Results 31 to 40 of about 2,017 (148)
Effects of Interplanting Medicinal Herbs on Runoff, Sediment and Nitrogen and Phosphorus Losses in Young Oil Tea Plantation on Red Soil Sloping Field [PDF]
[Objective] To investigate the effects and applicability of different intercropping patterns of medicinal herbs on water, soil, and nutrient losses in young oil tea gardens on red soil slopes. [Methods] Runoff plot experiments were carried out in Jiangxi
DUAN Jian +4 more
core +1 more source
Shuitu Baochi Xuebao, 2017 通过对山西省长治市白马小流域的1个标准小区和4个植物措施小区近5 a（2006—2010年）的降雨和径流泥沙观测，研究太行山土石山区的降雨特征以及不同类型降雨对典型植物措施小区径流泥沙的影响。结果表明：（1）太行山土石山区侵蚀性降雨主要集中于5—8月份，7—8月份侵蚀性降雨次数占侵蚀性降雨总次数的54.55%，侵蚀性降雨量占侵蚀性降雨总量的61.19%，故该时期是防治水土流失的关键时期；（2）径流量R与降雨量P、最大30 min降雨强度I30、降雨量和最大30 min降雨强度的乘积PI30呈正相关且在0.
高 +5 more
doaj
Model Construction of InSAR-based Rainfall Thresholds for Landslide Hazards in Yanhe Basin, Chinese Loess Plateau [PDF]
[Objective] Empirical rainfall thresholds have geographical limitations, it is of great significance to carry out a rainfall threshold modeling study for landslide hazard on the Chinese Loess Plateau.
CHEN Manyu +5 more
core +1 more source
Research on risk early warning for rainfall-induced shallow landslides in Guangdong Province based on a dynamic slope instability model [PDF]
In light of the accuracy and model construction challenges in county-level meteorological risk early warning for geo-hazards, and considering the prominent characteristics that these geo-hazards mainly occur on the shallow surface of residual slopes, the
Pingxin WEI +5 more
core +1 more source
Shuitu Baochi Xuebao[目的] 为阐明不同降雨类型下各土地利用类型产流产沙规律,评估不同降雨类型下各土地利用类型的减流减沙效益。[方法] 基于黄土高原地区自然降雨条件下31个径流场连续2年(2015—2016年)的径流量和土壤流失量监测数据,探讨不同土地利用类型(农地、撂荒地、人工草地、自然草地、灌丛地、人工林地)的产流产沙特征,明确不同降雨类型下各土地利用类型的减流减沙效率。[结果] 年降雨尺度下撂荒地径流量与土壤流失量最大(30 mm, 86 t/hm2),人工林地最小(8 mm, 24 t/hm2 ...
李澳 +4 more
doaj
Shuitu Baochi Xuebao, 2011 通过室内模拟降雨研究降雨强度对含砾石土壤产沙及入渗的影响。结果表明:整个降雨过程中,60mm/h的降雨强度下,产沙率变化相对平稳,90mm/h和120mm/h的降雨强度下,土壤产沙率的变化均因为有细沟而产生波动,120mm/h的降雨强度下,细沟出现的时间较90mm/h的降雨强度提前了5～20min;降雨强度的增加导致土壤总产沙量也显著增加,当降雨强度从90mm/h增加到120mm/h时,总产沙量的增加量是降雨强度从60mm/h增加到90mm/h时总产沙量增加量的0.83～2.82倍;随着降雨强度的增加 ...
吴冰, 朱元骏, 邵明安
doaj
Study on rainfall threshold of different lithologic landslides in Bailong River Basin of Gansu Province [PDF]
The research results regarding the threshold values for slope disasters caused by rainfall are crucial for geological disaster prevention. In this study，landslides induced by long-term heavy rainfall occurred in five counties within the Gansu section of ...
Guan CHEN +6 more
core +1 more source
Shuitu Baochi Xuebao, 2002 降雨侵蚀力反映了降雨对土壤侵蚀影响的潜在能力 ,它是建立土壤水蚀预报模型的基础。为了进行无降雨过程资料地区的降雨侵蚀力计算 ,选取了密云 1993～ 1998年共 15 4次降雨过程资料和蒲洼 1992～ 1995年共 4 7次降雨过程资料 ,对 CREAMS模型中的次降雨侵蚀力公式进行了检验。检验结果发现 ,CREAMS模型次降雨侵蚀力公式计算结果在北京山区不同地区有较好的稳定性 ,密云和蒲洼模型计算结果的模型有效系数分别为 0 .80 4和 0 .6 90。因此在北京山区 ,当缺乏降雨过程资料时 ...
符素华 段淑怀 吴敬东 刘宝元
doaj
Shuitu Baochi Xuebao, 2021 为探究引起三峡库区农业小流域土壤侵蚀的主要次降雨因子，通过天然降雨观测资料，分析忠县石盘丘小流域2019年侵蚀性降雨年内分布特征和典型次降雨条件下A和B 2个集水区产沙过程的变化规律，采用相关性分析方法，揭示次降雨产沙的主要影响因素。结果表明：（1）全年119场降雨资料中，有19场为侵蚀性降雨。全年侵蚀性中雨共发生10次，是侵蚀性降雨中最常见的降雨类型。暴雨及以上降雨是造成研究区产沙量最大的降雨类型。（2）在典型中雨、大雨和暴雨产沙事件中，B集水区产沙量分别是A集水区的5.13，1.66，7.56倍 ...
崔璨 +5 more
doaj