| 川中丘陵地区近25年来农田土壤有机碳密度变化——以四川省盐亭县为例 |
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| 引用本文： | 罗怀良,王慧萍,陈浩.川中丘陵地区近25年来农田土壤有机碳密度变化——以四川省盐亭县为例[J].山地学报,2010,28(2). |
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| 作者姓名： | 罗怀良 王慧萍 陈浩 |
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| 作者单位： | 1. 西南土地资源评价与监测教育部重点实验室,四川师范大学,四川师范大学地理与资源科学学院,四川,成都,610101
2. 成都理工大学地球科学学院,四川,成都,610059 |
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| 基金项目： | 四川省教育厅自然科学项目 |
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| 摘 要： | 根据盐亭县第二次全国土壤普查23个土壤剖面的采样记录,2007年采集了这23个土壤剖面样品,并分析测定其土壤有机碳含量,对比发现,盐亭县近25年来土壤平均有机碳密度上升2.70 t/hm2,上升幅度为5.65%,该县农田土壤具有微弱的碳汇效应.近25年来该县土壤有机碳密度变化复杂,不同土壤类型之间的变化差异较大.其中,水稻土、黄壤和紫色土有机碳密度均有不同程度的上升,而冲积土的有机碳密度则明显下降.而就土地利用方式而言,水田土壤的有机碳密度呈明显上升趋势(上升幅度15.38%),而旱地土壤有机碳密度则基本上保持稳定少变.该区今后应主要通过改良耕作措施,推广生态农业技术,增加土壤有机物质归还量;加强生态环境建设,搞好水土保持;灌溉水利工程建设进一步稳定和扩大水田面积等措施,以达到稳定和提高农田土壤有机碳储量的目的.
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| 关 键 词： | 川中丘陵地区 农田土壤 土壤有机碳密度 盐亭县 |
Change of Farmland Soil Organic Carbon Density in Hilly Area of Central Sichuan Basin in the last 25 yesrs——A Case Study of Yanting County, Sichuan Province |
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| LUO Huailiang,WANG Huiping,CHEN Hao.Change of Farmland Soil Organic Carbon Density in Hilly Area of Central Sichuan Basin in the last 25 yesrs——A Case Study of Yanting County, Sichuan Province[J].Journal of Mountain Research,2010,28(2). |
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| Authors: | LUO Huailiang WANG Huiping CHEN Hao |
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| Institution: | LUO Huailiang1,WANG Huiping1,CHEN Hao2(1. Key Laboratory of L, Resources Evaluation , Monitoring in Southwest(Sichuan Normal University),Ministry of Education,College of Geography , Resources Science,Sichuan Normal University,Chengdu 610101,Sichuan,China,2.Geoscience Institute of Chengdu University of Technology,Chengdu 610059,China) |
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| Abstract: | Taking Yanting County,Sichuan Province as a case,change of farmland soil organic carbon density in Hilly Area of Central Sichuan Basin is estimated and analyzed in last 25 years (1982~2007). By referencing the data and sampling location of 23 soil profiles in the second national soil surveys in Yanting County,Sichuan Province conducted in 1980s,we re-sampled these 23 soil profiles in the county in 2007. The contents of soil organic carbon were determined and soil organic carbon densities were calculated and... |
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| Keywords: | hilly area of central Sichuan Basin farmland soil soil organic carbon density Yanting County |
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