1.内蒙古农业大学 沙漠治理学院, 内蒙古 呼和浩特 010018
2.内蒙古自治区林业科学研究院, 内蒙古 呼和浩特 010010
3.内蒙古自治区水利科学;研究院, 内蒙古 呼和浩特 010052
4.内蒙古自治区林业和草原监测规划院, 内蒙古 呼和浩特 010020
赵龙飞(2000—),男(汉族),河南省宜阳县人,硕士研究生,研究方向为水土保持与荒漠化防治。Email:zhaolongfei1012@163.com。
秦富仓(1966—),男(汉族),内蒙古自治区呼和浩特市人,博士,教授,主要从事水土保持方面研究。Email:Qinfc@126.com。
收稿:2024-11-20,
修回:2025-01-17,
纸质出版:2025-06-10
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赵龙飞, 秦富仓, 董晓宇, 等.腾格里沙漠两种白刺生境土壤粒度和养分的评价[J].水土保持通报,2025,45(3):213-223.
Zhao Longfei, Qin Fucang, Dong Xiaoyu, et al. Assessing soil particle size and nutrients of two Nitraria tangutorum nebkha habitats in Tengger Desert[J]. Bulletin of Soil and Water Conservation,2025,45(3):213-223.
赵龙飞, 秦富仓, 董晓宇, 等.腾格里沙漠两种白刺生境土壤粒度和养分的评价[J].水土保持通报,2025,45(3):213-223. DOI: 10.13961/j.cnki.stbctb.2025.03.005. CSTR: 32312.14.stbctb.2025.03.005..
Zhao Longfei, Qin Fucang, Dong Xiaoyu, et al. Assessing soil particle size and nutrients of two Nitraria tangutorum nebkha habitats in Tengger Desert[J]. Bulletin of Soil and Water Conservation,2025,45(3):213-223. DOI: 10.13961/j.cnki.stbctb.2025.03.005. CSTR: 32312.14.stbctb.2025.03.005..
目的
2
探究不同生境下灌丛土壤结构与养分的差异性,为沙漠地区综合治理及植被营建工作提供科学参考。
方法
2
选取腾格里沙漠东部沙地、盐碱地两种生境下白刺(
Nitraria tangutorum
)灌丛沙堆为研究对象,对其土壤粒径组成及土壤养分含量进行分析。
结果
2
①沙地、盐碱地白刺灌丛沙堆土壤粒径均以细砂为主,分别占总含量的55.03%~74.21%,44.71%~72.83%,土壤分选性均极好; ②白刺灌丛沙堆在盐碱地(1.86~2.32)土壤分形维数显著高于沙地(1.62~1.72)。分形维数从白刺灌丛沙堆顶部到坡脚均呈现出减小的趋势,而随着土层深度的增加同样呈现减小的趋势。 ③盐碱地白刺灌丛沙堆土壤全氮(TN)(3.35~4.24 g/kg)、全磷(TP)(0.11~0.26 g/kg)、全钾(TK)(0.44~0.65 g/kg)显著高于沙地白刺灌丛沙堆土壤TN(1.48~3.43 g/kg)、TP(0.10~0.22 g/kg)、TK(0.30~0.61 g/kg)含量,且与细颗粒含量呈正相关性,与粗颗粒含量呈负相关。
结论
2
白刺灌丛对土壤环境的适应与改良能力在不同生境下具有不同的表现形式,沙地与盐碱地生境下白刺灌丛土壤颗粒组成与土壤养分含量存在相关性,因此可以通过增加土壤细颗粒含量改善土壤养分条件。
Objective
2
The differences in soil structure and nutrients in shrublands in different habitats were explored to provide a reference for management and ecosystem restoration in desert areas.
Methods
2
Nitraria tangutorum
nebkhas in sandy and saline-alkali land in the eastern Tengger Desert were selected as research subjects. Soil particle size composition and soil nutrient content were analyzed.
Results
2
① The soil particle size of
N. tangutorum
nebkhas in sandy land and saline-alkali land was mainly fine sand, accounting for 55.03%—74.21% and 44.71%—72.83% of the total content, respectively. Soil sorting was excellent in both habitats. ② The soil fractal dimension of
N. tangutorum
nebkhas in saline-alkali land (1.86—2.32) was significantly higher than that in sandy land (1.62—1.72). The fractal dimension shows a decreasing trend from the top of the Nitraria tangutorum nebkhas to the foot of the slope, and also shows a decreasing trend with the increase of soil depth. ③ The contents of TN (3.35—4.24 g/kg), TP (0.11—0.26 g/kg) and TK (0.44—0.65 g/kg) in the soil of
N. tangutorum
nebkhas in saline-alkali land were significantly higher than those in the soil of
N. tangutorum
nebkhas in sandy land (1.48—3.43 g/kg), TP (0.10—0.22 g/kg) and TK (0.30—0.61 g/kg). It is positively correlated with the content of fine particles and negatively correlated with the content of coarse particles.
Conclusion
2
The adaptability and improvement capacity of
N. tangutorum
shrubs in soil environments vary in differen
t habitats. There was a correlation between soil particle composition and nutrient content in
N. tangutorum
shrub mounds in sandy and saline-alkali lands. Increasing the content of fine soil particles can help improve soil nutrient conditions.
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