| 黄土高塬沟壑区退耕地土壤抗冲性及其与影响因素的关系 |
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| 引用本文： | 郭明明,王文龙,史倩华,陈同德,李建明,康宏亮,朱宝才,李艳富.黄土高塬沟壑区退耕地土壤抗冲性及其与影响因素的关系[J].农业工程学报,2016,32(10):129-136. |
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| 作者姓名： | 郭明明 王文龙 史倩华 陈同德 李建明 康宏亮 朱宝才 李艳富 |
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| 作者单位： | 1. 西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,杨凌,712100;2. 西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,杨凌712100;中国科学院水利部水土保持研究所,杨凌712100;3. 长江科学院水土保持研究所,武汉,430010;4. 西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,杨凌712100;山西农业大学林学院,太谷030801;5. 南京水利科学研究院,南京,210029 |
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| 基金项目： | 国家自然科学基金(41571275，41302199)；中国科学院西部行动计划(KZCX-XB3-13)；中国科学院知识创新工程重大项目(KZZD-EW-04-03) |
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| 摘 要： | 为了评价退耕地土壤抗冲性的变化,该文以黄土高塬沟壑区自然退耕农地为研究对象,通过径流小区冲刷法对不同覆盖度塬面退耕地(TAL,table-land abandoned land)和沟头退耕地(GAL,gully-head abandoned land)土壤抗冲性进行了研究。结果表明,1)与对照(Ⅰ)相比,TAL和GAL处理水稳性团聚体、根系密度和根系生物量均显著增加(P0.05),覆盖度大于0时,崩解速率显著减小44.87%~79.16%和33.79%~70.65%,有机质显著增加70.12%~222.70%和59.20%~194.88%,覆盖度最大时,土壤容重和渗透系数才显著减小和增大。2)TAL处理0覆盖度小区抗冲系数(AS,anti-scouribility)较对照无差异,其余覆盖度则显著增大2.31~7.57倍,GAL处理AS较对照显著增大0.99~7.12倍,覆盖度越大,根系提高土壤抗冲性能的效果越显著。3)TAL和GAL处理AS分别与容重、崩解速率、水稳性团聚体含量、渗透系数均呈极显著指数函数关系,与有机质含量、根系生物量及根系密度均呈极显著线性函数关系。水稳性团聚体是影响塬面和沟头退耕地土壤抗冲性的关键因子。结果可为研究区退耕还林还草工程生态功能评价及水土流失治理提供理论依据。
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| 关 键 词： | 土壤 土地利用 植被 理化性质 退耕地 根系 土壤抗冲性 黄土高塬沟壑区 |
| 收稿时间： | 2015/10/26 0:00:00 |
| 修稿时间： | 2016/3/18 0:00:00 |
Soil anti scouribility of abandoned land and its relationship with influencing factors in Loess Plateau Gully region |
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| Guo Mingming,Wang Wenlong,Shi Qianhu,Chen Tongde,Li Jianming,Kang Hongliang,Zhu Baocai and Li Yanfu.Soil anti scouribility of abandoned land and its relationship with influencing factors in Loess Plateau Gully region[J].Transactions of the Chinese Society of Agricultural Engineering,2016,32(10):129-136. |
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| Authors: | Guo Mingming Wang Wenlong Shi Qianhu Chen Tongde Li Jianming Kang Hongliang Zhu Baocai and Li Yanfu |
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| Institution: | State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China,State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China;Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China,State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China,State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China,Department of Soil and Water Conservation, Yangtze River Scientific Research Institute, Wuhan 430010, China,State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China,State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China;Forestry College, Shanxi Agricultural University, Taigu 030801, China and Nanjing Hudraulic Research Institute, Nanjing 210029, China |
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| Abstract: | |
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| Keywords: | soils land use vegetation physicochemical property abandoned land root soil anti-scouribility Loess Plateau Gully region |
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