Remote Sensing of Anthropogenic Activities: Agricultural Production

2016 ◽  
pp. 1-7
Author(s):  
Nathan Torbick ◽  
Bill Salas ◽  
Xiangming Xiao
Keyword(s):  
Remote Sensing ◽  
Agricultural Production ◽  
Anthropogenic Activities

scholarly journals Remote Sensing Methods for the Biophysical Characterization of Protected Areas Globally: Challenges and Opportunities

2021 ◽  
Vol 10 (6) ◽  
pp. 384
Author(s):  
Javier Martínez-López ◽  
Bastian Bertzky ◽  
Simon Willcock ◽  
Marine Robuchon ◽  
María Almagro ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Protected Areas ◽  
Large Scale ◽  
Anthropogenic Activities ◽  
Global Scale ◽  
Area Network ◽  
Biophysical Characterization ◽  
Challenges And Opportunities ◽  
Scale Characterization

Protected areas (PAs) are a key strategy to reverse global biodiversity declines, but they are under increasing pressure from anthropogenic activities and concomitant effects. Thus, the heterogeneous landscapes within PAs, containing a number of different habitats and ecosystem types, are in various degrees of disturbance. Characterizing habitats and ecosystems within the global protected area network requires large-scale monitoring over long time scales. This study reviews methods for the biophysical characterization of terrestrial PAs at a global scale by means of remote sensing (RS) and provides further recommendations. To this end, we first discuss the importance of taking into account the structural and functional attributes, as well as integrating a broad spectrum of variables, to account for the different ecosystem and habitat types within PAs, considering examples at local and regional scales. We then discuss potential variables, challenges and limitations of existing global environmental stratifications, as well as the biophysical characterization of PAs, and finally offer some recommendations. Computational and interoperability issues are also discussed, as well as the potential of cloud-based platforms linked to earth observations to support large-scale characterization of PAs. Using RS to characterize PAs globally is a crucial approach to help ensure sustainable development, but it requires further work before such studies are able to inform large-scale conservation actions. This study proposes 14 recommendations in order to improve existing initiatives to biophysically characterize PAs at a global scale.

scholarly journals Ozone Response of Leaf Physiological and Stomatal Characteristics in Brassica juncea L. at Supraoptimal Temperatures

Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 357
Author(s):  
Jong Kyu Lee ◽  
Myeong Ja Kwak ◽  
Sang Hee Park ◽  
Han Dong Kim ◽  
Yea Ji Lim ◽  
...  
Keyword(s):  
Brassica Juncea ◽  
Agricultural Production ◽  
Stomatal Density ◽  
Anthropogenic Activities ◽  
Interactive Effects ◽  
Target Concentration ◽  
Stomatal Characteristics ◽  
Elevated O3 ◽  
Significant Difference ◽  
Supraoptimal Temperatures

Plants are affected by the features of their surrounding environment, such as climate change and air pollution caused by anthropogenic activities. In particular, agricultural production is highly sensitive to environmental characteristics. Since no environmental factor is independent, the interactive effects of these factors on plants are essential for agricultural production. In this context, the interactive effects of ozone (O3) and supraoptimal temperatures remain unclear. Here, we investigated the physiological and stomatal characteristics of leaf mustard (Brassica juncea L.) in the presence of charcoal-filtered (target concentration, 10 ppb) and elevated (target concentration, 120 ppb) O3 concentrations and/or optimal (22/20 °C day/night) and supraoptimal temperatures (27/25 °C). Regarding physiological characteristics, the maximum rate of electron transport and triose phosphate use significantly decreased in the presence of elevated O3 at a supraoptimal temperature (OT conditions) compared with those in the presence of elevated O3 at an optimal temperature (O conditions). Total chlorophyll content was also significantly affected by supraoptimal temperature and elevated O3. The chlorophyll a/b ratio significantly reduced under OT conditions compared to C condition at 7 days after the beginning of exposure (DAE). Regarding stomatal characteristics, there was no significant difference in stomatal pore area between O and OT conditions, but stomatal density under OT conditions was significantly increased compared with that under O conditions. At 14 DAE, the levels of superoxide (O2-), which is a reactive oxygen species, were significantly increased under OT conditions compared with those under O conditions. Furthermore, leaf weight was significantly reduced under OT conditions compared with that under O conditions. Collectively, these results indicate that temperature is a key driver of the O3 response of B. juncea via changes in leaf physiological and stomatal characteristics.

scholarly journals Recent evolution of the Irrawaddy (Ayeyarwady) Delta and the impacts of anthropogenic activities: A review and remote sensing survey

Geomorphology ◽  
2020 ◽  
Vol 365 ◽  
pp. 107231 ◽  
Author(s):  
Dan Chen ◽  
Xing Li ◽  
Yoshiki Saito ◽  
J. Paul Liu ◽  
Yuanqiang Duan ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Anthropogenic Activities

CHINAMPAAGRICULTURE, SURPLUS PRODUCTION, AND POLITICAL CHANGE AT XALTOCAN, MEXICO

2016 ◽  
Vol 27 (1) ◽  
pp. 183-196 ◽  
Author(s):  
Christopher T. Morehart
Keyword(s):  
Remote Sensing ◽  
Political Economy ◽  
Agricultural Production ◽  
Total Population ◽  
Body Politic ◽  
The Body ◽  
The Political ◽  
Potential Productivity ◽  
Surplus Production ◽  
Full Production

AbstractThis article examines the productivity of agriculture at the Postclassic polity of Xaltocan, Mexico. Employing multiple lines of data (remote sensing, artifactual, ecofactual, chronological, demographic, historic, ethnographic, and environmental), it reconstructs the potential productivity of an integrated raised field,chinampasystem that surrounded the polity. This exercise reveals that the system was capable of producing a sizeable caloric surplus above the needs of the kingdom's estimated total population and the number of laborers necessary to maintain full production. To situate the processes related to agricultural production, the paper considers how farmers’ strategies were articulated with multiple institutions. Increased integration between political, social, and household institutions possibly fostered residents’ incorporation into the body politic and provided mechanisms to finance the political economy. Such integration and dependency fractured, however, when Xaltocan was conquered.

scholarly journals Analysis of the environmental impacts caused by fires in the state California from 1999 to 2017

2018 ◽  
pp. 147
Author(s):  
João Vitaliano de Carvalho Rocha
Keyword(s):  
Remote Sensing ◽  
Environmental Impacts ◽  
Search Engine ◽  
Agricultural Production ◽  
The State ◽  
Conservation And Development ◽  
Wood Extraction ◽  
Leisure And Recreation

The primary objetive of this research has been the study of the multiple fires that have affected the State of California over the last decade. California is a region where collage the largest leading agricultural production and conservatio, military areas, wildlife reserves, cooperative plans for the conservation and development of wildlife and wildlife managed by the Navy. The Google tool was used has a search engine to obtaine the data througth articles and sites, as well as images obtained by remote sensing. It was noted that even today, a large number of fires in California are not justified by scientists in the agencies responsible for their extincion. The larger number of fires in California over the last decades an unprecedented destruction of homes and commercial establishments; areas of agriculture, livestock, leisure and recreation completely characterizing the region, despite the fact that so much wood extraction is common.

scholarly journals Geospatial assessment of land use and land cover dynamics in the mid-zone of Ghana

2020 ◽  
Vol 62 (4) ◽  
pp. 288-305
Author(s):  
Addo Koranteng ◽  
Isaac Adu-Poku ◽  
Emmanuel Donkor ◽  
Tomasz Zawiła-Niedźwiecki
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Land Cover ◽  
Satellite Imagery ◽  
Forest Cover ◽  
Anthropogenic Activities ◽  
Arable Land ◽  
Rapid Urbanization ◽  
The Past ◽  
Open Forest

AbstractLand use and land cover (LULC) terrain in Ghana has undergone profound changes over the past years emanating mainly from anthropogenic activities, which have impacted countrywide and sub-regional environment. This study is a comprehensive analysis via integrated approach of geospatial procedures such as Remote Sensing (RS) and Geographic Information System (GIS) of past, present and future LULC from satellite imagery covering Ghana’s Ashanti regional capital (Kumasi) and surrounding districts. Multi-temporal satellite imagery data sets of four different years, 1990 (Landsat TM), 2000 (Landsat ETM+), 2010 (Alos and Disaster Monitoring Constellation-DMC) and 2020 (SENTINEL), spanning over a 30-year period were mapped. Five major LULC categories – Closed Forest, Open Forest, Agriculture, Built-up and Water – were delineated premised on the prevailing geographical settings, field study and remote sensing data. Markov Cellular Automata modelling was applied to predict the probable LULC change consequence for the next 20 years (2040). The study revealed that both Open Forest and Agriculture class categories decreased 51.98 to 38.82 and 27.48 to 20.11, respectively. Meanwhile, Built-up class increased from 4.8% to 24.8% (over 500% increment from 1990 to 2020). Rapid urbanization caused the depletion of forest cover and conversion of farmlands into human settlements. The 2040 forecast map showed an upward increment in the Built-up area up to 35.2% at the expense of other LULC class categories. This trend from the past to the forecasted future would demand that judicious LULC resolutions have to be made to keep Ghana’s forest cover, provide arable land for farming activities and alleviate the effects of climate change.

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