Journal of Natural Resources, Volume. 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
Figures & Tables(10)
Fig. 1. Distribution of meteorological stations in the tableland protected region of the Loess Plateau
Fig. 2. Variation of potential evapotranspiration in the tableland protected region of the Loess Plateau during 1960-2017
Fig. 3. Spatial distribution of potential evapotranspiration in the tableland protected region of the Loess Plateau during 1960-2017
Fig. 4. Spatial distribution of Mann-Kendall's
Fig. 5. The wavelet analysis of the variation of potential evapotranspiration in the study area
Table 1. The relationship between potential evapotranspiration and meteorological factors in the study area
View tableView in ArticleTable 1. The relationship between potential evapotranspiration and meteorological factors in the study area
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 2. The relationship between potential evapotranspiration and meteorological factors in the three tableland regions
View tableView in ArticleTable 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 0.478** 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 3. The contribution of meteorological factors to the regional potential evapotranspiration
View tableView in ArticleTable 3. The contribution of meteorological factors to the regional potential evapotranspiration
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 4. The relationship between potential evapotranspiration and the circulation factors
View tableView in ArticleTable 4. The relationship between potential evapotranspiration and the circulation factors
不同类型 ET 0NAO 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 5. Comparison of estimated and observed values of potential evapotranspiration
View tableView in ArticleTable 5. Comparison of estimated and observed values of potential evapotranspiration
乡宁 蒲县 汾西 吉县 ET 0估算值/mm56.3 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
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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
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Received: Jan. 18, 2019
Accepted: --
Published Online: Oct. 17, 2020
The Author Email: LI Xin-gong (lixi@ku.edu)
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