地形因子对土壤理化性质和植物种类的影响
地形因子对土壤理化性质和植物种类的影响
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SUN, Liying , LI Qingya , Liang, PEI , WU, Hui and CHEN Lajiao
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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【目的】研究影响土壤理化性质和植物种类的主要地形因子。【方法】以南方红壤丘陵坡地果园水土保持示范区为研究区域，采用五点采样法取土，利用样方法开展植被调查，利用ArcGIS确定各采样点地形因子，对土壤理化性质（土壤总氮（TN）、总磷（TP）、总钾（TK）、有机质（TOC）、土壤含水率）和植物种数随地形因子（坡度、破向、坡位）进行相关性分析。【结果】不同坡度等级下土壤含水率表现为5°～10°> 10°～15°> 15°～25°> 0°～5°，在0°～5o坡度等级下土壤含水率最低为（18.6%）。土壤TN、TP、TK、TOC量随坡度和坡向变化无显著差异。土壤TN、TK和土壤含水率在不同坡位处无显著差异，TP和TOC量随坡位的下降而增加。研究区内共有植物183种，植物种类数随坡度、坡向及坡位差异显著...
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地形因子对土壤理化性质和植物种类的影响
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TN_cdi_wanfang_journals_ggps202007015
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202007015
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ISSN
1672-3317
DOI
10.13522/j.cnki.ggps.2020119
