| 宁夏盐池县荒漠草原区不同群落优势植物叶片-土壤生态化学计量特征 |
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| 引用本文： | 聂明鹤,沈艳,陆颖,王科鑫,张小菊.宁夏盐池县荒漠草原区不同群落优势植物叶片-土壤生态化学计量特征[J].草地学报,2021,29(1):131-140. |
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| 作者姓名： | 聂明鹤 沈艳 陆颖 王科鑫 张小菊 |
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| 作者单位： | 1. 宁夏大学农学院, 宁夏 银川 750021;2. 西北土地退化与生态恢复省部共建国家重点实验室培育基地, 宁夏 银川 750021 |
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| 基金项目： | 宁夏高等学校一流学科建设(草学学科)项目;宁夏科技创新领军人才培养项目;国家重点研发计划项目;宁夏重点研发计划项目 |
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| 摘 要： | 为分析宁夏荒漠草原区不同群落植物与土壤的碳（Carbon，C）、氮（Nitrogen，N）、磷（Phosphorus，P）含量及其比值特征，本研究以宁夏盐池县荒漠草原区8种群落的植被及土壤为对象，研究了不同群落优势植物与土壤生态化学计量特征及其相互关系。结果表明：与全球平均水平相比，研究区不同群落优势植物叶片与土壤的C，N，P含量均较低；不同群落优势植物叶片与土壤的生态化学计量特征不同；苦豆子（Sophora alopecuroides）群落、短花针茅（Stipa breviflora）群落、赖草（Leymus secalinus）群落与白刺（Nitraria tangutorum）群落的限制植物生长的元素主要是P，甘草（Glycrrhiza uralensis）群落、中亚白草（Pennisetum centrasiaticum）群落和油蒿（Artemisia ordosica）群落植物的生长限制元素主要是N，N与P元素共同限制牛枝子（Lespedeza potaninii）群落的植物生长；土壤总C含量与植物总C含量具有极显著的正相关关系（P<0.01），与土壤全N和全P含量呈显著正相关（P<0.05）；植物总C含量与土壤全P含量呈显著正相关（P<0.05）。
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| 关 键 词： | 宁夏盐池县 荒漠草原 植物群落 优势植物 土壤 生态化学计量 |
| 收稿时间： | 2020-07-01 |
Ecostoichiometric Characteristics of Dominant Plant Leaves-soil Ecology in Different Communities of Desert Steppe in Yanchi County,Ningxia |
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| NIE Ming-he,SHEN Yan,LU Ying,WANG Ke-xin,ZHANG Xiao-ju.Ecostoichiometric Characteristics of Dominant Plant Leaves-soil Ecology in Different Communities of Desert Steppe in Yanchi County,Ningxia[J].Acta Agrestia Sinica,2021,29(1):131-140. |
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| Authors: | NIE Ming-he SHEN Yan LU Ying WANG Ke-xin ZHANG Xiao-ju |
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| Institution: | 1. Agriculture College in Ningxia University, Yinchuan, Ningxia 750021, China;2. Key Laboratory of Restoration and Rehabilitation of Degraded Ecosystem in Northwestern China, Ningxia University, Yinchuan, Ningxia 750021, China |
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| Abstract: | In order to analyze the carbon (C),nitrogen (N) and phosphorus (P) contents and their stoichiometric characteristics of different plant communities and soil in Ningxia desert steppe region,eight plant communities in the desert steppe region of Yanchi County were studied,the purpose is to clarify the nutrient cycling and limitation of dominant plant and soil. The main results were as follows:Compared with the global average level,the contents of C,N and P in the dominant plant leaves and soil of different communities in the study area were lower,and the ecostoichiometric characteristics of the dominant plants in different communities were different;P was the main limiting factor of plant growth in the Sophora alopecuroides community,Stipa breviflora community,Leymus secalinus community and Nitraria tangutorum community;N was the main limiting factor for the growth of plant leaves in the Glycyrrhiza uralensis community,Pennisetum centrasiaticum community and Artemisia ordosica community;N and P were the limiting factors in the Lespedeza potaninii community;soil C content was significantly positively correlated with plant C content (P<0.01),positively correlated with soil N and P contents (P<0.05);and plant C contents was significantly positively correlated with soil P contents (P<0.05). |
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| Keywords: | Yanchi County Ningxia Desert steppe Plant community Dominant plant Soil Ecological stoichiometry |
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