Results 41 to 50 of about 184 (98)

山西省大同市平旺乡农业保险经营模式的选择 [PDF]

open access: yes, 2006
通过调查了解山西大同平旺乡的经济发展水平、特征,概括阐述三大类(六小类)农业保险经营模式及各自的优势和劣势。各种模式中,在近期,因地制宜选择农村合作性质的经营模式 ...
李心印
core  

Spatial-temporal heterogeneity of landscape ecological risk in Yushenfu Mining Area from 1995 to 2021 [PDF]

open access: yes
As a strong human disturbance, coal mining has affected the ecosystem service function and economic value on mining area. However, there is a lack on the comparing for the long-term spatial scale evolution of landscape ecological risk after mining ...
Benyan NING   +4 more
core   +1 more source

有机无机不同用量配施对煤矿复垦土壤氮素利用及矿质氮含量的影响

open access: yesShuitu Baochi Xuebao, 2019
采煤塌陷新复垦土壤有效氮含量低而有机无机培肥过程中氮有效性变化尚不明确,依托定位培肥试验基地(山西省孝义市水峪煤矿采煤塌陷复垦土壤),设置8个不同处理包括3个有机无机不同用量配施处理(鸡粪与化肥1:1氮量在100,150,200 kg/hm2配施,表示为MF100、MF150、MF200),与单施不同用量化肥氮(0,100,150,200 kg/hm2,表示为IF0、IF100、IF150、IF200)相比较,以不施肥为对照(CK)。通过测定玉米产量、植株吸氮量、氮肥利用率及作物收获后土壤剖面矿质氮含量,
张若扬   +5 more
doaj  

Effect of AMF inoculation on root distribution and water use efficiency of Amorpha fruticosa L in western coal mining area [PDF]

open access: yes
Coal mining in arid and semi-arid areas has led to the emergence of large areas of coal mining subsiding areas. The ecological reclamation of mining areas is hard, and the mycorrhizal microbial technology for ecological restoration has become a current ...
Chao WU   +4 more
core   +1 more source

Construction of a landscape ecological network based on landscape ecological risk assessment: A case study of the resource-based city of Linfen [PDF]

open access: yes
The changes in the landscape structure within resource-dependent urban areas is influenced by a confluence of factors, potentially resulting in a decreased landscape ecological quality and a heightened ecological vulnerability.
Chenglong XU   +3 more
core   +1 more source

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]

open access: yes
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
core   +1 more source

[Experimental study on the effect of three-dimensional porous structures on the vascularization rate of artificial dermis]. [PDF]

open access: yesZhonghua Shao Shang Za Zhi, 2021
Tan RW   +11 more
europepmc   +1 more source

The promotion mechanism of how biochar affects the reclaimed soil microbial carbon sequestration capacity in coal mining areas [PDF]

open access: yes
Biochar application is a key measure for enhancing soil quality. However, the impact of biochar applications on the reclaimed soil for improvement on soil physicochemical properties, enzyme activity and microbial diversity is still unclear, especially ...
Fu CHEN   +5 more
core   +1 more source

Clinical characteristics of pulmonary alveolar proteinosis. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban, 2021
Long Y   +5 more
europepmc   +1 more source

高潜水位矿区不同复垦方式下土壤热导率及其影响因素

open access: yesShuitu Baochi Xuebao, 2017
以东部高潜水位采煤塌陷耕地为研究对象,研究挖深垫浅复垦、充填复垦、预复垦3种复垦方式下土壤热导率的分布及原因。在3种复垦方式典型样地上开挖剖面,分别取0—20,20—40,40—60 cm土层土样,经试验分析观测土壤热导率及相关物理指标。结果表明:(1)复垦方式、剖面层次和二者交互作用均是使热导率产生显著差别的因素 ...
闵祥宇, 李新举
doaj  

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