ISWC OpenIR  > 水保所知识产出(1956---)
钟科元1; 郑粉莉1,2
Source Publication自然资源学报

蚀力时空分异特征及其影响因素。结果表明:1)松花江流域多年平均降雨侵蚀力为1 717.6
MJ·mm·hm -2 ·h -1 ·a -1 ,呈波动变化趋势,存在以15.2 a为主周期和4.7 a为小周期的周期性变化

Other Abstract

Soil erosion is one of the most serious global ecological environmental issues and
rainfall erosivity is an important parameter influencing soil loss. This paper analyzed spatial
and temporal variation characteristics of rainfall erosivity in different morphologic regions and
sub-river basins within the Songhua River Basin from 1960 to 2014 based on Mann-Kendall,
Wavelet Analysis and ArcGIS interpolation method. The results showed that the average
rainfall erosivity in the Songhua River Basin was 1 717.6 MJ·mm·hm -2 ·h -1 ·a -1 and the trend
of change was not significant whereas significant abrupt changes showed in 1982 and 1998.
The main period was 15.2 a while the minor period was 4.7 a. The spatial variation of rainfall
erosivity was generally consistent with the spatial variation of precipitation. Rainfall erosivity
decreased from southeast to northwest, which was consistent with the influenced region of the
southeast monsoon. The trend of rainfall erosivity varied in different sub- regions in the
Songhua River Basin. Rainfall erosivity showed increasing trend in northwestern part of the
basin and a deceasing trend in north eastern and south western part of the central plains region.
There was a strong correlation between the rainfall erosivity and precipitation, which
sequenced as eastern mountainous hilly region, central plains region and western mountain
areas. In eastern mountainous hilly region, the rainfall erosivity significantly correlated with
latitude and longitude, whereas in central plains region and western mountain areas there were
no significant correlations between the rainfall erosivity and latitude, longitude as well as
altitude. Rainfall erosivity varied in different sub-river basins within the Songhua River Basin.
The rainfall erosivity decreased from the second Songhua River Basin, the midstream area of
the Songhua River to the Nenjiang River Basin, which was consistent with the distribution of
precipitation. In all sub- river basins within the Songhua River Basin, the rainfall erosivity
showed a non-significant downward trend during the past 55 years.

Keyword降雨侵蚀力 土壤侵蚀 松花江流域
Document Type期刊论文
Corresponding Author郑粉莉
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,陕西 杨凌 712100
2.中国科学院水利部水土保持研究所,陕西 杨凌 712100
Corresponding Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
钟科元,郑粉莉. 1960—2014年松花江流域降雨侵蚀力时空变化研究[J]. 自然资源学报,2017,32(2):178-291.
APA 钟科元,&郑粉莉.(2017).1960—2014年松花江流域降雨侵蚀力时空变化研究.自然资源学报,32(2),178-291.
MLA 钟科元,et al."1960—2014年松花江流域降雨侵蚀力时空变化研究".自然资源学报 32.2(2017):178-291.
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