| 不同补播配置模式对宁夏荒漠草原土壤有机碳和全氮储量的影响 |
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| 引用本文： | 季波,何建龙,杜建明,王占军,谢应忠,吴旭东,俞鸿千,蒋齐.不同补播配置模式对宁夏荒漠草原土壤有机碳和全氮储量的影响[J].中国草地学报,2021(3). |
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| 作者姓名： | 季波 何建龙 杜建明 王占军 谢应忠 吴旭东 俞鸿千 蒋齐 |
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| 作者单位： | 宁夏大学农学院;宁夏农林科学院荒漠化治理研究所;宁夏防沙治沙与水土保持重点实验室 |
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| 基金项目： | 宁夏农林科学院科技平台建设提升项目"宁夏荒漠草原长期定位观测"(NKYP-19-06);自治区一二三产业融合发展项目“退化草地生态修复及管理技术集成研究与示范”(YES-2016-10-002)。 |
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| 摘 要： | 以不同人工补播配置模式(禾本科牧草混播、豆科牧草混播、禾本科+豆科牧草混播、禾本科牧草+豆科牧草+小灌木混播及封育未补播)为研究对象,研究补播不同牧草配置模式对宁夏荒漠草原土壤有机碳和全氮储量的影响。结果表明:在0~10cm和10~20cm土层间,禾本科牧草混播模式土壤有机碳和全氮含量最高;在20~40cm土层,封育未补播处理土壤有机碳和全氮含量最高(P<0.05)。在0~40cm土层,土壤有机碳储量表现为:禾本科牧草混播>禾本科+豆科混播>封育未补播>豆科牧草混播>禾本科+豆科+小灌木混播。土壤全氮储量表现为:封育未补播>禾本科+豆科混播>禾本科牧草混播>禾本科+豆科+小灌木混播>豆科牧草混播;短期内0~20cm土层是4种补播配置模式土壤有机碳和全氮的主要蓄积层,20~40cm土层是封育未补播土壤有机碳和全氮的主要蓄积层。因此,应加强长期监测,并在兼顾生态恢复和产业发展的同时,选择适宜的人工恢复措施。
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| 关 键 词： | 荒漠草原 补播模式 封育 土壤有机碳 全氮 |
Effects of Different Reseeding Modes on Soil Organic Carbon and Nitrogen Reserves in Ningxia Desert Steppe |
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| JI Bo,HE Jian-long,DU Jian-ming,WANG Zhan-jun,XIE Ying-zhong,WU Xu-dong,YU Hong-qian,JIANG Qi.Effects of Different Reseeding Modes on Soil Organic Carbon and Nitrogen Reserves in Ningxia Desert Steppe[J].Chinese Journal of Grassland,2021(3). |
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| Authors: | JI Bo HE Jian-long DU Jian-ming WANG Zhan-jun XIE Ying-zhong WU Xu-dong YU Hong-qian JIANG Qi |
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| Institution: | (School of Agriculture,Ningxia University,Yinchuan 750021,China;Institute of Desert Manage,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan 750002,China;Key Laboratory of Desertification Control and Soil and Water Conservation of Ningxia,Yinchuan 750002,China) |
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| Abstract: | The effects of different reseeding modes(gramineous herbage mixed sowing,leguminous herbage mixed sowing,legume-grass mixed sowing,legume-grass-shrub mixed sowing,and fencing)on soil organic carbon and nitrogen reserves were studied in Ningxia desert steppe.The results showed that in the 0~10cm and 10~20cm soil layers,the contents of soil organic carbon and total nitrogen were the highest in the gramineous herbage mixed sowing mode.In the 20~40 cm soil layer,the contents of soil organic carbon and total nitrogen were the highest in the fencing mode(P<0.05).The soil organic carbon reserve in the 0~40 cm layer was as follows:gramineous herbage mixed sowing>legume-grass mixed sowing>fencing>leguminous herbage mixed sowing>legume-grass-shrub mixed sowing.The soil total nitrogen reserve in the 0~40 cm layer was as follows:fencing>legume-grass mixed sowing>gramineous herbage mixed sowing>legume-grass-shrub mixed sowing>leguminous herbage mixed sowing.In the short term,the 0~20 cm soil layer was the main accumulation layer of soil organic carbon and total nitrogen in the four reseeding modes,and the 20~40cm soil layer was the main accumulation layer in the fencing mode.Therefore,it is necessary to strengthen long-term monitoring and select appropriate artificial restoration strategy while taking into account ecological restoration and industrial development. |
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| Keywords: | Desert steppe Reseeding mode Fencing Soil organic carbon Total nitrogen |
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