Shuitu Baochi Xuebao, 2016 为阐明准东地区土壤风蚀现状及影响因子，通过实地采样，结合气象、土地利用数据、DEM、遥感影像，从气候因子、地形因子、土壤因子以及植被盖度4个方面进行分析，利用GIS平台结合WEQ经验模型对各因子叠加计算的土壤风蚀状况进行分级，并对各侵蚀等级进行评价分析。结果表明：气候、土壤及植被盖度共同影响该区域的土壤风蚀状况。受各因子的影响，准东地区风蚀分级状况比较明显，侵蚀强度由南向北呈增强趋势，主要表现为重度侵蚀，占研究区面积的43.02%。该区域平均侵蚀模数4 470.64 t/(km2·a)，风蚀量达9 ...
吴芳芳, 曹月娥, 卢, 张婷婷
doaj
Shuitu Baochi Xuebao, 2004 定量分析评价水蚀风蚀交错带土壤侵蚀的坡向差异对于土壤侵蚀防治具有重要意义。通过对黄土高原水蚀风蚀交错带六道沟流域一个典型峁坡不同坡向及坡位土壤剖面中137Cs含量的分析研究,表明研究区内梁峁地形的坡向侵蚀差异明显,各坡向平均侵蚀速率大小依次是北坡>东坡>南坡>西坡,南北坡侵蚀差异与黄土丘陵区其它区域相反,分析认为,这与该区域水蚀、风蚀叠加的特殊侵蚀外营力有关,并根据南北坡侵蚀速率的差值估算出该区域风蚀所占比例至少大于18%;峁坡各坡向不同坡位侵蚀差异明显,坡面下部侵蚀最严重,坡面上部和中部次之 ...
李勉 李占斌 刘普灵 崔灵周 李雅琦
doaj
Shuitu Baochi Xuebao[目的] 研究冻融作用对东北黑土区坡面土壤侵蚀的影响,可加深对黑土坡面侵蚀过程机理的认识,并为区域侵蚀治理提供重要科学依据。[方法] 以东北黑土区单一侵蚀营力驱动的融雪、风力和降雨侵蚀为对照,通过设计冻融-融雪、冻融-风力、冻融-降雨双侵蚀营力叠加的模拟试验,分析冻融作用对坡面融雪、风力和降雨侵蚀的影响。试验处理包括1次冻融作用、2个融雪径流量(1,2 L/min)、1个风速(12 m/s),1个降雨强度(100 mm/h)和1个坡度(3°)。[结果] (1)冻融作用显著增加坡面融雪、风力和降雨侵蚀量 ...
赵娅君 +7 more
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