1. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
2. 中国科学院水利部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
3. 重庆水利电力职业技术学院,重庆,402160
纸质出版:2014
移动端阅览
刘佳鑫, 刘普灵, 刘栋, 等. 黄土丘陵区典型峁坡土壤侵蚀空间分异特征[J]. 水土保持通报, 2014,33(4):1-4.
LIU Jia-xin, LIU Pu-ling, LIU Dong, et al. Spatial Differentiation of Soil Erosion on Typical Loess Hill Slope in Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 1-4.
刘佳鑫, 刘普灵, 刘栋, 等. 黄土丘陵区典型峁坡土壤侵蚀空间分异特征[J]. 水土保持通报, 2014,33(4):1-4. DOI: 10.13961/j.cnki.stbctb.2014.04.015.
LIU Jia-xin, LIU Pu-ling, LIU Dong, et al. Spatial Differentiation of Soil Erosion on Typical Loess Hill Slope in Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 1-4. DOI: 10.13961/j.cnki.stbctb.2014.04.015.
选择黄土高原丘陵沟壑区典型峁坡
采用
137
Cs示踪技术
通过对不同坡向和坡位土样
137
Cs含量的测定
分析了峁坡
137
Cs空间分布特征及土壤侵蚀的空间分异。结果表明
不同坡向峁坡侵蚀差异明显
各坡向平均侵蚀速率大小依次为:北坡 > 西南坡 > 东北坡 > 西坡 > 西北坡 > 南坡 > 东南坡 > 东坡
各坡向侵蚀强度均表现为强度侵蚀;峁坡各坡向不同坡位的侵蚀差异也非常明显
坡下部侵蚀量最大
坡面中上部次之。侵蚀速率顺坡呈波动变化趋势
且侵蚀强度表现为中度、强度以及极强度侵蚀
以强度侵蚀为主。
The spatial distribution of 137Cs and the spatial differentiation of soil erosion on typical loess hill slope in the loess hilly and gully region was analyzed by using 137Cs tracer technique to determine the content of 137Cs in different slope aspect positions. The results showed that there were obvious differences of erosion between different slope aspects. The order of the average erosion rate was as follows: north slope > southwest slope > northeast slope > west slope > northwest slope > south slope > southeast slope > east slope and all the slopes were characterized by strong erosion. Moreover
the erosion rates in different slope positions of the same slope aspect showed significant differences
the erosion amount in lower part of the slope was the maximum and less in the upper slope. Overall
the erosion rate showed a trend of fluctuations along the slope
and the erosion intensity was mainly characterized by medium
strong and extremely strong and most of them was strong.
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137
Cs法原理及其常用模型[J]. 中国水土保持,2004(7):16-18.
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137
Cs[J]. Soil Science Soc. Am. Proc.[J].1974,38(1):137-139.
刘志强,杨明义,刘普灵,等.确定
137
Cs背景值所需的采样点数与采样面积[J].核农学报, 2009,23(3):482-486.
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137
Cs法测算农耕地土壤侵蚀量的影响[J].科学通报, 1993,38(22):2072-2076.
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137
Cs测定法研究不同坡面土壤侵蚀空间的分布特征[J].核农学报, 1999, 13(6):368-372.
陈浩,方海燕,蔡国强,等.黄土丘陵沟壑区沟谷侵蚀演化的坡向差异:以晋西王家沟小流域为例[J].资源科学,2006,28(5):176-184.
华绍祖.黄河中游实验小流域的土壤侵蚀及水土保持效益[C]//国际土壤学术讨论会论文集.北京:1982.
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庄舜尧,吴春艳,杨浩,等.红壤侵蚀沉积点
137
Cs垂直剖面分布特征[J].水土保持学报, 2002,16(2):65-67.
陈永宗,景可,蔡强国.黄土高原现代侵蚀与治理[M].北京:科学出版社,1988.
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