库布齐沙漠典型灌木群落土壤生态化学计量特征

doi:10.13292/j.1000-4890.202604.032

生态学杂志 ›› 2026, Vol. 45 ›› Issue (4): 1226-1235.doi: 10.13292/j.1000-4890.202604.032

库布齐沙漠典型灌木群落土壤生态化学计量特征

王浩伊¹,王海勇³,邢燕红²,辛智鸣^1*,李星¹,张硕¹,敖亚宁¹,魏岩峻¹

（¹中国林业科学研究院沙漠林业实验中心/内蒙古磴口荒漠生态系统定位观测研究站，内蒙古磴口 015200； ²乌海市林业和草原局，内蒙古乌海 016000； ³乌海市林业草原有害生物防治检疫和野生动植物保护中心，内蒙古乌海 016000）

出版日期:2026-04-10 发布日期:2026-04-10

Soil ecological stoichiometry characteristics of typical shrub communities in the Hobq Desert.

WANG Haoy¹, WANG Haiyong³, XING Yanhong², XIN Zhiming^1*, LI Xing¹, ZHANG Shuo¹, AO Yaning¹, WEI Yanjun¹

(¹Experimental Center of Desert Forestry, Chinese Academy Forestry/Dengkou Desert Ecosystem Research Station of Inner Mongolia, Dengkou 015200, Inner Mongolia, China; ²Wuhai Forestry Bureau, Wuhai 016000, Inner Mongolia, China; ³Wuhai Forestry and Grassland Pest Control and Quarantine Center for Wildlife and Plant Protection, Wuhai 016000, Inner Mongolia, China).

Online:2026-04-10 Published:2026-04-10

摘要/Abstract

摘要： 阐明库布齐沙漠不同类型灌丛土壤质量状况，明确灌丛生长养分限制因子，对库布齐沙漠灌丛管护具有重要意义。本研究在库布齐沙漠选择驼绒藜、霸王、四合木群落设置样地，采集0～10、10～30、30～50 cm土壤样品，分析不同灌丛各土层有机质（OM）、全氮（TN）、全磷（TP）、全钾（TK）含量及其化学计量比的垂直分布特征，并探讨各指标间的相关关系以及植物生长养分限制因子。结果表明：3种典型灌丛0～50 cm土壤OM、TN、TP、TK含量差异显著(P<0.05)。其中，驼绒藜灌丛土壤OM、TN、TP、TK含量随着土壤深度的增加呈减少趋势，但霸王、四合木灌丛土壤各全量养分含量随着土层增加变化规律不一致。驼绒藜灌丛土壤OM、TN、TP、N∶P、N∶K、P∶K之间均呈显著正相关（P<0.05），而TK与OM、TN、TP、N∶P、N∶K、P∶K呈显著负相关(P<0.05)，说明灌丛土壤在一定程度上体现了各养分元素间的内在耦合与平衡机制。霸王灌丛土壤TN、TK、N∶K之间呈显著正相关(P<0.05)，TP、TK与N∶P、N∶K呈显著负相关(P<0.05)。四合木灌丛土壤OM、TN与TK、N∶P、N∶K呈显著正相关(P<0.05)，TP与P∶K呈极显著负相关(P<0.001)。3种灌丛生长受N、K限制的影响。本研究为库布齐沙漠灌丛管理与养护提供理论依据。

关键词: 库布齐沙漠, 养分含量, 化学计量比, 灌丛, 土层深度

Abstract: Elucidating the soil quality of different types of shrubland in the Hobq Desert and identifying the nutrient limitation status of shrub growth are of great significance for shrubland management and conservation. We collected soil samples from 0-10, 10-30, and 30-50 cm layers in shrub communities of Ceratoides latens, Tetraena mongolica, and Sarcozygium xanthoxylon, and analyzed soil organic matter (OM), total nitrogen (TN), total phosphorus (TP), and total potassium (TK) contents as well as their stoichiometric ratios. We further explored the correlations among the indicators and nutrition limitation factors for plant growth. The results showed that there were significant differences (P<0.05) in the contents of OM, TN, TP, and TK in the 0-50 cm soil layers among the three shrublands. Specifically, the contents of OM, TN, TP, and TK in the soil of the C. latens community showed a decreasing trend with increasing soil depth. However, the variations in total soil nutrient contents in the S. xanthoxylon and T. mongolica communities with increasing soil layers were inconsistent. There was a significant positive correlation among OM, TN, TP, N∶P, N∶K, and P∶K in the soil of the C. latens community (P<0.05), while TK was significantly negatively correlated with OM, TN, TP, N∶P, N∶K, and P∶K (P<0.05). Those results indicated that soil of shrubland reflects to some extent the inherent coupling and balance mechanism among various nutrient elements. There was a significant positive correlation between TN, TK, and N∶K in the soil of the S. xanthoxylon community (P<0.05), and a significant negative correlation between TP and TK and N∶P and N∶K (P<0.05). There were significant positive correlations between OM and TN, TK, N∶P, and N∶K (P<0.05), but negative correlation between TP and P∶K in the soil of the T. mongolica community (P<0.001). The growth of three shrubs was limited by N and K. Our results provide a theoretical basis for the management and maintenance of shrublands in the Hobq Desert.

Key words: Hobq Desert, nutrient content, stoichiometric ratio, shrub, soil depth

王浩伊, 王海勇, 邢燕红, 辛智鸣, 李星, 张硕, 敖亚宁, 魏岩峻. 库布齐沙漠典型灌木群落土壤生态化学计量特征[J]. 生态学杂志, 2026, 45(4): 1226-1235.

WANG Haoy, WANG Haiyong, XING Yanhong, XIN Zhiming, LI Xing, ZHANG Shuo, AO Yaning, WEI Yanjun. Soil ecological stoichiometry characteristics of typical shrub communities in the Hobq Desert.[J]. Chinese Journal of Ecology, 2026, 45(4): 1226-1235.

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库布齐沙漠典型灌木群落土壤生态化学计量特征

Soil ecological stoichiometry characteristics of typical shrub communities in the Hobq Desert.

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