| 海南热带橡胶园土壤易氧化有机碳空间变异特征研究 |
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| 引用本文： | 张俊华,丁维新,孟磊.海南热带橡胶园土壤易氧化有机碳空间变异特征研究[J].生态环境,2010,19(11):2563-2567. |
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| 作者姓名： | 张俊华 丁维新 孟磊 |
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| 作者单位： | [1]热带作物种质资源保护与开发利用教育部重点实验室,海南海口570228 [2]海南大学农学院,海南儋州571737 [3]中国科学院南京土壤研究所／土壤与农业可持续发展国家重点实验室,江苏南京210008 |
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| 基金项目： | 海南省自然科学基金，海南省教育厅课题，海南大学"211工程大学"建设专项资金资助 |
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| 摘 要： | 为了解热带橡胶园土壤活性有机碳状况,采集了海南全岛13个不同胶园土壤,用高锰酸钾氧化-比色法测定了土壤易氧化有机碳质量分数,分析了其影响因素。结果表明,海南橡胶园土壤易氧化有机碳质量分数平均为2.70 g.kg-1（以C计）,变化在0.92~6.82 g.kg-1之间,变幅达到641%。易氧化有机碳质量分数与土壤有机质、全磷和全氮显著正相关,同时受成土母质的强烈影响,玄武岩发育的土壤最有利于易氧化有机碳累积,砂页岩和花岗岩次之,而变质岩和浅海沉积物形成的土壤易氧化有机碳质量分数较低。土壤易氧化有机碳质量分数也受气候强烈影响,随湿度降低而下降。
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| 关 键 词： | 易氧化有机碳 胶园土壤 养分 母质 气候类型 |
Spatial variability of soil labile organic carbon in the tropical rubber plantations of Hainan province, China |
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| ZHANG Junhua,DING Weixin,MENG Lei.Spatial variability of soil labile organic carbon in the tropical rubber plantations of Hainan province, China[J].Ecology and Environmnet,2010,19(11):2563-2567. |
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| Authors: | ZHANG Junhua DING Weixin MENG Lei |
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| Institution: | 1,2＊ 1.Key Laboratory of Protection and Development Utilization of Tropical Crop Germplasm Resources, Ministry of Education of China,Haikou,Hainan 570228; 2.Collage of Agriculture,Hainan University,Danzhou,Hainan 571737,China; 3.State Key Laboratory of Soil and Sustainable Agriculture//Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China |
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| Abstract: | To evaluate the spatial variation of soil labile organic carbon（LOC） in the tropical rubber plantations,soil samples were collected around Hainan Island and LOC was determined using the potassium permanganate oxidation method.The content of soil LOC averaged 2.70 g·kg-1 soil,with a range varying from 0.92 to 6.82 g·kg-1 soil.The variation coefficient of the mean amounted to 641%,indicating that there was a large variability of soil LOC in rubber plantations around Hainan.Soil LOC was significantly correlated with soil organic matter,total phosphorus and total nitrogen,but not with total potassium contents in soil.The parent materials significantly affected LOC contents in soils.Soil derived from basalt had the highest LOC,followed by sandstone,shale and granite,whereas the lowest was observed for metamorphic rock and neritic sediments.Soil LOC content was also impacted by climate conditions,and roughly decreased with the reduction of humidity. |
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| Keywords: | labile organic carbon rubber plantation soil parent material climatic type |
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