[1]LIU Jun,YANG Kaiqi,LIU Ke,et al.Characteristics of Soil Water and Nutrients in Different Types Area of Pisha Sandstone in Inner Mongolia[J].Research of Soil and Water Conservation,2023,30(04):47-52.[doi:10.13869/j.cnki.rswc.2023.04.049.]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 04
Page number:
47-52
Column:
Public date:
2023-06-10
- Title:
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Characteristics of Soil Water and Nutrients in Different Types Area of Pisha Sandstone in Inner Mongolia
- Author(s):
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LIU Jun1, YANG Kaiqi2, LIU Ke1, MA Zhanghuai2
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(1.Water Resources Development Center, Water Resources Bureau of Jungar Banner, Jungar Banner, Inner Mongolia 010300, China; 2.College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China)
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- Keywords:
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exposed Pisha Sandstone area; soil-covered Pisha Sandstone area; sand-covered Pisha Sandstone area; soil water; organic carbon; total nitrogen
- CLC:
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S152.7; S158
- DOI:
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10.13869/j.cnki.rswc.2023.04.049.
- Abstract:
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[Objective] Exploring the effects of different types of Pisha Sandstone and different land use patterns on soil water, organic carbon and total nitrogen content plays an important guiding role in the further development of Pisha Sandstone area. [Methods] 13-year-old Seabuckthorn(Hippophae rhamnoides)woodland, 6-year-old Seabuckthorn woodland, natural grassland in the soil-covered Pisha Sandstone area of Jungar banner of Inner Mongolia, natural grassland in the exposed Pisha Sandstone area, and natural grassland, Caragana korshinskii woodland, farmland and 5-year-old abandoned farmland in the sand-covered Pisha Sandstone area, a total of eight sample plots were used as the research objects. By measuring the soil water content, organic carbon and total nitrogen content of different soil layer at a depth of 0—100 cm, the contents and variation of soil water, organic carbon and total nitrogen in different soil layers were studied and compared. [Results](1)The soil water storage in 0—100 cm soil layer in the soil-covered Pisha Sandstone area(13-year-old Seabuckthorn woodland(152.36 mm), 6-year-old Seabuckthorn woodland(165.16 mm), natural grassland(160.97 mm))was higher than that of the sand-covered Pisha Sandstone area(natural grassland(73.03 mm)and Caragana korshinskii woodland(66.56)mm), farmland(79.70 mm), and 5-year-old abandoned farmland(107.03 mm)).(2)Soil organic carbon content of grassland in the exposed Pisha Sandstone area was lower than that in the soil-covered and sand-covered Pisha Sandstone area. Soil organic carbon storage in the 0—100 cm soil layer(1.97 kg/m2)was lower than that of the natural grassland, 6-year-old and 13-year-old Seabuckthorn woodland in the soil-covered Pisha Sandstone area, natural grassland, Caragana korshinskii woodland, farmland and 5-year-old abandoned farmland in the sand-covered Pisha Sandstone area by 2.24 kg/m2, 2.36 kg/m2, 1.74 kg/m2, 1.23 kg/m2, 0.66 kg/m2, 2.58 kg/m2 and 1.21 kg/m2, respectively.(3)Compared with each type of Pisha Sandstone area, the total nitrogen storage of the grassland in the exposed Pisha Sandstone area was the lowest(0.18 kg/m2), which was lower than that of the natural grassland in the soil-covered Pisha Sandstone area and the natural grassland in the sand-covered Pisha Sandstone area by 0.22 kg/m2. [Conclusion] To sum up, the soil water storage, organic carbon and total nitrogen storage in the 0—100 cm soil layer of the 13-year-old Seabuckthorn woodland in the soil-covered Pisha Sandstone area and the Caragana korshinskii woodland in the sand-covered Pisha Sandstone area were all lower than those of the natural grassland in the same type of area. Caragana korshinskii and Seabuckthorn planting after a certain period of years, comprehensively considering the benefits of water conservation, it should be thinned to reduce the competition with understory herbss, thereby accelerating the natural succession of the understory vegetation and ensuring the sustainable development of the ecological environment in the Pisha Sandstone area.