| 荒漠河岸林区3种典型植物群落下土壤碳氮含量特征 |
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| 引用本文： | 陈雨晴,席海洋,程文举,赵欣悦.荒漠河岸林区3种典型植物群落下土壤碳氮含量特征[J].中国沙漠,2023,43(1):150-159. |
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| 作者姓名： | 陈雨晴 席海洋 程文举 赵欣悦 |
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| 作者单位： | 1.中国科学院西北生态环境资源研究院，甘肃 兰州 730000;2.中国科学院大学，北京 100049 |
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| 基金项目： | 中国科学院“西部交叉团队”重点实验室专项(xbzg-zdsys-202103);内蒙古自治区科技重大专项(zdzx2018057) |
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| 摘 要： | 以黑河下游荒漠河岸林区3种典型植物(苦豆子(Sophora alopecuroides)、胡杨(Populus euphratica)、柽柳(Tamarix ramosissima))群落下的土壤为研究对象，分析了0～280 cm土层土壤碳氮含量特征，运用Pearson相关分析、通径分析方法揭示了土壤碳氮含量与其他理化性质的关系。结果表明：(1)苦豆子、胡杨、柽柳群落下的土壤平均碳含量分别为16.35、20.23、17.23 mg·g-1，平均氮含量分别为0.47、0.69、0.61 mg·g-1，植被类型导致的土壤碳氮含量的差异主要表现在0～10 cm表层。(2)荒漠河岸林区0～160 cm土壤碳储量柽柳(444.64 t·hm-2)>胡杨(398.60 t·hm-2)>苦豆子(368.95 t·hm-2)，土壤氮储量柽柳(12.46 t·hm-2)>胡杨(11.88 t·hm-2)>苦豆子(10.60 t·hm-2
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| 关 键 词： | 总碳 总氮 荒漠河岸带 土壤理化性质 通径分析 |
| 收稿时间： | 2022-08-04 |
| 修稿时间： | 2022-09-21 |
Characteristics of soil carbon and nitrogen change in three typical plant communities in desert riparian forest area |
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| Yuqing Chen,Haiyang Xi,Wenju Cheng,Xinyue Zhao.Characteristics of soil carbon and nitrogen change in three typical plant communities in desert riparian forest area[J].Journal of Desert Research,2023,43(1):150-159. |
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| Authors: | Yuqing Chen Haiyang Xi Wenju Cheng Xinyue Zhao |
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| Institution: | 1.Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China;2.University of Chinese Academy of Sciences，Beijing 100049，China |
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| Abstract: | Taking the soils under the 3 vegetation types of desert riparian forest in the lower reaches of the Heihe River as the research object， the variation characteristics of soil carbon and nitrogen from 0-280 cm were analyzed by means of field sampling and laboratory analysis. Pearson correlation analysis and path analysis methods were used to reveal the relationship between soil carbon， nitrogen and physicochemical properties. The results showed that： （1） The average soil carbon content under the planting covers of Sophora alopecuroides， Populus euphratica， Tamarix ramosissima was 16.35， 20.23， 17.23 mg·g-1， respectively， and the average nitrogen content was 0.47， 0.69， 0.61 mg·g-1， respectively. The difference in soil carbon and nitrogen content due to vegetation type was mainly manifested in the surface layer of 0-10 cm. （2） Soil carbon storage in the desert riparian forest area of 0-160 cm was shown as Tamarix ramosissima （444.64 t·hm-2）>Populus euphratica （398.60 t·hm-2）>Sophora alopecuroides （368.95 t·hm-2）， and soil nitrogen storage was Tamarix ramosissima （12.46 t·hm-2）>Populus euphratica （11.88 t·hm-2）>Sophora alopecuroides （10.60 t·hm-2）. （3） The correlation analysis between soil carbon and nitrogen content and physical and chemical properties showed that organic matter， total phosphorus， available phosphorus， alkaline nitrogen， available potassium， conductivity and carbon and nitrogen content were positively correlated （P<0.01）， and pH， bulk weight and carbon and nitrogen content were negatively correlated （P<0.01）. The results of this study can provide a reference for the study of the spatial pattern of carbon and nitrogen in the desert riparian zone in arid areas. |
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| Keywords: | total carbon total nitrogen desert riparian forests soil physicochemical properties path analysis |
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