Trends and influencing factors of potential evapotranspiration in typical forest ecosystems of China during 1998-2017

Wanxin SUN; Li ZHANG; Xiaoli REN; Honglin HE; Yan LÜ; Zhongen NIU; Qingqing CHANG

doi:10.18402/resci.2020.05.10

Journals >Resources Science >Volume 42 >Issue 5 >Page 920 > Article

Resources Science
Vol. 42, Issue 5, 920 (2020)

Trends and influencing factors of potential evapotranspiration in typical forest ecosystems of China during 1998-2017

Wanxin SUN^1、2、3, Li ZHANG^{1、2、4、*}, Xiaoli REN^1、2, Honglin HE^1、2、4, Yan LÜ^1、2、3, Zhongen NIU^1、2、3, and Qingqing CHANG^1、2、3

Author Affiliations

¹Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;

²National Ecosystem Science Data Center, Beijing 100101, China;

³University of Chinese Academy of Sciences, Beijing 100049, China;

⁴College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China

show less

DOI: 10.18402/resci.2020.05.10 Cite this Article

Wanxin SUN, Li ZHANG, Xiaoli REN, Honglin HE, Yan LÜ, Zhongen NIU, Qingqing CHANG. Trends and influencing factors of potential evapotranspiration in typical forest ecosystems of China during 1998-2017[J]. Resources Science, 2020, 42(5): 920 Copy Citation Text

show less

Fig. 1. Distribution of 11 typical forest ecosystems in China

Download full size | View in the Article

Fig. 2. Multi-year mean (a) and trends (b) of annual potential evapotranspiration at the forest sites of the Chinese Ecosystem Research Network (CERN)

Download full size | View in the Article

Fig. 3. Contribution of meteorological factors to the trends of potential evapotranspiration at the forest sites of the Chinese Ecosystem Research Network (CERN)

Download full size | View in the Article

Fig. 4. Comparison of PET_PM and PET_{_}_CMAin multi-year mean (a) and trends (b)

Download full size | View in the Article

Fig. 5. Comparison of annual mean of mean temperature (a), relative humidity (b), wind speed (c), and net radiation (d) between the forest sites of the Chinese Ecosystem Research Network (CERN) and nearby China Meteorological Administration (CMA) sites

Download full size | View in the Article

森林生态系统名称	海拔/m	年均温/^oC	年降水/mm	优势种	土壤类型	参考文献
长白山温带针阔混交林（CBF）	801.00	3.62	727.93	蒙古栎、色木槭、红松、水曲柳	暗棕壤	文献[25]
北京暖温带落叶阔叶混交林（BJF）	1263.00	4.80	530.38	油松、华北落叶松、辽东栎	棕壤	文献[26]
茂县暖温带针阔混交林（MXF）	1826.00	9.30	825.20	云杉、红桦	棕壤	文献[27]
神农架亚热带常绿落叶阔叶混交林（SNF）	1750.00	10.64	1456.71	米心水青冈、锐齿槲栎、红桦	黄棕壤	文献[28]
贡嘎山亚高山暗针叶林（GGF）	3160.00	4.80	1860.50	峨眉冷杉、糙皮桦	暗棕壤	文献[29]
千烟洲亚热带人工常绿针叶林（QYF）	100.00	17.90	1489.00	湿地松、杉木、马尾松	红壤	文献[30]
会同亚热带次生常绿阔叶林（HTF）	700.00	16.47	1234.01	红栲、青冈、刨花楠	红壤、红黄壤	文献[31]
哀牢山亚热带湿性常绿阔叶林（ALF）	2488.00	11.68	1728.54	木果石栎、多花含笑	黄棕壤	文献[32]
鼎湖山亚热带季风常绿阔叶林（DHF）	290.00	22.25	1844.36	木荷、厚壳桂	赤红壤	文献[33]
鹤山亚热带人工常绿阔叶林（HSF）	80.00	21.98	1663.71	马占相思	赤红壤	文献[34]
西双版纳热带季雨林（BNF）	750.00	22.65	1396.70	番龙眼、千果榄仁	砖红壤	文献[35]

Table 1. Site characteristics of 11 typical forest ecosystem research stations

	春季		夏季		秋季		冬季
	PET_PM	PET_PT	PET_PM	PET_PT	PET_PM	PET_PT	PET_PM	PET_PT
CBF	-1.21	-0.60	-0.65	-0.76	0.06	0.90	-0.67**	-0.25**
BJF	-1.65	-2.70*	-5.74**	-7.51**	-3.71**	-4.28**	-0.79**	-0.61**
MXF	0.44	1.76	1.71	3.84	-0.47	0.42	0.62	0.84
SNF	0.03	0.46	2.15	3.25	-0.31	-0.05	1.49	2.09
GGF	0.03	0.06	-1.89*	-2.24*	-0.77	-1.03	-0.30	-0.45
QYF	0.01	-1.36	-1.92	-2.69	-2.28*	-3.60**	-0.04	-0.90
HTF	-0.76	-0.72	2.43	2.81	-0.16	-0.04	0.61	0.44
ALF	2.10	4.26*	0.29	0.88	1.97	3.09*	0.40	2.48*
DHF	-0.54	-0.74	0.17	-0.21	-0.65	-0.73	0.29	0.18
HSF	-2.35**	-2.33*	-1.63	-0.85	-1.06	0.42	-0.36	0.62
BNF	-2.87*	-3.57*	-3.21*	-4.10*	-2.27	-2.91	-1.34	-1.70

Table 2. Trends of potential evapotranspiration in different seasons at the forest sites of the Chinese Ecosystem Research Network (CERN) (mm/a)

	大气压	平均气温	相对湿度	风速	净辐射
CBF	-0.27	0.11	-0.04	0.10	0.60
BJF	-0.23	0.15	-0.03	0.15	0.62
MXF	-0.25	0.28	-0.82	0.07	0.72
SNF	-0.34	0.25	-0.37	0.02	0.85
GGF	-0.41	0.13	-0.02	-0.01	0.91
QYF	-0.25	0.36	-0.04	0.04	0.83
HTF	-0.18	0.38	-0.06	0.10	0.71
ALF	-0.24	0.33	-1.11	0.04	0.75
DHF	-0.14	0.43	-0.72	0.11	0.76
HSF	-0.14	0.44	-0.07	0.11	0.76
BNF	-0.26	0.34	-0.02	0.01	0.96
平均	-0.24	0.29	-0.30	0.07	0.77

Table 3. Sensitivity of potential evapotranspiration to meteorological factors at the forest sites of the Chinese Ecosystem Research Network (CERN)

	大气压/(kPa/a)		平均气温/(^oC/a)		相对湿度/(%/a)		风速/(m/s/a)		净辐射/(MJ/m²/a)
	CERN	CMA	CERN	CMA	CERN	CMA	CERN	CMA	CERN	CMA
CBF	-0.03**	0.01**	0.01	0.03	-0.07	0.00	-0.05**	0.00	-0.01	-0.02*
BJF	0.00	0.00	0.02	0.03	-0.13	-0.12	-0.02**	-0.04**	-0.14**	0.00
MXF	0.00	0.00	0.01	0.06	0.33*	0.50	-0.01	-0.06*	0.06	0.04
SNF	0.01*	-0.04	0.06	0.01	0.38*	0.43	0.01	0.03	0.05	0.04
GGF	0.00	0.00	0.04*	0.00	0.12	0.23	0.00	-0.01*	-0.04*	0.00
QYF	-0.01*	-0.01*	0.02	0.02	-0.37*	0.17	0.00	0.01	-0.07*	0.00
HTF	0.00	0.00	0.01	0.02	-0.12	-0.07	-0.01	-0.01	0.02	-0.01
ALF	0.00	0.01	0.03	0.05*	0.24	0.49	0.01	0.01*	0.09*	0.04
DHF	0.01*	-0.02**	0.02	-0.06**	-0.07	0.43*	-0.01*	0.03	-0.01	0.01
HSF	-0.01*	-0.02**	0.02	-0.03	0.12	0.13	-0.08**	0.00	-0.02	0.03**
BNF	0.00	0.00	0.04*	0.00	-0.05	0.02	-0.01**	0.04**	-0.09*	-0.01

Table 4. Trends of meteorological factors

	大气压	平均气温	相对湿度	风速	净辐射
CBF	0.03	0.22	0.48	-5.32	-0.71
BJF	0.00	0.40	0.74	-3.65	-9.41
MXF	-0.01	0.15	-3.65	-0.61	4.30
SNF	-0.02	0.80	-1.59	0.39	4.27
GGF	0.00	0.55	-0.29	-0.02	-3.14
QYF	0.02	0.25	2.78	0.25	-6.31
HTF	0.00	0.18	1.32	-0.79	1.37
ALF	0.00	0.67	-3.74	0.44	6.56
DHF	0.00	0.46	1.08	-1.23	-1.34
HSF	0.00	0.42	-2.00	-9.38	-1.72
BNF	0.00	0.60	0.17	-1.05	-9.92

Table 5. Contribution of meteorological factors to the trends of PET_ASCE (mm/a)

	年均值/(MJ/m²)			变化趋势/(MJ/m²/a)			拟合的辐射系数
	观测值	原始值	反推值	观测值	原始值	反推值	a_s	b_s	R²
CBF	13.42	12.46	13.62	-0.04	-0.02	-0.02	0.28	0.53	0.60
BJF	10.15	11.60	8.96	-0.16	-0.02	-0.02	0.15	0.52	0.49
MXF	12.04	12.70	11.92	-0.02	0.01	0.01	0.18	0.64	0.86
SNF	12.61	12.76	12.51	0.01	-0.02	-0.02	0.20	0.63	0.61
GGF	9.06	10.95	8.50	0.08	0.07	0.10	0.13	0.72	0.69
QYF	12.10	13.94	11.44	-0.03	-0.04	-0.04	0.14	0.59	0.76
HTF	10.79	11.51	10.51	-0.03	0.03	0.03	0.20	0.59	0.63
ALF	14.29	13.95	14.21	0.04	0.10	0.12	0.23	0.58	0.83
DHF	13.15	12.78	12.92	-0.02	0.04	0.05	0.23	0.59	0.66
HSF	12.54	11.32	12.32	-0.03	0.08	0.08	0.28	0.50	0.47
BNF	15.41	15.26	15.46	-0.01	0.01	0.01	0.26	0.49	0.68

Table 6. Fitting values of radiation coefficients of the forest sites of the Chinese Ecosystem Research Network (CERN) and the influence on calculation results of short-wave radiation

Download Citation

Save the article for my favorites

Paper Information