Jiang Yongqing,Wang zhanli,Hu Guangrong,et al.Distribution Features of Shallow Gully[J].Research of Soil and Water Conservation,1999,6(02):182-185.
瓦背状浅沟分布特征分析
- Title:
- Distribution Features of Shallow Gully
- Keywords:
- shallow gully; hill slope processes; soil erosion
- 摘要:
- 利用航空影像分析黄土丘陵沟壑区周屯沟小流域（面积33.6km2）瓦背状浅沟分布规律。浅沟主要发育在坡耕地上。流域内，浅沟分布区占坡面面积的31.3%，集中分布，平均频数7.2条/100m横坡面，密度为4～9条/100m的浅沟坡面占78%。相关分析表明，浅沟频数与浅沟的长度、浅沟坡面的总坡度显著相关。浅沟的平均长度64.7m，30～110m长的浅沟占91%，浅沟坡面总平均坡度数23°，13～32°的占95%。瓦背状浅沟实质上是坡耕地上一种产沙量较高的稳定地貌形态。
- Abstract:
- The distribution of shallow gully of Zhondunguo watershed in the loess hilly and gully regions were showed using the results from W-B aerial photograph interpretation.The shallow gully covers 31.3% of total areas of hillslope in the watershed.It is average frequency (density)7.2/100 mcross section of hillslope,the frequency range 4～9/100 maccounts for 78%.The total average degree of shallow gully hillside is 23°;range 12～32° is 95%.It is average length 67.4 m,range 30～110 m is 91%.In fact,tile-roofed shape shallow gully is a more stable geographical feature which can yield a higher silt.Interrelation analysis reveals a significant relationship between shallow gully density and total hillslope degree or shallow gully length.
参考文献/References:
1 朱显谟.黄土区土壤侵蚀的分类.土壤学报, 1956, 4(2)
2 唐克丽等.杏子河流域坡耕地的水土流失及其防治.水土保持通报, 1983, 5(15)
3 唐克丽等.土壤侵蚀及其防治.黄土高原杏子河流域自然资源与水土保持, 西安:陕西科学技术出版社, 1986
4 陈永宗.黄河中游黄土丘陵地区坡地的侵蚀发育.地理集刊, 1964, 10
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备注/Memo
收稿日期:1999-4-15
基金项目:陕西省自然科学基金