نتایج جستجو برای: soil land scape

تعداد نتایج: 282775  

2016
Zhiwei Wang Shengtian Yang Changsen Zhao Juan Bai Hezhen Lou Ke Chen Linna Wu Guotao Dong Qiuwen Zhou Mustafa M. Aral

The transport characteristics of phosphorus in soil and the assessment of its environmental risk have become hot topics in the environmental and agricultural fields. The Sanjiang Plain is an important grain production base in China, and it is characterised by serious land use change caused by large-scale agricultural exploitation. Agricultural inputs and tillage management have destroyed the so...

Soil erosion and sediment yield from watersheds confine sustainable use of land resources and is supposed as one of the most critical environmental issues. Prediction of storm wise soil erosion and sediment yield is very important, especially in arid and semiarid regions due to small number of events and high intensity of rainfall. Evaluation of soil erosion by existing models is needed as an i...

2015

Land degradation and soil erosion threaten agricultural productivity, food security and environmental sustainability. Because formation of new soil takes place over a period of thousands of years, in human terms it is essentially a finite resource. Human activity has accelerated erosion rates through inappropriate land management practices, most importantly soil sealing, deforestation and inten...

2017
Zhiyuan Zheng Zhigang Wei Zhiping Wen Wenjie Dong Zhenchao Li Xiaohang Wen Xian Zhu Dong Ji Chen Chen Dongdong Yan

Land surface albedo is a significant parameter for maintaining a balance in surface energy. It is also an important parameter of bare soil surface albedo for developing land surface process models that accurately reflect diurnal variation characteristics and the mechanism behind the solar spectral radiation albedo on bare soil surfaces and for understanding the relationships between climate fac...

2016
G. Arjen de Groot Gerard A. J. M. Jagers op Akkerhuis Wim J. Dimmers Xavier Charrier Jack H. Faber

Citation: de Groot GA, Jagers op Akkerhuis GAJM, Dimmers WJ, Charrier X and Faber JH (2016) Biomass and Diversity of Soil Mite Functional Groups Respond to Extensification of Land Management, Potentially Affecting Soil Ecosystem Services. Front. Environ. Sci. 4:15. doi: 10.3389/fenvs.2016.00015 Biomass and Diversity of Soil Mite Functional Groups Respond to Extensification of Land Management, P...

Land use change as the most important destructive factor in natural ecosystems is a globally problem that changes soil properties. Therefore, correct management and recognition of change aspects on each component of the ecosystem is necessary. This process causes land destruction, ecosystem instability, soil erosion, and more biological threats. Due to increasing land use conversion from rangel...

2014
Gift Dumedah Jeffrey P. Walker

Numerous land surface models exist for predicting water and energy fluxes in the terrestrial environment. These land surface models have different conceptualizations (i.e., process or physics based), together with structural differences in representing spatial variability, alternate empirical methods, mathematical formulations and computational approach. These inherent differences in modeling a...

  Soil organic carbon (SOC) is a principal component in soil quality assessment. Knowledge of SOC and total nitrogen (TN) stocks are important keys to understand the role of SOC in the global carbon cycle and, as a result, in the mitigation of global greenhouse effects. SOC and TN stocks are functions of the SOC concentration and the bulk density of the soil that are prone to changes, influe...

2015
Biola K. Badmos Sampson K. Agodzo Grace B. Villamor Samuel N. Odai Kwame Nkrumah James Millington

Soil loss is not limited to change from forest or woodland to other land uses/covers. It may occur when there is agricultural land-use/cover modification or conversion. Soil loss may influence loss of carbon from the soil, hence implication on greenhouse gas emission. Changing land use could be considered actually or potentially successful in adapting to climate change, or may be considered mal...

2017
Ling Zhang Raghupathy Karthikeyan Hui Zhang Yuxuan Tang

Soil erosion is one of the most serious land degradation problems and the primary environmental issue in the Loess Plateau region of China. To identify the critical sub-basins and assess the impacts of land use change and climatic variability change on soil loss, this study tested the feasibility of the Soil and Water Assessment Tool (SWAT) model on sediment load simulation in the upper Sang-ka...

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