Results 21 to 30 of about 289 (146)
Shuitu Baochi Xuebao, 2002 露天矿排土场的严重水土流失 ,导致周边土壤盐渍化和草场退化 ,是草原露天矿区环境治理的关键和重点。因随机排土 ,大部分排土场的表层土壤为深层绿色泥岩土 ,不适于植物生长 ,治理难度很大。风蚀作用是限制排土场植被恢复的主要因素 ,而一定密度的人工灌丛可以减轻排土场平台的风蚀强度 ,形成地表凋落物覆盖层 ,改良土壤 ,加速植被的恢复。沙棘是草原露天矿排土场理想的复垦植物 ,可以在短时期内形成郁闭的人工沙棘灌丛 ,土壤培肥和水土保持效果显著 ,并明显减缓坡下草场盐渍化程度。因此 ,以沙棘为主的人工灌丛 ...
台培东 李文杰 等
doaj +2 more sources
Optimization of the remaining ditch mode and parameters for end-wall covered of open pit coal mine with partition and inner dumping [PDF]
The development of large open-pit coal fields with high safety and efficiency is the trend of open-pit coal development. With partitioned mining as the main development mode, the large open-pit coal field has the significant advantages of safety and ...
Hengrong WANG +5 more
core +1 more source
Synergistic benefit analysis of carbon sink capacity and biodiversity function of artificial ecosystems in mining reclamation sites [PDF]
Land reclamation in mining areas is an inevitable measure to accelerate the restoration of biodiversity, promote the transformation and development of mining areas, and realize the transformation of carbon sources into carbon sinks. There are few studies
Cong MEN +5 more
core +1 more source
Short term production planning of open-pit coal mine based on UAV data [PDF]
In order to improve the efficiency of making short-term (daily and weekly) production plan, fast analysis of the completion of equipment plan and the effect of visual design and visual expression, based on the UAV image data, the paper puts forward the ...
Ensan FU +3 more
core +1 more source
Shuitu Baochi Xuebao, 2020 选择晋陕蒙接壤区永利煤矿排土场沙打旺草地、紫花苜蓿草地、沙棘林地和原地貌草地土壤水分为对象，研究其蒸散、剖面分布、时间变化等特征，以期揭示土体重构及不同复垦植被模式对土壤水分及其时间稳定性影响。结果表明：排土场3种人工植被条件下土壤平均含水量同原地貌草地相比提高了50.7%~62.3%，另外，沙打旺复垦草地土壤含水量显著低于苜蓿复垦草地和沙棘复垦灌木林地（均降低了7.2%）。沙打旺和苜蓿会导致深层（120—260，120—220 cm）土壤水分亏缺，但有利于20—80 cm的土壤水分的保持 ...
张燕乐, 甄庆, 张兴昌, 马炳召
doaj
Shuitu Baochi Xuebao, 2022 土壤水分是制约黄土高原地区生态恢复与重建的关键性因子,探究土壤水分的增加和储存是排土场边坡土地复垦和生态系统重建的重要内容。通过塑造水平阶(阶宽1 m,阶长2 m,每个水平阶间距1 m)、鱼鳞坑(长60 cm,宽40 cm,深30 cm,每个鱼鳞坑横排间距1 m,行间距1 m)工程措施,并以未塑造地形作为对照组进行人工模拟降雨试验,选择山西平朔安太堡露天煤矿南排土场边坡为研究区,在模拟降雨期间对土壤剖面不同土层深度(0—10,10—20,20—40 cm)的水分进行动态监测 ...
王悦 +4 more
doaj
, 2007 揭示了土工布提高加筋土强度的力学机理.假设:平行、分层布置的土工布在垂直布面方向是连续分布的;土工布是薄膜,不影响物料的力学特性:土工布、物料、加筋土的变形是相同的:加筋土的应力状态是土工布与物料二者应力状态的叠加;加筋土的破坏只发生在物料中.提出了土工布单元,给出它与加筋土单元、物料单元间变形受力关系.结论:土工布承担了拉力,削弱了物料分担的荷载,提高了加筋土的强度;据此 ...
于永江, 姚再兴, 王来贵
core
Systematic nature positive markets
Conservation Biology, Volume 38, Issue 3, June 2024.Abstract Environmental markets are a rapidly emerging tool to mobilize private funding to incentivize landholders to undertake more sustainable land management. How units of biodiversity in these markets are measured and subsequently traded creates key challenges ecologically and economically because it determines whether environmental markets can ...
Alex Bush +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2003 采用萌发试验法研究了安太堡露天矿排土场土壤种子库特征,结果表明:排土场土壤中有活性种子存在,且以1年生植物为主,可为植被恢复提供物质基础;随着复垦时间的延长,土壤微环境改善,种子库的组成种类增加,数量增多,幼苗生长加快;复垦10年的沙棘、草地、刺槐林地,土壤种子库组成种类较新排土区明显增多,且优势种因复垦模式不同而异;未复垦的空旷区有利于种子传播,但土壤微环境差,不利于种子萌发,幼苗生长较差.
王改玲, 白中科, 郝明德
doaj +2 more sources
Theory and technical system of coal ecological open-pit mining and its application [PDF]
Large-scale open-pit coal mining will cause ecological problems such as land excavation and occupation, groundwater drainage, soil erosion, vegetation destruction, air pollution, and regional landscape damage. The selection of existing open-pit coal mine
Quansheng LI
core +1 more source