| Effects of apple tree planting on soil evaporation in the Loess Tableland |
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| DOI：10.7606/j.issn.1000-7601.2023.05.06 |
| Key Words: apple orchard tree age soil evaporation hydrogen and oxygen isotopes Loess Tableland |
| Author Name | Affiliation | | HUA Yi | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling,Shaanxi 712100, China | | LU Yanwei | Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, School of Water and Environment, Chang’an University, Xi’an,Shaanxi 710054, China | | LI Min | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling,Shaanxi 712100, China | | WEI Haoyan | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling,Shaanxi 712100, China | | WANG Jianlong | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling,Shaanxi 712100, China | | PANGXUE Qingqiu | Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, School of Water and Environment, Chang’an University, Xi’an,Shaanxi 710054, China | | SI Bingcheng | School of Resoureces and Environmental Engineering, Ludong University, Yantai, Shangdong 264025, China |
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| Abstract: |
| The purpose of this study was to investigate the stable isotopes of hydrogen and oxygen in soil profiles of agricultural land and apple orchards of different stand ages (9, 12, 16,19 a and 23 a) in the Changwu Tableland of Shaanxi Province. Craig-Gordon model was used to quantitatively estimate soil evaporation, and thespace\|for\|time method was used to calculate soil evaporation. The influence of planting and growing of local orchard on soil evaporation was analyzed. The results showed that, the average annual soil evaporation of farmland and 9, 12, 16, 19 a and 23 a apple orchards were 129,104,89,119,128 mm and 136 mm, respectively. The change of soil evaporation in apple orchards was significantly negatively correlated with the leaf area index (R=-0.71). The soil evaporation in the early and middle stages （9~12 years）of apple orchard planting gradually decreased with the increase of leaf area index, while the drought stress caused by the large consumption of soil water in the middle and deep stages of the middle and late stages（12~23 years） forced the leaf area of fruit trees to decrease, resulting in the gradual increase of soil evaporation under the forest. |
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