نتایج جستجو برای: irrigated farmlands

تعداد نتایج: 9911  

2007
Lili Wang Jinyuan Xin Yuesi Wang Zhanqing Li Guangren Liu Jing Li

The accuracy of the Moderate Resolution Imaging Spectroradiometer’s (MODIS) aerosol products is still uncertain in China, due to a lack of validation by long-term and large-scale ground-based observations. In this paper, the MODIS aerosol optical depth (AOD) product is evaluated using Chinese Sun Hazemeter Network (CSHNET) data as ground truths over different ecological regions in China during ...

2013
Andrew B. Stein Todd K. Fuller Laurie L. Marker

We identified the diet of brown hyaenas (Hyaena brunnea) on the farmlands of north-central Namibia based on scat analysis, den site orts, and evidence of scavenging at leopard (Panthera pardus) kills. In the absence of larger carnivores, which have been credited with providing larger food items for brown hyaenas elsewhere, we compared interspecific dietary overlap and activity patterns with the...

2013
Shiqiang Du Peijun Shi Anton Van Rompaey

China is rapidly urbanizing and will inevitably face trade-offs between promoting economic growth through further urbanization and protecting fertile farmland against accelerated urban expansion. This paper presents how this dilemma is being addressed in one of the most rapidly urbanizing regions in China, the Pearl River Delta (PRD), by means of assessing urban growth and farmland dynamic, as ...

Journal: :Environmental Science & Technology 2008

2007
Todd D. Davis Charles E. Curtis

Table 1. 2007 Estimated Return over Variable Costs for Cotton and Peanuts. Non-Irrigated Non-Irrigated Irrigated Irrigated Cotton Peanuts Cotton Peanuts Harvest Price 1/ $0.60 $0.21 $0.60 $0.21 Yield 750 300

A. Gholami, E. Zeinali H.R. Asgari

This research delves into investigating the effects of different soil management practices on soil physical properties, yield and yield’s components of irrigated wheat. This experimental design was administered in the form of the nested testing with three treatments (no tillage, low tillage and conventional tillage) and three replicates in some of the farmlands of Chenran Township. The results ...

This study aimed to evaluate concentrations of selected heavy metals in the soils of Ilokun dumpsite and adjourning farmlands, and to determine as well levels of heavy metals uptake in various parts of Carica papaya plant collected from the dumpsite. Twenty-two soil samples were collected within the dumpsites and farmlands at depths of 0-20 cm and 20-40 cm. Evaluations of heavy metals ...

2016
Upendra M. Sainju Wenju Liang

Little is known about management practices that can simultaneously improve soil and environmental quality and sustain crop yields. The effects of novel and traditional management practices that included a combination of tillage, crop rotation, and N fertilization on soil C and N, global warming potential (GWP), greenhouse gas intensity (GHGI), and malt barley (Hordeum vulgarie L.) yield and qua...

Journal: :Environment international 2005
Ying Chen Chunxia Wang Zijian Wang

Sewage and industrial effluents from biological treatment plant have been widely used for agricultural irrigation in north part of China. However, effluents after biological treatment still contain heavy metals and persistent organic contaminants. The persistent organic contaminants accumulated in soil may transfer through the food chains and cause adverse health effects on human or biological ...

Journal: :Remote Sensing 2011
Muralikrishna Gumma Prasad S. Thenkabail Fujii Hideto Andrew Nelson Venkateswarlu Dheeravath Dawuni Busia Arnel B. Rala

Maps of irrigated areas are essential for Ghana’s agricultural development. The goal of this research was to map irrigated agricultural areas and explain methods and protocols using remote sensing. Landsat Enhanced Thematic Mapper (ETM+) data and time-series Moderate Resolution Imaging Spectroradiometer (MODIS) data were used to map irrigated agricultural areas as well as other land use/land co...

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