[1]CHEN Fengfeng,ZHAO Jiangping,CHEN Yunming.Characteristics of Soil Moisture in Typical Young Plantations in Loess Hilly Region[J].Research of Soil and Water Conservation,2023,30(01):190-196.[doi:10.13869/j.cnki.rswc.20220511.001]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 01
Page number:
190-196
Column:
Public date:
2023-01-10
- Title:
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Characteristics of Soil Moisture in Typical Young Plantations in Loess Hilly Region
- Author(s):
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CHEN Fengfeng1,3, ZHAO Jiangping1, CHEN Yunming1,2
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(1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China; 2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; 3.Xifeng management supervision of soil and water conservation in the Yellow River, YRCC, MWR, Xifeng, Gansu 745000, China)
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- Keywords:
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Pinus tabulaeformis; Robinia pseudoacacia; Syzygium aromaticum; soil moisture; temporal and spatial changes; temporal stability; loess hilly area
- CLC:
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S152.7+5
- DOI:
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10.13869/j.cnki.rswc.20220511.001
- Abstract:
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In order to clarify the temporal and spatial changes of soil moisture in typical young plantations in loess hilly areas, soil moisture and meteorological data were collected through using the ECH2O soil moisture monitoring system and the standard runoff plot slope surface soil moisture observation method, and the soil moisture status and time stability of abandoned land and different types of young plantations were analyzed. The results show that:(1)compared with abandoned land, the soil moisture content of young plantation is generally lower, and has obvious seasonal change characteristics, and the change trend is basically the same, all of which increase or decrease with the increase or decrease of precipitation;(2)the vertical distribution of soil moisture in different types of plantations is quite different; compared with abandoned land, Robinia pseudoacacia and Pinus tabulaeformis forests have lower soil moisture at a depth of 50 cm, and high soil moisture at a depth of 80—120 cm; the soil moisture of young lilac forest is relatively low as a whole;(3)the representative depths of soil moisture of Pinus tabulaeformis and abandoned land are 120 cm and 80 cm, respectively; the evaluation of the results based on the coefficient of determination(R2≥0.9)and the Nash coefficient(NSE≥-0.1)show that the selection of the representative depth of soil moisture is acceptable, and the soil moisture of different depths of Robinia pseudoacacia and Syzygium aromaticum is quite different. These research results suggest that in loess hilly areas, young plantations significantly affect the vertical distribution of soil moisture, and the overall soil moisture content is low. Compared with abandoned land, the soil moisture variability of Robinia pseudoacacia and Syzygium aromaticum is greater, whereas the soil moisture variability of Pinus tabulaeformis is more stable.