Results 81 to 90 of about 63,845 (293)

Influential Factors of Loess Liquefaction and Pore Pressure Development

, 2005
The liquefaction of loess under dynamic loading is studied experimentally with a dynamic triaxial test system. The effects of over-consolidation ratio (OCR), saturation degree and the frequency of dynamic loading upon loess liquefaction are investigated.
Zhang Y, 高福平, Zhao CG, Yang ZM, Zhao, CG (reprint author), Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China.   +4 more
core   +1 more source

Asynchronous Response of Plant Productivity and Soil Aggregate Nutrients to Grazing Exclusion Duration in Alpine Steppe

Land Degradation &Development, EarlyView.
ABSTRACT Grazing exclusion is a critical restoration measure for degraded alpine steppe ecosystems. However, research remains limited on the key factors influencing soil aggregates that affect plant productivity and the mechanisms influencing nutrient distribution across aggregates of different size fractions during long‐term grazing exclusion.
Tan Feng, Xin Pu, Chunlei Lv, Lei Sun
wiley   +1 more source

Loess as a collapsible soil: Some basic particle packing aspects [PDF]

, 2017
Loess is the most important collapsible soil; possibly the only engineering soil in which real collapse occurs. A real collapse involves a diminution in volume - it would be an open metastable packing being reduced to a more closely packed, more stable ...
Ng’ambi, Samson, Smalley, Ian, Assadi Langroudi, Arya Assadi   +2 more
core   +1 more source

Microbial functional taxa promote soil multifunctionality in naturally restoring subalpine meadows

Global Ecology and Conservation
Understanding how microbial communities impact soil multifunctionality is crucial to restoration and management of degraded ecosystems. Previous studies have primarily focused on the linkage between soil multifunctionality and community biodiversity ...
Qianru Ren, Jinxian Liu, Yuqi Wei, Zhengming Luo, Tiehang Wu, Baofeng Chai   +5 more
doaj   +1 more source

Long‐Term Operation of Photovoltaic Power Stations Promotes Soil Carbon Sequestration but Induces Stoichiometric C:N:P Imbalance in Desert Ecosystems

Land Degradation &Development, EarlyView.
ABSTRACT Soil carbon‐nitrogen‐phosphorus (C:N:P) stoichiometry governs nutrient cycling and carbon sequestration in desert ecosystems, yet how large‐scale photovoltaic (PV) deployment, a cornerstone of global carbon neutrality, shifts these stoichiometric balances and whether such shifts enhance or degrade long‐term land function remain unresolved over
Anlin Wang, Fenghua Sun, Longfei Chen, Hong Yang, Panxing He, Zhanjun Wang, Xudong Wu, D. M. Sabra, Rui Ma, Jianhua Xiao   +9 more
wiley   +1 more source

Loess: Rock, sediment or soil : What is missing for its definition? [PDF]

, 2016
Loess is commonly defined as an accumulation of windblown silt. However, the complex mechanisms that are responsible for most of the structural characteristics of loess require a more precise explanation.
Obreht, Igor, Sprafke, Tobias
core   +1 more source

Afforestation Partially Offsets Losses of Soil Conservation Services and Carbon Stock From Direct and Indirect Urban Expansion in China

Land Degradation &Development, EarlyView.
ABSTRACT Urban expansion has exerted both direct and indirect impacts on natural land and ecosystem services it supports, driven by increasing population and food demand, yet these underlying pathways remain insufficiently distinguished. Here, we quantified the losses of soil conservation services (water erosion regulation and sandstorm prevention) and
Shuai Liu, Ting Hua, Shurong Zhang, Yiman Zhang, Wenwu Zhao   +4 more
wiley   +1 more source

Effects of Biochar on Freezing Temperature and Unfrozen Water Content in Pb‐Contaminated Seasonally Frozen Soils: Implications for Mitigating Land Degradation

Land Degradation &Development, EarlyView.
ABSTRACT Freeze–thaw processes are important drivers of land degradation in cold regions, and soil freezing temperature and unfrozen water content are key parameters for characterizing soil hydrothermal conditions and water phase transitions during freezing.
Shanbo Han, Yaling Chou, Wei Cao, Fupeng Yang, Yu Wang, Xunkun Guo   +5 more
wiley   +1 more source

Determining the Optimal Water Storage Depth of Apple Orchards in the Chinese Loess Plateau: Balancing Soil Desiccation Mitigation, Plant Utilization, and Engineering Construction

Land Degradation &Development, EarlyView.
ABSTRACT Deep‐rooted plantations are central to dryland ecological restoration, yet their long‐term cultivation drives widespread deep soil desiccation, threatening ecosystem sustainability. While artificial water replenishment is a key deep soil desiccation mitigation strategy, the depth‐dependent positional effect of stored water on eco‐hydrological ...
Haoyan Wei, Xuguang Zhang, Yanwei Lu, Sk Shamshul Alam Kamar, Hailong He, Xia Wang, Min Li   +6 more
wiley   +1 more source

Quantifying paleoprecipitation of the Luochuan and Sanmenxia Loess on the Chinese Loess Plateau

, 2016
Paleoprecipitation is one of the most important paleoclimatic factors for monsoon studies. Magnetic properties of the Chinese loess/paleosol sequences have been demonstrated to be controlled strongly by the mean annual precipitation (MAP). In this study,
Liu, Zhifeng, Wei, Gangjian, Wang, Xisheng, Jin, Chunsheng, Liu, Qingsong   +4 more
core   +1 more source