[1]DU Yujia,ZHAO Yonggang,LIU Xiaofang,et al.Effects of Strip Caragana korshinskii Plantation on Soil Moisture at Hillslope Scale in the Loess Hilly Region[J].Research of Soil and Water Conservation,2020,27(06):52-59.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
52-59
Column:
目次
Public date:
2020-10-20
- Title:
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Effects of Strip Caragana korshinskii Plantation on Soil Moisture at Hillslope Scale in the Loess Hilly Region
- Author(s):
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DU Yujia, ZHAO Yonggang, LIU Xiaofang, ZHANG Xingxing, REN Zeying, JIA Jiayu
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(College of Life Science, Shanxi Normal University, Linfen, Shanxi 041000, China)
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- Keywords:
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loess hilly region; plantation age; shrub-grass band; soil moisture
- CLC:
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S152.7
- DOI:
-
-
- Abstract:
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To further understand the effect of Caragana korshinskii plantation on soil moisture at hillslope scale in the loess hill region, the soil moisture contents were analyzed at three selected slope positions and four shrub-grass band positions(inter-band, front-band, inner-band and behind-band)under four transects: 15-, 25-, and 35-years old Caragana korshinskii plantations and native grassland as control. The results showed that:(1)compared with barren grassland, the soil moisture content of Caragana korshinskii reduced by 7.76%, 44.30% and 48.42% after 15-, 25-, and 35-years old, respectively; the soil moisture content at different slope positions was the highest on the top-slope, and the soil moisture contens of the mid-slope and lower-slope were significantly higher than that of the upper-slope;(2)there was no significant difference in soil moisture content among the inter-, front- and inner-band(p>0.05), but it was significantly higher than that of behind-band(p<0.05); significant differences of shrub-grass band mainly occurred in upper-, mid-, and lower-slope;(3)the redundant analysis showed that the plantation ages of Caragana korshinskii had the greatest effect on soil moisture content at hillslope scale, followed by altitude and slope gradient; variation partitioning analyses showed that the explanation variance of soil moisture by age, altitude and slope gradient was 4.8%, 3.6%, 2.3%, respectively, and the integrated explanation variance of all environmental factors reached to 65.2%. In general, long-time plantation of Caragana korshinskii in the loess hilly region significantly reduced the soil moisture content and heterogeneity along slope and depth. The plantation age and altitude were the main controlling factors at hillslope scale, while shrub-grass band also had significant impacts on soil moisture at small-scale.