نتایج جستجو برای: cropped ratio

تعداد نتایج: 503350  

1997
Johannes Lehmann Inka Peter Claudia Steglich Gerhard Gebauer Bernd Huwe Wolfgang Zech

This paper discusses the effects of intercropping and tree pruning on root distribution and soil water depletion in an alley cropping system with Acacia saligna and Sorghum bicolor in northern Kenya. Root distribution was determined by destructive sampling, and the soil water suction was measured with tensiometers and gypsum blocks, both up to 150 cm depth. The root systems of the intercropped ...

Journal: :International Journal of Computer Applications 2013

Journal: :International Journal of Current Microbiology and Applied Sciences 2020

2015
Ruth E. Feber Paul J. Johnson James R. Bell Dan E. Chamberlain Leslie G. Firbank Robert J. Fuller Will Manley Fiona Mathews Lisa R. Norton Martin Townsend David W. Macdonald Christopher Joseph Salice

Organic farming, a low intensity system, may offer benefits for a range of taxa, but what affects the extent of those benefits is imperfectly understood. We explored the effects of organic farming and landscape on the activity density and species density of spiders and carabid beetles, using a large sample of paired organic and conventional farms in the UK. Spider activity density and species d...

2015

Fig 8 is incorrectly cropped due to errors introduced during the typesetting process. The publisher apologizes for the error. Please see the corrected Fig 8 here. open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

2016
T. T. Ng S. F. Chang J. Hsu L. Xie R. Neelamani R. D. Queiroz Z. Fang

In this paper a detailed study regarding Digital Image Forgery on Jpeg images is provided. Here, copy-paste block detection on a special case of double Jpeg compression Shifted Double Jpeg Compression, is identified based on the characteristics of Double Jpeg compression. In certain cases the tampered image will be cropped, the paper uses properties of Block Artifacting method to identify such ...

2015
Jonas Abeln Leonie Fresz Seyed Ali Amirshahi I. Chris McManus Michael Koch Helene Kreysa Christoph Redies

Photographic cropping is the act of selecting part of a photograph to enhance its aesthetic appearance or visual impact. It is common practice with both professional (expert) and amateur (non-expert) photographers. In a psychometric study, McManus et al. (2011b) showed that participants cropped photographs confidently and reliably. Experts tended to select details from a wider range of position...

Journal: :Geophysical Research Letters 2022

Intensive crop growth can modify regional climate by partitioning energy to latent heating through transpiration, cooling growing season temperatures. Recent work shows that associated with agriculture dampen anthropogenic warming over breadbasket regions. However, it is unknown whether models reproduce influences on climate, and thus the future risk of extreme events global We show overestimat...

Journal: :Journal of environmental quality 2010
Dong-Gill Kim Thomas M Isenhart Timothy B Parkin Richard C Schultz Thomas E Loynachan

While water quality functions of conservation buffers established adjacent to cropped fields have been widely documented, the relative contribution of these re-established perennial plant systems to greenhouse gases has not been completely documented. In the case of methane (CH(4)), these systems have the potential to serve as sinks of CH(4) or may provide favorable conditions for CH(4) product...

Journal: :Journal of environmental quality 2006
S J Del Grosso W J Parton A R Mosier M K Walsh D S Ojima P E Thornton

Until recently, Intergovernmental Panel on Climate Change (IPCC) emission factor methodology, based on simple empirical relationships, has been used to estimate carbon (C) and nitrogen (N) fluxes for regional and national inventories. However, the 2005 USEPA greenhouse gas inventory includes estimates of N2O emissions from cultivated soils derived from simulations using DAYCENT, a process-based...

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