Results 41 to 50 of about 1,092 (115)
Effects of Different Plant Configuration Patterns on Flow and Sediment Reduction of Artificial Slope [PDF]
, 2022 [Objective] The impacts of different plant patterns and configuration proportions on soil and water loss of an artificial slope were analyzed in order to provide reference for artificial slope vegetation restoration.
Gong Changchun +6 more
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Shuitu Baochi Xuebao, 2020 基于试验站不同坡地措施（坡耕地和坡改梯）2016年和2017年的逐日降水、产流产沙数据，研究不同坡地措施和雨强下产流产沙规律特征，定量揭示坡改梯和坡耕地对产流产沙的影响。结果表明：（1）7月平均雨强I、最大雨强I30及坡地产流量最大，8月最大雨强I60与坡地产沙量最大，表明坡地产流产沙高峰期与雨强高峰期一致。（2）春夏两季产流、产沙量与I、I30和I60相关性显著（超过95%置信度检验）。其中坡耕地产流产沙量与I、I30、I60的相关系数整体高于坡改梯。春夏季坡耕地产沙量分别是坡改梯的3.91，7 ...
曹媛 +5 more
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A New Method to Estimate the Cover Management Factor on the Loess Plateau in China [PDF]
[Objective] To investigate the combined effect of crop cover and crop management practices on preventing soil loss and improving the accuracy of C-factor estimation. [Methods] Six millet plots with different treatments, i.
LI Qinglan +4 more
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Soil Erosion and Spatio-temporal Variations in Huangshui River Basin Based on MODIS and Landsat Data [PDF]
, 2022 [Objective] The spatio-temporal distribution and variation characteristics of soil erosion in the Huangshui River basin in the upstream region of the Yellow River were analyzed in order to provide basic data and a basis for decision-making in relation to
Ding Yuanyuan +7 more
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Shuitu Baochi Xuebao, 2003 利用137Cs示踪技术,对长江上游重点水土流失区(金沙江下游及毕节地区、嘉陵江中下游地区、嘉陵江上游陕南陇南地区和三峡库区)坡耕地土壤流失速率进行了初步研究。结果表明,研究区土壤类型、坡度等因子对坡耕地土壤流失速率的影响较大,陕南区砾质土、三峡库区黄壤坡耕地的土壤流失速率相对较小,34°砾质土坡耕地,多年平均土壤流失率为985t/(km2·a),31°黄壤坡耕地为2059t/(km2·a);嘉陵江中下游地区和三峡库区紫色土、陕南区黄褐土、陇南区黄绵土和金沙江燥红土坡耕地土壤流失速率较高,一般在2000 ...
WANG Yukuan +2 more
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Sustainable agriculture: a case study of contour hedgerows in Zigui County, Hubei Province, China. [PDF]
, 2004 Tang Chi Wai.Thesis (M.Phil.)--Chinese University of Hong Kong, 2004.Includes bibliographical references (leaves 104-121) and index.Abstracts in English and Chinese.Abstract --- p.i摘要 --- p.iiiAcknowledgements --- p.vTable of Contents --- p.viiList ...
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川中丘陵区坡耕地侵蚀空间分布的WEPP模型和137Cs法研究
Shuitu Baochi Xuebao, 2007 当前核素示踪技术和侵蚀产沙模型联合应用于侵蚀空间分异规律研究甚少且主要集中在流域尺度上。本研究利用WEPP模型和137Cs核素示踪技术估算了川中丘陵区简阳县贾家村附近两块坡耕地的侵蚀速率,进而对两种方法估算的侵蚀速率在坡面上的空间分布规律进行了分析。研究表明用137Cs核素示踪法测算的两块坡耕地的侵蚀速率随坡长增加而呈波动变化特征,用WEPP模型估算的坡耕地和坡耕地的土壤侵蚀速率随坡长增加而增大 ...
郑进军, 张信宝, 贺秀斌
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Shuitu Baochi Xuebao, 2017 为揭示不同耕作措施对喀斯特地区坡耕地产流产沙的影响，采用独立设计土仓、室内人工模拟降雨的方法，通过设定一定雨强下研究不同耕作措施对西南岩溶区裸坡耕地径流与土壤流失特征。结果表明：雨强为63 mm/h，坡度小于10°时，翻耕措施能够加快地下孔隙的产流时间，而免耕能够滞缓其产流，翻耕的产沙量为免耕的66%；当坡度大于10°时，翻耕措施能够延缓地下孔隙的产流时间，而免耕则加速其产流，翻耕的产沙量分别为免耕的16%和6%。雨强为100 mm/h，坡度小于10°时，随着坡度的增大 ...
方荣杰, 朱晓锋, 韩
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Shuitu Baochi Xuebao, 2022 为探明黄壤坡耕地不同耕作措施下径流及可溶性有机碳(dissolved organic carbon,DOC)迁移途径与流失特征。以顺坡垄作、平作和横坡垄作措施下玉米种植坡耕地为研究对象,采用野外径流小区监测与室内分析相结合的方式,探讨自然降雨条件下坡耕地地表径流、壤中流及其DOC流失特征。结果表明:(1)种植玉米坡耕地径流量及DOC通量均受雨量等级影响显著,随雨量等级增大而增大,且玉米成熟期流失量均最大。(2)地表径流、0-20 cm壤中流和20-40 cm壤中流分别占总径流量的78.98%,9.05%,
安龙龙 +4 more
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Shuitu Baochi Xuebao, 2019 探索短历时强降雨对典型喀斯特坡耕地侵蚀产沙的影响，为喀斯特区坡耕地应对极端天气的水土流失防治提供理论依据。研究采用人工室内模拟降雨试验的方法，对喀斯特坡耕地侵蚀产沙特征在短历时强降雨作用下的影响因素开展研究。结果表明：（1）短历时强降雨导致喀斯特坡耕地地表输沙模数和产沙量随降雨强度的增大而增大，而地下输沙模数和产沙量与降雨强度无明显变化规律，坡耕地土壤侵蚀以地表为主。地表产沙临界雨强为30~50 mm/h。（2）坡度增大时地表产沙比重大于地下产沙比重，地表土壤侵蚀以地表为主 ...
任青青 +6 more
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