Abstract：[Background] Pisha sandstone is a kind of interbedding generated in Mesozoic rock that is mainly distributed in Shanxi, Shaanxi and Inner Mongolia. Due to its special properties of collapsing easily encountering water, it is eroded seriously. Additionally, Aeolian sandy soil and Pisha sandstone are complementary in structure, and the both can be transformed into useful composite soil and be effectively utilized for planting through effective combination. However, the related research on improvement of soil structure and nutrients is mainly carried out in laboratory conditions and the systematic research of field test is rare, especially in the Kubuqi Desert.[Methods] The research was conducted by the field test method (each is 6 667 m2) to study the improving effect by adding different proportions of Pisha sandstone on the physical structure and nutrient characteristics of the Aeolian sand soil from the hinterland of Kubuqi Desert in the northwest of Ordos Plateau. In the experimental test field, the different volume ratios (0%, 30%, 50%, 80% and 100%) of Pisha sandstone were added and mixed evenly. Additionally, the Haloxylon ammodendron and Glycyrrhiza uralensis were inter-planted. One month later, the evaluation indexes include mainly soil capillary porosity, field water holding capacity, organic matter, available nitrogen and available phosphorus were tested.[Results] With the increase of the adding proportion of Pisha sandstone, the contents of clay, silt, capillary porosity, field water-holding capacity, soil aggregate, organic matter, available nitrogen and available phosphorus increase gradually and the sandy soil is improved significantly. Under the condition of the same proportion of Pisha sandstone, with the increasing soil depth (0-30 cm) of the improved soil, the contents of clay, silt, soil organic matter, available nitrogen and available phosphorus decrease, but the vertical variation characteristics of soil bulk density, capillary porosity and field water-holding capacity are small. And the variation is smaller with the increase of mixing proportion, showing the phenomenon of obvious surface aggregation. According to multiple indexes, the mixing ratio of 50% has the best improvement effect, which can be used as the boundary value for improving the Aeolian sand soil. Additionally, the structure of soil particle and aggregate is positively correlated with soil capillary porosity, field water-holding capacity, organic matter, available nitrogen and available phosphorus content, which shows that the particle size of Pisha sandstone and Aeolian sand soil is complementary.[Conculsions] This is the first time to study the composite soil by the field test in Kubuqi Desert. The physical and nutrient characteristics of sand soil are improved by Pisha sandstone. It can provide a reference for the large-scale popularization and application of Pisha sandstone to improve the Aeolian sandy soil in Kubuqi Desert and promote the desertification control.
边振, 张克斌. 我国荒漠化评价研究综述[J]. 中国水土保持科学, 2010, 8(1):105. BIAN Zhen, ZHANG Kebin. Review of the research on desertification assessment in China[J]. Science of Soil and Water Conservation, 2010, 8(1):105.
[2]
王睿. 库布齐沙漠可持续治理典型模式研究[J]. 西华师范大学学报(自然科学版), 2019, 40(1):96. WANG Rui. On the typical model of sustainable management in Hobq Desert[J]. Journal of China West Normal University (Natural Science), 2019, 40(1):96.
[3]
王愿昌, 吴永红, 李敏, 等. 砒砂岩地区水土流失及其治理途径研究[M]. 郑州:黄河水利出版社,2007:1. WANG Yuanchang, WU Yonghong, LI Min, et al. Research on the soil erosion in Pisha sandstone area and its control ways[M]. Zhengzhou:The Yellow River Water Conservancy Press, 2007:1.
[4]
LIANG Zhishui, WU Zhiren, YAO Wenyi, et al. Pisha sandstone:Causes, processes and erosion options for its control and prospects[J]. International Soil and Water Conservation Research, 2019, 7(1):1.
[5]
李晓丽, 苏雅, 齐晓华, 等. 高原丘陵区砒砂岩土壤特性的实验分析研究[J]. 内蒙古农业大学学报(自然科学版), 2011,32(1):315. LI Xiaoli, SU Ya, QI Xiaohua, et al. The experimental analysis study of soft sandstone soil properties in the plateau hilly region[J]. Journal of Inner Mongolia Agricultural University (Natural Science Edition), 2011,32(1):315.
[6]
WANG Ni, XIE Jiancang, HAN Jichang. A sand control and development model in sandy land based on mixed experiments of arsenic sandstone and sand:A case study in Mu Us Sandy Land in China[J]. Chinese Geographical Science, 2013, 23(6):56.
[7]
张露, 韩霁昌, 王欢元, 等. 砒砂岩与风沙土复配后的粒度组成变化[J]. 中国水土保持科学, 2015, 13(2):44. ZHANG Lu, HAN Qichang, WANG Huanyuan, et al. Grain size composition change after feldspathic sandstone and aeolian sandy soil compounding[J]. Science of Soil and Water Conservation, 2015, 13(2):44.
[8]
魏彬萌, 赵宣. 添加砒砂岩对风沙土性质的改良及时间效应[J]. 水土保持研究, 2017, 24(6):16. WEI Binmeng, ZHAO Xuan. Effect of addition of feldspathic sandstone on improvement of aeolian sand soil quality and the time effect[J]. Research of Soil and Water Conservation, 2017, 24(6):16.
[9]
摄晓燕, 张兴昌, 魏孝荣. 适量砒砂岩改良风沙土的吸水和保水特性[J]. 农业工程学报, 2014, 30(14):115. SHE Xiaoyan, ZHANG Xingchang, WEI Xiaorong. Improvement of water absorbing and holding capacities of sandy soil by appropriate amount of soft rock[J]. Transactions of the CSAE, 2014, 30(14):115.
[10]
赵宣, 韩霁昌, 王欢元. 砒砂岩与沙复配土生地·熟地中土壤有机碳及水稳定性团聚体含量的变化特征[J]. 安徽农业科学, 2015, 43(11):75. ZHAO Xuan, HAN Qichang, WANG Huanyuan. Variation characteristics of organic carbon and water stable aggregate of feldspathic sandstone and sand compound soil between raw land and cultivated land[J]. Journal of Anhui Agricultural Sciences, 2015, 43(11):75.
[11]
HAN Jichang, XIE Jianchang, ZHANG Yang. Potential role of feldspathic sandstone as a natural water, retaining agent in Mu Us Sandy Land, Northwest China[J]. Chinese Geographical Science, 2012, 22(5):550.
[12]
张杰, 郑太辉, 肖胜生, 等. 不同植被恢复模式对红砂岩土壤化学性质及抗蚀特征的影响[J]. 农业工程学报, 2018, 34(24):123. ZHANG Jie, ZHENG Taihui, XIAO Shengsheng, et al. Effects of different vegetative restoration patterns on soil chemical properties and corrosion resistance of soils derived from red sandstone[J]. Transactions of the CSAE, 2018, 34(24):123.
[13]
窦森, 李凯, 关松. 土壤团聚体中有机质研究进展[J]. 土壤学报, 2011, 48(2):412. DOU Sen, LI Kai, GUAN Song. A review on organic matter in soil aggregates[J]. Acta Pedologica Sinica, 2011, 48(2):412.
[14]
罗万银, 董治宝. 风蚀对土壤养分及碳循环影响的研究进展与展望[J]. 地理科学进展, 2005, 24(4):75. LUO Wanyin, DONG Zhibao. The progress and prospects of research on wind erosion induced soil nutrient and carbon cycling[J]. Progress in Geography, 2005, 24(4):75.
[15]
张立欣, 段玉玺, 王伟峰, 等. 毛乌素沙地不同植被类型的土壤颗粒分形与土壤碳氮变化特征[J]. 东北林业大学学报, 2016, 44(8):55. ZHANG Lixin, DUAN Yuxi, WANG Weifeng, et al. Characteristic of soil particle size distribution and soil organic carbon and nitrogen dynamics of different vegetation types in the Mu Us Sandy Land[J]. Journal of Northeast Forestry University, 2016, 44(8):55.
[16]
贾晓红, 李新荣, 李元寿. 干旱沙区植被恢复中土壤碳氮变化规律[J]. 植物生态学报, 2007, 31(1):66. JIA Xiaohong, LI Xinrong, LI Yuanshou. Soil organic carbon and nitrogen dynamics during the re-vegetation process in the arid desert region[J]. Journal of Plant Ecology, 2007, 31(1):66.
[17]
RONG Huang, LAN Muling, LIU Jiang, et al. Soil aggregate and organic carbon distribution at dry land soil and paddy soil:The role of different straws returning[J]. Environmental Science and Pollution Research, 2017, 24(36):1.
[18]
李秋嘉, 薛志婧, 周正朝. 宁南山区植被恢复对土壤团聚体养分特征及微生物特性的影响[J]. 应用生态学报, 2019, 30(1):140. LI Qiujia, XUE Zhijing, ZHOU Zhengchao. Effects of vegetation restoration on nutrient and microbial properties of soil aggregates with different particle sizes in the loess hilly regions of Ningxia, Northwest China[J]. Chinese Journal of Applied Ecology, 2019, 30(1):140.
2022, Vol. 20 
