黄土丘陵区纸坊沟小流域土壤有机碳储量研究
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国家自然科学基金重点项目“黄土丘陵区土壤侵蚀对植被恢复过程的干扰与植物的抗侵蚀特性研究”(41030532;41171226);西北农林科技大学“优秀人才科研专项(QN2011049)


Soil Organic Carbon Storage in Zhifanggou Watershed of Loess Hilly Region
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    摘要:

    通过野外调查和室内分析,研究了黄土丘陵区纸坊沟小流域不同土地利用方式下土壤有机碳的剖面变化特征及土壤有机碳储量。结果表明,该流域各层土壤的有机碳含量为中等变异,土壤有机碳含量随土层深度的增加而减少。0-60 cm土层有机碳储量为4.73×104t,天然草地和林地的储量较高,占总储量的80%。不同土地利用方式下,流域内的土壤有机碳含量差异显著,表现为:天然草地>灌木林地>乔木林地>川坝地>梯田>坡耕地>撂荒地>果园。

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    Through the field survey and laboratory analysis,soil profiles with various land uses were characterized regarding soil organic carbon variations and storages in the Zhifanggou watershed in the loess hilly region. The results show that the soil organic carbon contents in different soil layers varied moderately,increasing with soil depth,in the study area. Approximately 4.73 ×104t soil organic carbon was stored in 0-60 cm soils in the watershed,which was mainly distributed in natural grassland and forest,accounting for 80% of the total amount. Under different types of land use,the soil organic carbon content in the Zhifanggou watershed differed significantly,in a descending order as:natural grassland > shrub > forest > dammed valley > terrace farmland > slope land > abandoned land > orchard.

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侯晓瑞,薛志婧,程曼,安韶山.黄土丘陵区纸坊沟小流域土壤有机碳储量研究[J].水土保持通报,2012,(2):21-25

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  • 收稿日期:2011-08-03
  • 最后修改日期:2011-10-09
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  • 在线发布日期: 2014-11-25
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