| 干热河谷冲沟沟岸葛藤不同覆被状况及土壤性质差异分析 |
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| 引用本文： | 校亮,熊东红,张宝军,张素,吴汉,杨丹.干热河谷冲沟沟岸葛藤不同覆被状况及土壤性质差异分析[J].生态学报,2018,38(14):5047-5055. |
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| 作者姓名： | 校亮 熊东红 张宝军 张素 吴汉 杨丹 |
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| 作者单位： | 中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;中国科学院大学资源与环境学院; |
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| 基金项目： | 国家重点研发计划课题（2017YFC0505102）；国家重点基础研究发展计划（973）项目（2015CB452704）；国家自然科学基金项目（41571277）；中国科学院“西部之光”重点项目（Y4R2060060） |
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| 摘 要： | 沟岸是干热河谷冲沟系统中土壤生态环境最为恶劣的地带,其水热矛盾突出、土层浅薄、土壤贫瘠。探讨葛藤覆被对沟岸土壤性质的影响,可为沟岸土壤改良与植被恢复奠定基础。以元谋干热河谷区葛藤覆被的冲沟沟岸为研究对象,选取裸露地块作为对照(CK),根据藤本生物量设置4个处理(T1:309.70 g/m~2鲜被物,T2、T3、T4:594.34、1103.43、1693.27 g/m~2枯落物),对比研究了葛藤不同覆被状况对沟岸土壤性质的影响。结果表明:沟岸土壤性质受葛藤覆被类型(鲜/枯)及生物量共同影响。(1)较裸露沟岸(11.05%),枯藤覆被有益于保持其下土壤水分(13.30%—18.90%),鲜藤覆被下土壤水分则明显降低(7.36%);较裸露沟岸,鲜、枯藤覆被均有助于增加其下土壤毛管孔隙度。(2)较裸露沟岸,鲜藤覆被下沟岸土壤有机质、铵态氮、硝态氮、有效磷、速效钾含量大都呈现出不同程度的降低,枯藤覆被沟岸上述土壤养分含量则整体增加,且大都呈现出随枯藤覆被量增加而增加的规律。(3)较裸露沟岸(3.24 nmol/g),鲜、枯藤覆被沟岸土壤总PLFA(总磷脂脂肪酸量Phospholipids fatty acid)量明显提升,T1—T4处理土壤的总PLFA量分别为裸露沟岸的10.5、2.6、2.6倍和6.5倍。研究成果对于干热河谷冲沟系统退化土壤的改良及植被恢复具有重要的指导意义。
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| 关 键 词： | 葛藤覆被 冲沟沟岸 土壤性质 干热河谷 |
| 收稿时间： | 2017/5/13 0:00:00 |
| 修稿时间： | 2018/2/7 0:00:00 |
Analysis of soil properties in gully banks under different coverage of Kudzu in a dry-hot valley region |
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| XIAO Liang,XIONG Donghong,ZHANG Baojun,ZHANG Su,WU Han and YANG Dan.Analysis of soil properties in gully banks under different coverage of Kudzu in a dry-hot valley region[J].Acta Ecologica Sinica,2018,38(14):5047-5055. |
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| Authors: | XIAO Liang XIONG Donghong ZHANG Baojun ZHANG Su WU Han and YANG Dan |
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| Institution: | Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences, Chengdu 610041, China;Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences, Chengdu 610041, China;Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China,Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences, Chengdu 610041, China;Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences, Chengdu 610041, China;Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences, Chengdu 610041, China;Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;University of Chinese Academy of Sciences, Beijing 100049, China and Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences, Chengdu 610041, China;Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | |
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| Keywords: | Kudzu covers gully bank soil properties dry-hot valley |
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