| 荒漠-绿洲区土壤性质过渡特征 |
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| 引用本文： | 李昌盛,张志山,张金林,张秀风,徐冰鑫,石亚飞,霍建强.荒漠-绿洲区土壤性质过渡特征[J].中国沙漠,2022,42(4):209-218. |
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| 作者姓名： | 李昌盛 张志山 张金林 张秀风 徐冰鑫 石亚飞 霍建强 |
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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 沙坡头沙漠研究试验站，甘肃 兰州 730000;2.中国科学院大学，北京 100049;3.甘肃省植保植检站，甘肃 兰州 730020;4.兰州大学 草地农业科技学院，甘肃 兰州 730000;5.内蒙古巴丹吉林自然保护区雅布赖管理站，内蒙古 阿拉善盟 737300 |
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| 基金项目： | 国家重点研发计划项目(2017YFC0504301);国家自然科学基金项目(31971529) |
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| 摘 要： | 荒漠-绿洲区是干旱区地表景观格局变化最频繁的地区，深入研究荒漠-绿洲区不同景观格局土壤环境的差异对揭示干旱区生态系统过程至关重要。本研究通过采集石羊河流域荒漠、过渡带和绿洲土壤样品，综合运用多种分析方法，研究荒漠-绿洲区不同景观格局土壤理化属性的差异及其相互作用关系。结果表明：从荒漠、过渡带到绿洲景观，土壤质地和持水性能在不断好转，酸碱度和盐分状况变化不大，养分状况则表现为荒漠和过渡带具有近乎相同的有机碳和全氮含量，绿洲具有显著增加的有机碳、全氮和全磷含量。在不同深度上，荒漠景观土壤理化属性几乎没有变化；过渡带土壤质地由表层至深层不断改善，含水量逐层增大，全磷含量缓慢增加，C∶N和C∶P的值波动减小；绿洲景观土壤含水量由表层至深层显著增加，养分含量显著降低，C∶N和C∶P的值显著减小。总体而言，荒漠景观土壤理化属性的分异程度最小，绿洲景观分异程度最大，过渡带景观在土壤质地和含水量方面的分异程度较大，在土壤养分方面的分异程度较小。此外，过渡带景观土壤理化属性的自相关程度最高，且土壤质地是引起其他土壤理化属性分异的主要原因。
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| 关 键 词： | 荒漠-绿洲区 景观格局 土壤质地 含水量 土壤养分 |
| 收稿时间： | 2021-11-16 |
| 修稿时间： | 2021-12-13 |
Transition characteristics of soil properties in desert-oasis |
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| Changsheng Li,Zhishan Zhang,Jinlin Zhang,Xiufeng Zhang,Bingxin Xu,Yafei Shi,Jianqiang Huo.Transition characteristics of soil properties in desert-oasis[J].Journal of Desert Research,2022,42(4):209-218. |
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| Authors: | Changsheng Li Zhishan Zhang Jinlin Zhang Xiufeng Zhang Bingxin Xu Yafei Shi Jianqiang Huo |
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| Institution: | 1.Shapotou Desert Research and Experimental Station，Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China;2.University of Chinese Academy of Sciences，Beijing 100049，China;3.Plant Protection and Quarantine Station of Gansu Province，Lanzhou 730000，China;4.College of Grassland Agricultural Science and Technology，Lanzhou University，Lanzhou 730000，China;5.Yabulai Management Station of Badan Jilin Nature Reserve，Alxa League 737300，Inner Mongolia，China |
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| Abstract: | Desert-oasis transition area has the most frequent landscape changes in arid area. It is very important to deeply understand the differences of soil environment under different landscapes in desert-oasis transition area in order to reveal the ecosystem processes in arid area. By collecting soil samples from different landscapes （i.e.， desert， transition zone and oasis） in Shiyang River Basin， and comprehensively using a variety of analysis methods， this study investigated the heterogeneity and their interactions of soil physical and chemical properties. The results demonstrated that soil texture and water holding capacity improved from desert， transition zone to oasis landscapes while the value of pH and salinity had little change. The landscapes of desert and transition zone had nearly the same organic carbon and total nitrogen contents， and the oasis landscapes had significantly increased organic carbon， total nitrogen， and total phosphorus contents. At different depths， the soil physical and chemical properties in desert landscape had little change. However， the soil texture in the transition zone landscape improved from surface to deep layer， the water content increased layer by layer， the total phosphorus content increased slowly， and the values of C∶N and C∶P decreased irregularly. From surface to deep layer， the soil water content in oasis landscape increased significantly， the nutrients decreased significantly， and the values of C∶N and C∶P decreased significantly. In general， desert landscape had the smallest heterogeneity degree of soil physical and chemical properties， while oasis landscape had the largest one. As for the transition zone landscape， it had larger heterogeneity in soil texture and water content， and had smaller heterogeneity in soil nutrients. In addition， the transition zone landscape obtained the highest autocorrelation degree of soil physical and chemical properties， and soil texture was the main reason for the heterogeneity of other soil physical and chemical properties. |
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| Keywords: | desert-oasis transition area landscape pattern soil texture moisture content soil nutrient |
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