[1]Li Xin,Guo Wenfang,Wang Jiale,et al.Effects of Different Hedgerows on the Distribution of Water and Salt in the Surface Soil of Taihang Hillside[J].Research of Soil and Water Conservation,2023,30(06):187-196.[doi:10.13869/j.cnki.rswc.2023.06.043]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 06
Page number:
187-196
Column:
Public date:
2023-10-10
- Title:
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Effects of Different Hedgerows on the Distribution of Water and Salt in the Surface Soil of Taihang Hillside
- Author(s):
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Li Xin, Guo Wenfang, Wang Jiale, Chen Yanmei, Liu Qianyuan, Gao Fei, He Shulei
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(School of Geographical Sciences, Hebei Normal University, Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, Laboratory of Environmental Evolution and Ecological Construction of Hebei Province, Shijiazhuang 050024, China)
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- Keywords:
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Taihang hillside; hedgerow; soil water and salt distribution; principal component analysis; cluster analysis
- CLC:
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S365
- DOI:
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10.13869/j.cnki.rswc.2023.06.043
- Abstract:
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[Objective] The aims of this sutdy are to explore the effects of different hedgerows on water and salt distribution in surface soil of Taihang Mountains, and to provide theoretical and practical basis for optimal hedgerow layout and soil erosion reduction. [Methods] The hedgerow plots of Mentha haplocalyx Briq., Paeonia lactiflora Pall., Ageratina adenophora Spreng, Artemisia argyi, Physalis alkekengi L. and Houttuynia cordata Thunb in the south slope of Taihang Mountain with a slope of 13° and an altitude of 152 meters were taken as the research objects, and the blank bare land plot was taken as the control, the plant samples and 0—20 cm soil with upper, middle and lower belts in each plot were collected. The differences of plant physiological characteristics and soil water and salt characteristics were compared and analyzed. Principal component analysis and cluster analysis were used to comprehensively evaluate the influence of hedgerows on soil water and salt distribution. [Results](1)Differences in physiological characteristics of hedgerows were observed. The aboveground, underground and total biomass of Mentha haplocalyx Briq. and Paeonia lactiflora Pall. were higher, while those of Physalis alkekengi L. and Houttuynia cordata Thunb were lower. The root-shoot ratio of Paeonia lactiflora Pall. was the highest(p<0.05). The moisture contents of Physalis alkekengi L. and Houttuynia cordata Thunb were higher, while that of Paeonia lactiflora was the lowest.(2)Hedgerows affected soil water salinity on sloping land. Compared with the blank bare land, the average soil bulk density of the middle and lower hedgerows decreased by 9.23% and 7.22%. The average natural water content, saturated water capacity, capillary water capacity and field water capacity in the hedgerow increased by 8.10%, 14.98%, 21.49%, and 19.78%, respectively. The average conductivity under the hedgerow decreased by 9.97%.(3)Hedgerow type and hedgerow position had a cross effect on soil water and salt distribution. Hedgerow type significantly affected natural water content, saturated water holding capacity, capillary water holding capacity, field water holding capacity, soil pH and soil conductivity(p<0.05). Hedgerow position significantly affected soil conductivity(p<0.05). Plant type×hedgerow position significantly affected natural water content and soil conductivity(p<0.05).(4)The physiological characteristics of hedgerows were significantly correlated with soil water and salt. There were significant or extremely significant correlations between underground biomass, root shoot ratio, plant water content and soil water and salt indexes(p<0.05, p<0.01).(5)The order of influence ability of hedgerows on soil water and salt distribution was: Paeonia lactiflora Pall.>Ageratina adenophora Spreng>Physalis alkekengi L.>Houttuynia cordata Thunb>Mentha haplocalyx Briq.>Artemisia argyi. [Conclusion] Hedgerows significantly affected the distribution of water and salt in the surface soil of slope land. Paeonia lactiflora Pall. hedgerow had the strongest influence on the distribution of water and salt in the surface soil, while Artemisia argyi was the weakest. Therefore, the hedgerow of Paeonia lactiflora Pall. hedgerow can be preferred to prevent water and salt loss in slope land. If the hedgerow of Artemisia argyi is adopted, the mixed planting mode and reasonable layout should be adopted.