土地整理工程对土壤碳排放的影响

发布时间：2018-05-26 03:21

本文选题：土地整理 + 土壤　；参考：《土壤通报》2016年01期

【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。
[Abstract]:The research on carbon emission of land consolidation is of great significance to optimize land use pattern and cope with climate change. Taking the land consolidation projects in Julu County and Baoxiang County of Xingtai City Hebei Province as examples the changes of soil carbon emissions and their influencing factors in cornfield before and after land consolidation were analyzed by indirect sampling and random sampling. The results showed that after land consolidation, the soil carbon emissions of maize in Julu County and Baoxiang County increased, but they did not reach the statistically significant level, which indicated that in the period of maize growth, The development of land consolidation project has not affected the soil carbon emissions in the land consolidation area. (2) in the maize growing period, there are many factors that affect the change of soil carbon emission. Only the soil C / N ratio of land consolidation area in Julu County and the leaf area index of land consolidation area in Baixiang County changed significantly before and after land consolidation, but the change of other factors was not significant, although the magnitude and direction of the change were different.
【作者单位】：国土资源部土地整治中心;国土资源部土地整治重点实验室;国土资源部农用地质量与监控重点实验室;中国科学院遥感与数字地球研究所;石家庄工程技术学校;
【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
【分类号】：S513;S154.1

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