	0.461 3	0.031 0	0.025 5
WUE	R²	-0.08	0.07	-0.42	-0.31
WUE	p	0.772 0	0.804 6	0.010 9	0.036 9
LUE	R²	0.001	0.12	-0.28	-0.27
LUE	p	0.996 4	0.679 2	0.051 3	0.058 0

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