Abstract:
:The southwest of Western Australia is affected by dryland salinity that results in the loss of previously productive agricultural land, damage to buildings, roads, and other infrastructure, decline in pockets of remnant vegetation and biodiversity, and reduction in water quality. Accurate information on the location and rate of change of the extent of saline land over the region is required by resource managers. For the first time, comprehensive, spatially explicit maps of dryland salinity and its change over approximately 10 yr for the southwest agricultural region of Western Australia have been produced operationally in the 'Land Monitor' project. The methods rely on an integrated analysis of long-term sequences of Landsat TM satellite image data together with variables derived from digital elevation models (DEMs). Understanding of the physical process and surface expression of salinity provided by experts was used to guide the analyses. Ground data-the delineation of salt-affected land by field experts-was collected for training and validation. The results indicate that the land area currently affected by salinity in Western Australia's southwest is about 1 million hectares (in 1996) and the annual rate of increase is about 14,000 ha. This is a lesser extent than many previous estimates and lower rate of change than generally predicted from limited hydrological data. The results are widely distributed and publicly available. The key to providing accurate mapping and monitoring information was the incorporation of time series classification of a sequence of images over several years combined with landform information.
journal_name
J Environ Qualjournal_title
Journal of environmental qualityauthors
Furby S,Caccetta P,Wallace Jdoi
10.2134/jeq2009.0036subject
Has Abstractpub_date
2009-12-30 00:00:00pages
16-25issue
1eissn
0047-2425issn
1537-2537pii
39/1/16journal_volume
39pub_type
杂志文章abstract::Agricultural ecosystems are of special interest for monitoring the potential for antibiotic resistance to spread through the environment and contribute to human exposure. Molecular methods, which target DNA, RNA, and other molecular components of bacterial cells, present certain advantages for characterizing and quant...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2015.07.0367
更新日期:2016-03-01 00:00:00
abstract::There is increasing concern about the environmental fate and impact of biosolids-associated anthropogenic organic chemicals, among which 4-nonylphenol (4-NP) is one of the most studied chemicals. This is primarily because 4-NP is an endocrine disruptor and has been frequently detected in environmental samples. Due to ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1568
更新日期:2004-07-01 00:00:00
abstract::Forage-based livestock systems have been implicated as major contributors to deteriorating water quality, particularly for phosphorus (P) from commercial fertilizers and manures affecting surface and ground water quality. Little information exists regarding possible magnitudes of nutrient losses from pastures that are...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0246
更新日期:2006-01-05 00:00:00
abstract::The short life span of many street trees in the Montreal downtown area may be due in part to higher than standard concentrations of trace metals in the tree pit soils. The effects of land use, soil organic matter, and time since tree planting in a given tree pit (soil age) were studied with respect to the total concen...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2013.02.0055
更新日期:2013-09-01 00:00:00
abstract::Phosphorus (P) runoff from fields fertilized with swine (Sus scrofa domesticus) manure may contribute to eutrophication. The objective of this study was to evaluate the effect of aluminum sulfate (alum) and aluminum chloride applications to swine manure on P runoff from small plots cropped to tall fescue (Festuca arun...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2001.303992x
更新日期:2001-05-01 00:00:00
abstract::Placement strategies for P fertilizer can affect P availability to crops and influence the amounts and forms of P removed from soil in runoff, contributing to eutrophication. On the Canadian prairies, most runoff occurs during snowmelt. Two adjacent farm fields in Saskatchewan, Canada, were used to assess the effects ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2018.07.0276
更新日期:2019-05-01 00:00:00
abstract::The former US Steel Corporation's South Works site in Chicago, IL, is a 230-ha bare brownfield consisting of steel mill slag fill materials that will need to be reclaimed to support and sustain vegetation. We conducted a case study to evaluate the suitability of biosolids and dredged sediments for capping the steel mi...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2015.09.0456
更新日期:2016-01-01 00:00:00
abstract::There is growing interest in the role that urban forests can play as urban microclimate modifiers. Tree shade and evapotranspiration affect energy fluxes and mitigate microclimate conditions, with beneficial effects on human health and outdoor comfort. The aim of this study was to investigate surface temperature () va...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2015.02.0097
更新日期:2016-01-01 00:00:00
abstract::Beef cattle feedlots emit large amounts of the greenhouse gases (GHG) methane (CH) and nitrous oxide (NO), as well as ammonia (NH), which contributes to NO emission when NH is deposited to land. However, there is a lack of simultaneous, in situ, and nondisturbed measurements of the major GHG gas components from beef c...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2015.06.0278
更新日期:2015-11-01 00:00:00
abstract::Man has land-applied societal nonhazardous wastes for centuries as a means of disposal and to improve the soil via the recycling of nutrients and the addition of organic matter. Nonhazardous wastes include a vast array of materials, including manures, biosolids, composts, wastewater effluents, food-processing wastes, ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0007
更新日期:2005-01-01 00:00:00
abstract::We investigated the seasonal patterns of denitrification rates and potentials in soil profiles along the topohydrosequence formed at the upland-wetland interface in three riparian wetlands with different vegetation cover (i.e., forest, understory vegetation, and grass). Denitrification was measured using the acetylene...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2002.1025
更新日期:2002-05-01 00:00:00
abstract::Mobility of dissolved organic matter (DOM) strongly affects the export of nitrogen (N) and phosphorus (P) from soils to surface waters. To study the sorption and mobility of dissolved organic C and P (DOC, DOP) in soil, the pH-dependent sorption of DOM to samples from Ap, EB, and Bt horizons from a Danish agricultural...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2006.0081
更新日期:2007-04-05 00:00:00
abstract::Long-term monitoring data from agricultural watersheds are needed to determine if efforts to reduce nutrient transport from crop and pasture land have been effective. Goodwater Creek Experimental Watershed (GCEW), located in northeastern Missouri, is a high-runoff-potential watershed dominated by claypan soils. The ob...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2014.02.0059
更新日期:2015-01-01 00:00:00
abstract::Unusually high cation exchange capacity (CEC) values relative to clay content are frequently reported for lignite overburden and minesoils. The CEC to percent clay ratio is commonly greater than one and would require that the average charge of the clay fraction be greater than 100 cmol(c) kg(-1). A comparison of metho...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2001.3041143x
更新日期:2001-07-01 00:00:00
abstract::Water resources protection from nitrate nitrogen (NO3-N) contamination is an important public concern and a major national environmental issue. The abilities of the SOIL-SOILN model to simulate water drainage and nitrate N fluxes from orchardgrass (Dactylis glomerata L.) were evaluated using data from a 3-yr field exp...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2001.302584x
更新日期:2001-03-01 00:00:00
abstract::Riparian wetlands have been shown to be effective "sinks" for nitrate N (NO3-), minimizing the downstream export of N to streams and coastal water bodies. However, the vast majority of riparian denitrification research has been in agricultural and forested watersheds, with relatively little work on riparian wetland fu...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2010.0335
更新日期:2011-03-01 00:00:00
abstract::Phosphogypsum (PG), a by-product of the phosphate fertilizer industry, reduces N losses when added to composting livestock manure, but its impact on greenhouse gas emissions is unclear. The objective of this research was to assess the effects of PG addition on greenhouse gas emissions during cattle feedlot manure comp...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0388
更新日期:2005-04-20 00:00:00
abstract::Complex variation in gas emissions from animal facilities has been shown in recent research reports. Uncertainties in these emission estimates are driving research activities concerning different animal species across the globe. Greenhouse gas (NO and CO) and NH concentrations were measured in a modern, tunnel-ventila...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2013.09.0390
更新日期:2014-07-01 00:00:00
abstract::Determining the survival of zoonotic pathogens in livestock manure and runoff is critical for understanding the environmental and public health risks associated with these wastes. The occurrence and persistence of the bacterial pathogens Escherichia coli O157:H7 and Campylobacter spp. in a passive beef cattle feedlot ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2007.0100
更新日期:2007-10-24 00:00:00
abstract::Nitrogen (N) availability affects plant biomass yield and, hence, phytoextraction of contaminants during phytoremediation of end-of-life municipal lagoons. End-of-life lagoons are characterized by fluctuating moisture conditions, but the effects on biosolid N dynamics have not been adequately characterized. This 130-d...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2015.02.0084
更新日期:2015-11-01 00:00:00
abstract::Chemical immobilization is a relatively inexpensive in situ remediation method that reduces soil contaminant solubility, but the ability of this remediation treatment to reduce heavy metal bioavailability and ecotoxicity to soil invertebrates has not been evaluated. Our objectives were to (i) assess the ability of che...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2001.3041231x
更新日期:2001-07-01 00:00:00
abstract::Many soils of the Mediterranean region with a semiarid climate are subjected to progressive degradation as a result of water erosion. Biosolids and municipal solid wastes (MSW) were surface-applied once at three rates (40, 80, and 120 Mg ha(-1)) to different plots in a degraded semiarid ecosystem. The study was conduc...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2003.4720
更新日期:2003-03-01 00:00:00
abstract::A vegetated filter strip (VFS) is a measure commonly implemented in agricultural landscapes for the purpose of improving water quality. However, much of the evidence to support their effectiveness comes from warm regions dominated by rainfall driven runoff. This study assessed the performance of VFS plots and compared...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2018.12.0452
更新日期:2019-07-01 00:00:00
abstract::The effectiveness of various management practices to reduce phosphorus (P) loss from soil to water can potentially be improved by using by-product materials that have the capacity to sorb phosphorus. This study evaluated the P sorption and desorption potential, and the physicochemical characteristics of various phosph...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2007.0148
更新日期:2008-01-04 00:00:00
abstract::Due to its resistance to many wastewater treatment processes, the antiepileptic drug carbamazepine (CBZ) is routinely found in wastewater effluent. Wastewater irrigation is an alternative to stream discharge of wastewater effluent, which utilizes the soil as a tertiary filter to remove excess nutrients and has the pot...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2011.0193
更新日期:2012-07-01 00:00:00
abstract::Metal contaminants in soils can persist for millennia, causing lasting negative impacts on local ecosystems. Long-term contaminant bioavailability is related to soil pH and to the strength and stability of solid-phase associations. We combined physical density separation with synchrotron-based microspectroscopy to red...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2016.05.0184
更新日期:2017-03-01 00:00:00
abstract::The introduction of portable in situ ultraviolet-visual spectrometers has made possible the collection of water quality parameters at a high frequency in dynamic systems such as tidal marshes. The usefulness of this technology is inhibited by fouling of the instrument's optics. In this study, a spectrometer fitted wit...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2013.02.0049
更新日期:2013-11-01 00:00:00
abstract::Trace elements (TEs) are universally present in environmental media, including soil, but agriculture uses some materials that have increased TE concentrations. Some TEs (e.g., Cu, Se, and Zn) are added to animal feeds to ensure animal health. Similarly, TEs are present in micronutrient fertilizers. In the case of phos...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0195
更新日期:2009-03-25 00:00:00
abstract::One strategy to limiting eutrophication in waterways is to reduce the concentration of water-extractable P (WEP) in land-applied manure. In this study, we investigated the feasibility of using mine drainage residuals (MDR), waste solids produced in large quantities from coal mine drainage treatment, to reduce WEP in d...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.1002/jeq2.20157
更新日期:2020-11-01 00:00:00
abstract::Alum [Al(SO4) ·14HO] addition to poultry litter has been shown to reduce ammonia (NH) concentrations in poultry houses; however, its effects on greenhouse gas (GHG; NO, CH, and CO) emissions is unknown. The objectives of this study were to determine the effects of alum additions on (i) in-house NH and GHG concentratio...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2014.09.0404
更新日期:2015-09-01 00:00:00