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土地整理工程对土壤碳排放的影响 被引量:8

The Effect of Land Consolidation Projects on Soil Carbon Emissions
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摘要 土地整理的碳排放研究对优化土地利用格局、应对气候变化具有重要意义。以河北省邢台市巨鹿县、柏乡县土地整理项目为例,通过间接采样和随机采样方法,分析了土地整理前后玉米地土壤碳排放及其影响因子的变化情况。结果表明:(1)土地整理后,巨鹿县和柏乡县整理区玉米生长旺盛时期的土壤碳排放量增加,但均没有达到统计上的显著性水平,这说明在玉米生长旺盛时期,土地整理项目的开展暂未影响土地整理区土壤的碳排放。(2)在玉米生长旺盛时期,影响土壤碳排放变化的多个因子中,只有巨鹿县土地整理区的土壤碳氮比和柏乡县土地整理区的叶面积指数在土地整理前后发生了显著变化,其他因子虽然变化的大小和方向存在不一致,但是变化量均不显著。 The researches on land consolidation in agricultural lands are important for optimizing land use patterns and combating climate changes. This study used the land consolidation projects in Julu and Baixiang Counties in Xingtai City of Hebei Province as study areas, and analyzed the changes of soil carbon emissions and its affecting factors before and after land consolidation based on indirect sampling and random sampling methods. The results showed that:1) through land consolidation, soil carbon emissions increased at the peak growing season of maize in land consolidation areas of Julu and Baixiang Counties. However, the increase in soil carbon emission was not statistically significant. This indicated that the land consolidation projects at the peak growing season of maize in Julu and Baixiang Counties did not fundamentally affected soil carbon emissions at land consolidation areas. 2) Among the factors affecting soil carbon emissions at the peak growing season of maize, only the soil carbon nitrogen ratio at land consolidation area of Julu County and leaf area index at land consolidation area of Baixiang County showed significantly changes before and after land consolidation. Although other factors had different change size and direction, the change was not statistically significant.
出处 《土壤通报》 CAS CSCD 北大核心 2016年第1期36-41,共6页 Chinese Journal of Soil Science
基金 国家自然科学基金项目(41401201) 国土资源部公益性行业科研专项(201311127)资助
关键词 土地整理 土壤 碳排放 玉米 Land consolidation Soil Carbon emission Maize
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