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Article

The Soil Water Condition of a Typical Agroforestry System under the Policy of Northwest China

by 1,2, 1,2,* and 1
1
College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
2
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
*
Author to whom correspondence should be addressed.
Forests 2018, 9(12), 730; https://doi.org/10.3390/f9120730
Received: 29 September 2018 / Revised: 16 November 2018 / Accepted: 19 November 2018 / Published: 22 November 2018
(This article belongs to the Section Forest Ecology and Management)
The number of mixed cropland—apple orchard system has gradually increased in the Changwu Tableland region of the Loess Plateau, China. However, the soil water content (SWC) is not sufficient to maintain the sustainable development of apple trees in this agroforestry system. It is unclear whether the growing fruit trees would compete with crops for soil water. To systematically analyze the temporal and spatial distribution of soil moisture and to understand the effect of orchard hydrology in that cropland, the SWC was measured at different depths at different locations on cropland and in an apple orchard. The results show that: (1) The SWC of each soil layer in the cropland (0–20, 20–60, 60–100, 100–200, 200–300 cm) is higher than that of the orchard. The soil moisture changes dramatically in the 0–200 cm soil layer. (2) As the soil moisture monitoring distance from the apple orchard increases, the SWC gradually increases, the loss of soil water storage gradually decreases, and the drying effect gradually disappears. This is related to the different distribution ranges of the roots of apple trees and crops. Therefore, the government should control the proportion of the orchard and cropland, and then adjust the planting period of the orchard in the appropriate range to keep the green use of water in the region. View Full-Text
Keywords: cropland–apple orchard; land use; sustainable development; Loess Plateau; soil water content; soil water storage cropland–apple orchard; land use; sustainable development; Loess Plateau; soil water content; soil water storage
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MDPI and ACS Style

Zhang, J.; Wang, L.; Su, J. The Soil Water Condition of a Typical Agroforestry System under the Policy of Northwest China. Forests 2018, 9, 730. https://doi.org/10.3390/f9120730

AMA Style

Zhang J, Wang L, Su J. The Soil Water Condition of a Typical Agroforestry System under the Policy of Northwest China. Forests. 2018; 9(12):730. https://doi.org/10.3390/f9120730

Chicago/Turabian Style

Zhang, Jing, Li Wang, and Jingyuan Su. 2018. "The Soil Water Condition of a Typical Agroforestry System under the Policy of Northwest China" Forests 9, no. 12: 730. https://doi.org/10.3390/f9120730

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