Spatio-temporal distribution of the potential evapotranspiration and its controlling factors in the tableland protected region of the Loess Plateau

Cong-jian SUN; Zhen-jing ZHENG; Xin-gong LI; Jiu-lin SUN

doi:10.31497/zrzyxb.20200409

Journals >Journal of Natural Resources >Volume 35 >Issue 4 >Page 857 > Article

Journal of Natural Resources
Vol. 35, Issue 4, 857 (2020)

Spatio-temporal distribution of the potential evapotranspiration and its controlling factors in the tableland protected region of the Loess Plateau

Cong-jian SUN^1,2, Zhen-jing ZHENG¹, Xin-gong LI^1,*, and Jiu-lin SUN^1,3

Author Affiliations

¹School of Geographical Sciences, Shanxi Normal University, Linfen 041000, Shanxi, China

²State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China

³Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

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DOI: 10.31497/zrzyxb.20200409 Cite this Article

Cong-jian SUN, Zhen-jing ZHENG, Xin-gong LI, Jiu-lin SUN. Spatio-temporal distribution of the potential evapotranspiration and its controlling factors in the tableland protected region of the Loess Plateau[J]. Journal of Natural Resources, 2020, 35(4): 857 Copy Citation Text

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Fig. 1. Distribution of meteorological stations in the tableland protected region of the Loess Plateau

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Fig. 2. Variation of potential evapotranspiration in the tableland protected region of the Loess Plateau during 1960-2017

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Fig. 3. Spatial distribution of potential evapotranspiration in the tableland protected region of the Loess Plateau during 1960-2017

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Fig. 4. Spatial distribution of Mann-Kendall's Z value for potential evapotranspiration in the tableland protected region of the Loess Plateau during 1960-2017

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Fig. 5. The wavelet analysis of the variation of potential evapotranspiration in the study area

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	平均风速	平均气温	最高气温	最低气温	日照时数	相对湿度
年	-0.478^**	0.889^**	0.809^**	0.506^**	0.215	-0.662^**
生长季	-0.460^**	0.754^**	0.797^**	0.477^**	0.183	-0.569^**
非生长季	-0.297^*	0.537^**	0.659^**	0.316^*	0.139	-0.344^**

Table 1. The relationship between potential evapotranspiration and meteorological factors in the study area

	时段/年	风速	平均气温	最高气温	最低气温	日照时数	相对湿度
整体	1960-2017	0.478^**	0.809^**	0.889^**	0.506^**	0.215	0.662^**
甘肃塬区	1960-2017	0.024	0.781^**	0.889^**	0.572^**	0.613^**	0.886^**
山西塬区	1960-2017	0.562^**	0.804^**	0.915^**	0.113	0.253	0.300^*
陕西塬区	1960-2017	0.263^*	0.652^**	0.770^**	0.436^**	0.575^**	0.827^**

Table 2. The relationship between potential evapotranspiration and meteorological factors in the three tableland regions

	时段/年	风速	平均气温	最高气温	最低气温	日照时数	相对湿度
整体	1960—2017	0.02	0.23	0.14	0.31	0.05	0.05
甘肃塬区	1960—2017	0.02	0.48	0.11	0.29	0.01	0.09
山西塬区	1960—2017	0.13	0.19	0.38	0.10	0.02	0.18
陕西塬区	1960—2017	0.12	0.28	0.07	0.20	0.06	0.27

Table 3. The contribution of meteorological factors to the regional potential evapotranspiration

不同类型ET₀	NAO	AO	ENSO	PNA	AMO	WPI
年	-0.055	-0.038	0.002	0.278^*	0.597^**	-0.081
生长季	-0.326^*	-0.136	0.094	0.046	0.577^**	-0.308
非生长季	0.109	-0.167	0.019	0.18	0.402^**	0.433^**
甘肃塬区	-0.122	-0.128	0.008	0.293^*	0.487^**	-0.004
山西塬区	-0.007	0.010	-0.01	0.321^*	0.673^**	-0.114
陕西塬区	-0.088	-0.064	0.016	0.167	0.440^**	-0.052

Table 4. The relationship between potential evapotranspiration and the circulation factors

	乡宁	蒲县	汾西	吉县
ET₀估算值/mm	56.3	52.4	52.8	40.7
蒸发皿蒸发量/mm	47.9	47.0	47.1	48.3
误差/%	-17.6	-11.4	-12.1	15.6

Table 5. Comparison of estimated and observed values of potential evapotranspiration

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