湘西山区农田耕层土壤有机碳储量及分布特性——以洪江市为例

[目的]研究湘西山区农田耕层土壤有机碳储量及分布特征,为有效地促进山区农田资源的科学利用与保护,减缓农业生产造成的有机碳损失和温室气体排放提供依据。[方法]借助土壤类型图、地貌类型图、土地利用现状图和数字高程模型,结合野外土壤样品采集、室内分析和GIS空间分析方法,估算湘西典型山区地形条件下的洪江市农田耕层土壤有机碳密度和储量,分析该市农田碳密度分布特征。[结果]洪江市农田耕层土壤平均有机碳密度为40.48 t/ha,有机碳储量约1171831.62 t。不同地貌条件的耕层土壤有机碳密度表现为:中山(44.59 t/ha)〉河口三角洲(44.22 t/ha)〉低山(42.88 t/ha)〉冲积...

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Published in南方农业学报 Vol. 46; no. 7; pp. 1200 - 1205
Main Author 张伟畅 周清 谢红霞 彭育桐 冯旖 吴婷华 张杨珠
Format Journal Article
LanguageChinese
Published 湖南农业大学资源环境学院,长沙410128%湖南农业大学资源环境学院,长沙,410128 2015
土壤肥料资源高效利用国家工程实验室,长沙410128
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ISSN2095-1191
DOI10.3969/j:issn.2095-1191.2015.7.1200

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Abstract [目的]研究湘西山区农田耕层土壤有机碳储量及分布特征,为有效地促进山区农田资源的科学利用与保护,减缓农业生产造成的有机碳损失和温室气体排放提供依据。[方法]借助土壤类型图、地貌类型图、土地利用现状图和数字高程模型,结合野外土壤样品采集、室内分析和GIS空间分析方法,估算湘西典型山区地形条件下的洪江市农田耕层土壤有机碳密度和储量,分析该市农田碳密度分布特征。[结果]洪江市农田耕层土壤平均有机碳密度为40.48 t/ha,有机碳储量约1171831.62 t。不同地貌条件的耕层土壤有机碳密度表现为:中山(44.59 t/ha)〉河口三角洲(44.22 t/ha)〉低山(42.88 t/ha)〉冲积平原(36.20 t/ha)〉台地(34.98 t/ha)〉丘陵(32.73 t/ha)。不同土壤类型的有机碳密度依次为:红壤(47.92 t/ha)〉黄壤(45.27 t/ha)〉水稻土(40.10 t/ha)〉紫色土(38.69 t/ha)〉潮土(37.62 t/ha);水稻土亚类有机碳密度为38.05~43.32 t/ha,以淹育型水稻土最高,漂白型最低。[结论]洪江市农田耕层土壤有机碳密度高于全国平均水平,其空间分布受地势、土壤类型及不同区域气候因素的影响,总体表现为东南部地区较高,中西部地区较低。
AbstractList S153.6; [目的]研究湘西山区农田耕层土壤有机碳储量及分布特征,为有效地促进山区农田资源的科学利用与保护,减缓农业生产造成的有机碳损失和温室气体排放提供依据.[方法]借助土壤类型图、地貌类型图、土地利用现状图和数字高程模型,结合野外土壤样品采集、室内分析和GIS空间分析方法,估算湘西典型山区地形条件下的洪江市农田耕层土壤有机碳密度和储量,分析该市农田碳密度分布特征.[结果]洪江市农田耕层土壤平均有机碳密度为40.48 t/ha,有机碳储量约1171831.62t.不同地貌条件的耕层土壤有机碳密度表现为:中山(44.59t/ha)>河口三角洲(44.22 t/ha)>低山(42.88 t/ha)>冲积平原(36.20t/ha)>台地(34.98 t/ha)>丘陵(32.73 t/ha).不同土壤类型的有机碳密度依次为:红壤(47.92 t/ha)>黄壤(45.27 t/ha)>水稻土(40.10 t/ha)>紫色土(38.69t/ha)>潮土(37.62 t/ha);水稻土亚类有机碳密度为38.05~43.32 t/ha,以淹育型水稻土最高,漂白型最低.[结论]洪江市农田耕层土壤有机碳密度高于全国平均水平,其空间分布受地势、土壤类型及不同区域气候因素的影响,总体表现为东南部地区较高,中西部地区较低.
[目的]研究湘西山区农田耕层土壤有机碳储量及分布特征,为有效地促进山区农田资源的科学利用与保护,减缓农业生产造成的有机碳损失和温室气体排放提供依据。[方法]借助土壤类型图、地貌类型图、土地利用现状图和数字高程模型,结合野外土壤样品采集、室内分析和GIS空间分析方法,估算湘西典型山区地形条件下的洪江市农田耕层土壤有机碳密度和储量,分析该市农田碳密度分布特征。[结果]洪江市农田耕层土壤平均有机碳密度为40.48 t/ha,有机碳储量约1171831.62 t。不同地貌条件的耕层土壤有机碳密度表现为:中山(44.59 t/ha)〉河口三角洲(44.22 t/ha)〉低山(42.88 t/ha)〉冲积平原(36.20 t/ha)〉台地(34.98 t/ha)〉丘陵(32.73 t/ha)。不同土壤类型的有机碳密度依次为:红壤(47.92 t/ha)〉黄壤(45.27 t/ha)〉水稻土(40.10 t/ha)〉紫色土(38.69 t/ha)〉潮土(37.62 t/ha);水稻土亚类有机碳密度为38.05~43.32 t/ha,以淹育型水稻土最高,漂白型最低。[结论]洪江市农田耕层土壤有机碳密度高于全国平均水平,其空间分布受地势、土壤类型及不同区域气候因素的影响,总体表现为东南部地区较高,中西部地区较低。
Author 张伟畅 周清 谢红霞 彭育桐 冯旖 吴婷华 张杨珠
AuthorAffiliation 土壤肥料资源高效利用国家工程实验室,长沙410128 湖南农业大学资源环境学院,长沙410128
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Author_FL ZHANG Wei-chang
FENG Yi
WU Ting-hua
ZHOU Qing
PENG Yu-tong
ZHANG Yang-zhu
XIE Hong-xia
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DocumentTitleAlternate Storage and distribution of organic carbon in plow layer of cultivated land in mountainous areas of western Hunan——A case study of Hongjiang city
DocumentTitle_FL Storage and distribution of organic carbon in plow layer of cultivated land in mountainous areas of western Hunan case study of Hongjiang city
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Issue 7
Keywords carbon storage
carbon density
耕层
碳密度
碳储量
plow layer
soil carbon
湘西山区
cultivated land
mountain area of western Hunan
土壤碳
农田
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Notes 45-1381/S
cultivated land; plow layer; soil carbon; carbon density; carbon storage; mountain area of western Hunan
ZHANG Wei-chang, ZHOU Qing, XIE Hong-xia, PENG Yu-tong, FENG Yi, WU Ting-hua, ZHANG Yang-zhu(1National Engineering Laboratory of Soil Fertilizer Resources Efficient Utilization, Changsha 410128, China; 2College of Resources and Environment, Hunan Agricuhural University, Changsha 410128, China)
[Objective ]The storage and distribution of organic carbon in plow layer of cultivated land in mountainous areas were investigated to protect and utilize effectively and scientifically cultivated land of mountainous areas, in order to provide references for mitigate loss of organic carbon and emission of greenhouse gas which were caused by unreasonable agricultural production. [ Method ] By applying soil type map, geomorphic type map, land-use map and DEM, the organic carbon density and storage in plow layer of cultivated land of Hongjiang city were estimated, which was typical mountain- ous terrain of western
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PublicationTitle 南方农业学报
PublicationTitleAlternate Journal of Southern Agriculture
PublicationTitle_FL Journal of Southern Agriculture
PublicationYear 2015
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SubjectTerms 农田
土壤碳
湘西山区
碳储量
碳密度
耕层
Title 湘西山区农田耕层土壤有机碳储量及分布特性——以洪江市为例
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