نتایج جستجو برای: soil land scape

تعداد نتایج: 282775  

2005
M. F. MCCABE H. GAO E. F. WOOD

A Land Surface Microwave Emission Model (LSMEM) is used to derive soil moisture estimates over Iowa during the Soil Moisture Experiment 2002 (SMEX02) field campaign, using brightness temperature data from the Advanced Microwave Sounding Radiometer (AMSR)-E satellite. Spatial distributions of the near-surface soil moisture are produced using the LSMEM, with data from the North American Land Data...

2015
Caihuan Wang Zhenhong Gu Hang Cui Honghui Zhu Shenlei Fu Qing Yao Gotthard Kunze

Land use type is key factor in restoring the degraded soils due to its impact on soil chemical properties and microbial community. In this study, the influences of land use type on arbuscular mycorrhizal fungal (AMF) community and soil chemical properties were assessed in a long-run experimental station in subtropical hilly area of southern China. Soil samples were collected from forest land, o...

2011
S. Ayoubi F. Khormali K. L. Sahrawat A. C. Rodrigues de Lima

A study was conducted to determine suitable soil properties as soil quality indicators, using factor analysis in order to evaluate the effects of land use change on loessial hillslope soils of the Shastkola District in Golestan Province, northern Iran. To this end, forty surface soil (0-30 cm) samples were collected from four adjacent sites with the following land uses systems: (1) natural fore...

1997
James D. Wickham Robert V. O'Neill Kurt H. Riitters Bruce Jones

investigation of the sensitivity of these measurements to clasCalcuiation of landscape metrics from land-cover data is besification error (Hess, 1994). he objectives of this paper are coming increasingly common. Some studies have shown that two-fold: (1) to determine the sensitivity of landscape these measurements are sensitive to differences in land-cover metrics to land-cover misclassificatio...

2006
YUNHAO CHEN XIAOBING LI PEIJUN SHI ADU GONG WEN DOU

A remote sensing approach towards modelling the land cover pattern for controlling local soil erosion based on the universal soil loss equation (USLE) was developed. The approach was used to analyse the possible impact of land cover changes on local ecological security. Then, land cover pattern optimization aiming at the reduction of local soil erosion was taken. Results show that this method c...

2000
W. M. Post K. C. Kwon

When agricultural land is no longer used for cultivation and allowed to revert to natural vegetation or replanted to perennial vegetation, soil organic carbon can accumulate by processes that essentially reverse some of the effects responsible for soil organic carbon losses from when the land was converted from perennial vegetation. We discuss the essential elements of what is known about soil ...

2014
Pratibha T. Das S. Sudhakar

Land evaluation procedure given by FAO for soil site suitability for various land utilization types for rainfed agriculture has been used to assess the land suitability for khasi mandarin orange and pineapple in East Khasi Hills District of Meghalaya. The database on soil and land use/land cover was generated from IRS-P6 remote sensing satellite data, soil survey and laboratory analysis of soil...

2014
Doreen Amponsah Godfred Etsey Sebiawu

The soil test analysis conducted by research on variety of crop growing soil gave values of 1220ppm of Phosphate which is regarded to be adequate for plant establishment and production. In the case of Sulphate, the experimental results obtained were as follows: virgin land (14.8ppm), tomato land (20.9ppm), cassava land (43.3ppm). Soil test analysis gave standard sulphate values required for gro...

Journal: :Journal of environmental quality 2010
Huruy Zerzghi Charles P Gerba John P Brooks Ian L Pepper

This study evaluated the influence of 20 annual land applications of Class B biosolids on the soil microbial community. The potential benefits and hazards of land application were evaluated by analysis of surface soil samples collected following the 20th land application of biosolids. The study was initiated in 1986 at the University of Arizona Marana Agricultural Center, 21 miles north of Tucs...

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2010
Jean-François Ponge

23 24 Beside biotic interactions, habitat preference and dispersal ability of species play a prominent 25 role in the building of animal species assemblages. However, these traits are usually very poorly 26 documented for soil organisms. A soil transfer experiment was designed to study habitat preference 27 (including land-use and soil preference) and dispersal ability of soil springtail specie...

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