Results 61 to 70 of about 542 (161)
Soil Quality Assessment of Five Typical Forest Stands in the Dianchi Lake Basin based on MDS [PDF]
[Objective] Soil quality is a critical indicator of ecosystem health and sustainable land management. [Methods] Key soil quality indicators (e.g., organic matter, total nitrogen, available nitrogen, capillary porosity, and pH) were identified through ...
HUANG Shuai +4 more
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Conception and practice of resource utilization, energization and functionalization of coal mining subsidence areas with high groundwater level [PDF]
Underground coal mining often leads to surface subsidence and water accumulation, changes in the ecological environment, as well as in the spatial pattern of land and water resources, in high groundwater level mining areas.
Liang YUAN, Liangji XU
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Dianci bileiqi, 1973 焙烧是所有陶瓷工业部门一个最重要的工序,因为焙烧的好与坏对整个生产成果起着决定性的影响。如果在焙烧过程中产生废品,就会使以前投入的劳动和花费的物资付之东流,前功尽弃。瓷器焙烧时一系列复杂的过程,要求我们提出窑炉设备和生产工艺的研究课题。即要求我们准确地作出窑炉相应的车位范围的温度和窑炉气氛的切实规定。即使采用高度工业化的窑炉装备,对于生产废品的认识也是极为复杂的 ...
朱海仙
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Effects of different land use types on soil structure and hydraulic characteristics of reclaimed coal mines in semi-arid areas [PDF]
In order to explore the water characteristics of soil in reclaimed coal mines in semi-arid areas and make better use of the land in reclaimed mining areas, the basic physical properties, water characteristic curves, unsaturated water conductivity and ...
Duomei LI +5 more
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Zhejiang Daxue xuebao. Lixue ban, 2018 六溴环十二烷是一种使用量较高的溴代阻燃剂，具有持久性、生物富集性、半挥发性和高毒性，可在沉积物、水体、土壤和尘埃以及生物体内广泛检出.目前对土壤中六溴环十二烷的分布及浓度的研究主要集中在电子废弃物拆解地等典型高浓度地，而对工业区、养殖区的研究相对较少.实验采用UPLC-MS/MS法检测工业区、养殖区土壤中六溴环十二烷异构体的分布，旨在探明六溴环十二烷在不同类型环境土壤中的浓度及异构体分布差异，以促进对环境中六溴环十二烷的生态危害性的有效评价.结果显示，六溴环十二烷具有较高的检出率(82.00 ...
CHENGXin(程鑫) +6 more
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Mechanisms of carbon distribution and stability in the photosynthetic processes of plant-soil systems influenced by arbuscular mycorrhizal fungi during reclamation of mining areas [PDF]
Inoculation of Arbuscular Mycorrhizal Fungi (AMF) combined with vegetation restoration has become a key reclamation technology for ecological restoration in mining subsidence.
Dongdong WANG +3 more
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Shuitu Baochi Xuebao, 2002 通过对浙江哩铺铜矿废弃地复垦土壤的微生物特征研究表明 :与对照土壤相比 ,矿区复垦土壤微生物区系发生明显改变 ,微生物总数下降了 6 8.4 %～ 80 .3 2 %。微生物特征发生了显著的改变 ,微生物基础呼吸作用增强 ,但微生物生物量却显著降低 ,微生物生理生态参数 Cmic/Corg、q CO2 值明显升高。矿区土壤在重金属胁迫下 ,削弱了土壤中 C ...
龙健 黄昌勇 等
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野生动物学报, 2021 对比2010、2014年西安至成都客运专线建设前后卫星遥感数据，分析植被类型、面积、空间分布的变化情况，结合第四次大熊猫调查数据评估了西成客运专线对沿线大熊猫栖息地的影响。结果表明：陕西天华山国家级自然保护区大熊猫栖息地植被损毁面积为2604 hm2，占保护区总面积的010%，类型以灌丛为主。菜子坪走廊带大熊猫栖息地植被损毁面积为4325 hm2，占走廊带总面积的012%，类型以阔叶林为主。从空间分布来看，约80%损毁的植被位于连接隧道出入口和桥梁既有公路或废弃公路100 m范围内 ...
张洪峰 1 张威 2 胡罕 1 苏丽娜 1 万慧 3张希明 3 吴永朋 4 巩匆然 1 杨东东 1 刘艳 1 吴晓民 1
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Research on soil improvement and engineering application under mixed application of environmental materials in alpine mining areas [PDF]
To address the issues of inadequate topsoil structure, soil erosion, and low soil fertility in the reclamation of alpine mining areas. Taking Qinghai West Copper Mine as an example, this study investigates the impact of three materials—sheep manure(A ...
Jie REN +4 more
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Shuitu Baochi Xuebao, 2005 煤炭开采导致大量农田受损、地表沉陷、土地荒芜及水土流失,然而目前广泛采用的粉煤灰充填后表层覆土的复垦形式,虽然取得了一定效果,但矿区覆土来源的缺乏严重影响着复垦的进度。本研究利用粉煤灰分别与污泥、酒糟以4∶1的比例组配成新型复垦基质,进行了种植植物的试验研究。通过对基质主要化学性质变化的研究表明:有机质、速效养分含量经过灌溉和雨水的淋洗仍保持较高的水平,盐分含量也明显下降,重金属元素除Cd外均未超过土壤环境质量指标值二级标准,基质理化性状能够满足植物生长的要求。这不仅促进了废弃物的资源化利用 ...
王晓玲 冯永军 李芬 康惊涛
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