ISWC OpenIR  > 水保所知识产出(1956---)
坡面侵蚀过程中泥沙有机碳流失特征分析
任瑞雪1; 张风宝1,2; 杨明义1,2; 王永吉1; 王子豪1; 邓鑫欣1
2017
Source Publication水土保持学报
Volume31Issue:6Pages:15-19
Abstract

以野外布设的径流小区为研究对象,采用模拟降雨方法研究随机条件下降雨侵蚀过程中泥沙有机碳
含量及流失过程的动态变化规律。结果表明:(1)降雨侵蚀过程中泥沙有机碳含量随降雨的进行逐渐降低
并趋于平稳,与坡面土壤有机碳含量相比显著增高(p<0.01),有机碳在泥沙中明显富集,富集比最大值达
1.780,泥沙中有机碳含量及富集比随侵蚀速率的增加明显减小且趋于稳定;(2)泥沙有机碳流失速率随降
雨的进行先波动增大,达到最大值后又波动减小,最后逐渐趋于准稳定,整个过程呈单峰分布;(3)泥沙有
机碳流失强度与土壤侵蚀强度呈显著性线性正相关(p<0.01),说明土壤侵蚀量决定侵蚀过程中有机碳流
失量,准确获取土壤侵蚀强度是估算坡面有机碳流失量的基础。
关键词:坡面侵蚀;模拟降雨;土壤有机碳流失.

Other Abstract

In this study,simulated rainfall was conducted to mainly investigate and analyze organic carbon
content of sediment and its dynamic change during the rainfall on the outdoor runoff plot under random
conditions.The sediment organic carbon content,which was significantly higher than that of the soil organic
carbon(p<0.01),decreased gradually during the early stage of the rainfall,then tended to be stable in the
later stage.The organic carbon was obviously enriched in sediment,and the maximum of enrichment ratio
was 1.780.The content and enrichment ratio of organic carbon in sediment decreased obviously with the
increasing of erosion rate,and tended to be stable.The loss process of sediment organic carbon showed a
unimodal distribution during the rainfall,which increased first with the rainfall,then decreased after
reaching the maximum value,and finally tended to quasi stable.There was a significant linear relationship
between soil organic carbon loss and soil erosion amount(p<0.01),indicating that soil erosion amount
determined the organic carbon loss during the erosion process,so accurate estimation of soil erosion intensity
was the basis of estimating organic carbon loss on the slope.

Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8451
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室
2.中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
任瑞雪,张风宝,杨明义,等. 坡面侵蚀过程中泥沙有机碳流失特征分析[J]. 水土保持学报,2017,31(6):15-19.
APA 任瑞雪,张风宝,杨明义,王永吉,王子豪,&邓鑫欣.(2017).坡面侵蚀过程中泥沙有机碳流失特征分析.水土保持学报,31(6),15-19.
MLA 任瑞雪,et al."坡面侵蚀过程中泥沙有机碳流失特征分析".水土保持学报 31.6(2017):15-19.
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