نتایج جستجو برای: soil aggregation

تعداد نتایج: 245141  

Journal: :Canadian Journal of Soil Science 1989

Journal: :Open data journal for agricultural research 2023

This dataset contains interpolated and aggregated soil climate data of the region North Rhine-Westphalia (Germany). The is provided for grids 1, 10, 25, 50 100 km resolutions. These represent spatial aggregations approximately 1 resolution 300 m raster. purpose this use as input crop models. It thus key relevant variables running Additionally, specifically designed to analyze effects scale in m...

Journal: :Computers & Geosciences 2005
Jun Wang James M. Hassett Theodore A. Endreny

An object-oriented design (OOD) approach is used to describe watershed scale hydrologic processes. Individual objects (or processes) at multiple levels are described using the ‘inheritance’ concept, while the interactions of objects (or processes) are described using the ‘aggregation’ concept. This design methodology is applied to create the new watershed based hydrological model OBJTOP (OBJect...

Journal: :Environmental monitoring and assessment 2017
S E Obalum G U Chibuike S Peth Y Ouyang

Soil organic matter (SOM) is known to play vital roles in the maintenance and improvement of many soil properties and processes. These roles, which largely influence soil functions, are a pool of specific contributions of different components of SOM. The soil functions, in turn, normally define the level of soil degradation, viewed as quantifiable temporal changes in a soil that impairs its qua...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده جنگلداری و مهندسی چوب و کاغذ 1391

درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...

2016
Shulan Zhang Renjie Wang Xueyun Yang Benhua Sun Qinghui Li

Soil aggregation was studied in a 21-year experiment conducted on an Anthrosol. The soil management regimes consisted of cropland abandonment, bare fallow without vegetation and cropping system. The cropping system was combined with the following nutrient management treatments: control (CONTROL, no nutrient input); nitrogen, phosphorus and potassium (NPK); straw plus NPK (SNPK); and manure (M) ...

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