scholarly journals Evaluation of the Agreements of the National Reforestation Program in the Santiago de Quito, Palmira, Pistishi and Compud parishes, Chimborazo Province

2021 ◽  
Author(s):  
A. Huisha ◽  
V. Espinoza ◽  
G. Aldaz
Keyword(s):  
Forest Restoration ◽  
Ground Surface ◽  
Central Office ◽  
Control Points ◽  
Palabras Clave ◽  
Reforestation Program

The objective of this study was to evaluate the Forest Restoration agreements, by means of sampling the equivalent of 10% of the entire ground surface and 10% of the total land, in which control points were established in order to estimate the planted area; for the verification of land for reforestation, the control points were issued from the central office, which were located in the field with GPS; then the systematization of the data collected in the field was carried out. In the Palmira parish, the area evaluated showed 39.38 ha (74.94%) in which there were indications of planting, and 12.84 ha (26.06%) that did not show signs of planting; 57 farms were evaluated, of which 14 (71.93%) presented evidence of planting and 16 farms (28.07%) had no such evidence. In the Pistishi parish, the area evaluated had 36.27 ha (93.81%) in which there were signs of planting, and 2.39 ha (6.19%) that did not show signs of planting; 29 farms were evaluated, of which 22 (75.86%) presented evidence of planting and 2 (24.14%) had no evidence of planting. The properties evaluated in the Santiago de Quito and Compud parishes were considered for reforestation. Keywords: forest restoration, inventory, biodiversity, reforestation. Resumen El objetivo del trabajo fue evaluar los convenios de Restauración Forestal, mediante un muestreo equivalente al 10% de toda la superficie y el 10% del total de los predios, en los que se establecieron puntos de control con la finalidad de estimar la superficie plantada; para la verificación de predios para la reforestación, desde central fue emitido los puntos de control los mismos que fueron ubicados en campo con GPS; seguidamente se realizó la sistematización de los datos recogidos en campo. En la parroquia Palmira se evalúo un área plantada de 39,38 ha (74,94%) en el que se registró indicios de haberse plantado, 12,84 ha (26,06%) no presento indicios de plantación; se evaluaron 57 predios de los cuales 14 (71,93%) presentó plantaciones y 16 predios (28,07%) no se registra indicios de plantación. En ella Parroquia Pistishi se evalúo un área de 36,27 ha (93,81%) en el que se registró indicios de plantación, 2,39 ha (6,19%) no presento indicios de plantación; se evaluaron 29 predios de los cuales 22 (75,86%) presentó evidencias de plantación y 2 (24,14%) no se registra indicios de plantación. Los predios evaluados en las parroquias Santiago de Quito y Compud fueron consideraron para la reforestación. Palabras clave: restauración forestal, inventario, biodiversidad, reforestación.

scholarly journals COMPARISON OF UAV LIDAR AND IMAGERY FOR BEACH MONITORING

2019 ◽  
Vol XLII-2/W13 ◽  
pp. 589-596 ◽  
Author(s):  
L. Shaw ◽  
P. Helmholz ◽  
D. Belton ◽  
N. Addy
Keyword(s):  
Western Australia ◽  
Ground Surface ◽  
Ground Control ◽  
Control Points ◽  
Positive Bias ◽  
Coastal Change ◽  
Lidar System ◽  
Ground Control Points ◽  
Weather Events

<p><strong>Abstract.</strong> With recent advancements in UAV based technology the use of airborne photogrammetry and LiDAR poses a new and effective approach for continuous, fast and efficient beach monitoring surveys. This paper aims to compare three platforms (a DJI Phantom Pro 4 using Ground Control Points, a DJI Matrice 200 with built in PPK allowing direct georeferencing and a DJI Matrice 600 with a Riegl Mini-VUX LiDAR system) in order to assess if they enable beach surveys to be performed efficiently, accurately and cost- effectively. A series of beach surveys were performed over a period of 6 months enabling the ability of each UAV surveying technique to be assessed for the identification and evaluation of trends in the changing topography of beaches and shorelines. The study area (Warnbro Sound, Western Australia) is an area that has experienced significant coastal change over the last 20 years as well as several serious weather events in the course of this research. The results show a significant positive bias of a consistent vertical offset to the ground surface by 4&amp;ndash;9&amp;thinsp;cm between the two image based systems in comparison to the LiDAR system. Although these height offsets are significant it is still within the accuracy required to perform successful beach surveys, and all systems were able to quantify the change of the beach shoreline in area (m<sup>2</sup>) and volume (m<sup>3</sup>).</p>

scholarly journals Application del enfoque y control de procesos en la reducción de la mortalidad de nauplios y postlarvas de camarón en un laboratorio de producción

ECA Sinergia ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 129
Author(s):  
Ramón Antonio Zambrano Mero ◽  
Grether Lucía Real Pérez ◽  
José Raúl Quimis Reyes ◽  
Argelio Antonio Hidalgo Avila
Keyword(s):  
Return On Investment ◽  
Hazard Analysis ◽  
Electrical Energy ◽  
Rate Of Return ◽  
Control Points ◽  
Economic Study ◽  
Critical Control Points ◽  
Palabras Clave ◽  
One Year ◽  
Benefit Cost

  Las actividades realizadas en los laboratorios de producción de nauplios y poslarvas son el comienzo de la producción de camarón, donde el control de procesos es esencial para los resultados productivos deseados. La investigación se realizó en un laboratorio de producción la parroquia Canoa, provincia de Manabí, con el objetivo de establecer el control de procesos para incrementar los resultados productivos. Se aplica el método: Análisis de Peligros y Puntos Críticos de Control (APPCC). Los resultados obtenidos demuestran que existen factores que no han sido controlados: la temperatura del agua, la energía eléctrica, la presencia de hongos, bacterias, mohos que son PCC en el proceso; su control puede incrementar la supervivencia en un 20 % de la situación actual. El estudio económico en la propuesta realizada arroja un beneficio/costo de 1.97, una tasa de retorno de la inversión de menos de un año, considerándose aceptable el proyecto.   Palabras clave: Método APPCC, riesgo, producción, productividad, camarón   ABSTRACT The activities carried out in the production laboratories of nauplii and postlarvae are the beginning of the production of shrimp, where the control of processes is essential for the desired productive results. The investigation was carried out in a production laboratory in the Canoa parish, province of Manabí, with the objective of establishing process control to increase the productive results. The method is applied: Hazard Analysis and Critical Control Points (HACCP). The results obtained show that there are factors that have not been controlled: the temperature of the water, the electrical energy, the presence of fungi, bacteria, molds that are PCC in the process; its control can increase survival by 20% of the current situation. The economic study in the proposal produced a benefit / cost of 1.97, a rate of return on investment of less than one year, considering the project acceptable.   Key words: HACCP method, risk, production, productivity, shrimp

scholarly journals Advantages of laser scanning systems for topographical surveys in roads engineering

2016 ◽  
Vol 11 (2) ◽  
pp. 153-159 ◽  
Author(s):  
Vladislovas Česlovas Aksamitauskas ◽  
Vilma Kriaučiūnaitė-Neklejonovienė ◽  
Donatas Rekus ◽  
Birutė Ruzgienė ◽  
Virgaudas Puodžiukas ◽  
...  
Keyword(s):  
Rural Areas ◽  
Laser Scanning ◽  
Real Life ◽  
Ground Surface ◽  
Scanning System ◽  
Control Points ◽  
Processing Level ◽  
Technological Characteristics ◽  
Laser Scanning System ◽  
Scanning Systems

The objective of the work is to assess the advantages of the laser scanning system in the topographical surveys. The analysis and assessment of two methods, the classical total station method and mobile laser scanning are presented in the article. The results of the performed investigations have been compared, the technological characteristics and accuracy of the investigations have been presented, as well as the procedure of the topographic image formation, possibilities and efficiency have been assessed. The real-life topographic survey’s projects on the analysis of roads and streets (components) have been used where the ground surface, the components of the roads and the surrounding objects have been analysed. The analysis provides information on the availability and potential of the investigated methods and the final attained accuracy due to a certain number of the control points. The obtained results indicate that the main differences of the methods revealed when compiling the topographical images for urban or rural areas are the speed of measurements and data processing, level of detail of the results and various possibilities of the method implementation.

scholarly journals Trade-Offs Analysis of Ecosystem Services for the Grain for Green Program: Informing Reforestation Decisions in a Mountainous Headwater Region, Northeast China

2020 ◽  
Vol 12 (11) ◽  
pp. 4762
Author(s):  
Xiufen Li ◽  
Yichen Tian ◽  
Tian Gao ◽  
Lei Jin ◽  
Shuangtian Li ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Water Purification ◽  
Forest Restoration ◽  
Flood Mitigation ◽  
Grain For Green ◽  
Grain For Green Program ◽  
Regulating Services ◽  
Trade Offs ◽  
Soil Retention ◽  
Reforestation Program

The effects of forest restoration on ecosystem services and their trade-offs are increasingly discussed by environmental managers and ecologists, but few demonstrations have analyzed ecosystem service trade-offs with a view to informing afforestation choices. Here, we examined how the Grain for Green Program (GGP), an ambitious reforestation program in China, affected ecosystem services. We quantified regulating services and provisioning service in the potential scenarios, which were developed to improve ecosystem services better. The results indicated the GGP drove 14.5% of land-use/land-cover from 2000 to 2015, and all the regulating services increased. Prioritizing reforestations in steep-sloped and riparian farmlands can promote flood mitigation, water purification, and soil retention services by 62.7%, 25.5%, and 216.1% as compared with 2015 levels, respectively, suggesting that the improvements strongly depend on afforestation locations. Driven by the new GGP policy, a high proportion of economic forest increased provisioning service (272.2%), but at the expense of decreases in soil retention (−25.1%), flood mitigation (−11.4%), water purification (−36.6%), and carbon storage (−48.5%). We identified a suitable scenario that would reduce the trade-offs, which associated with afforestation types and their spatial allocation. Identifying priority areas of afforestation types can inform the GGP policy to assure sustainable and broader benefits.

Practical Realization of a Reference System for Earth Dynamics by Satellite Methods

1975 ◽  
Vol 26 ◽  
pp. 341-380 ◽  
Author(s):  
R. J. Anderle ◽  
M. C. Tanenbaum
Keyword(s):  
Reference Frame ◽  
Polar Motion ◽  
Pole Position ◽  
Control Points ◽  
Significant Information ◽  
Crustal Motion ◽  
Average Reference ◽  
Future Data ◽  
Existing Data

AbstractObservations of artificial earth satellites provide a means of establishing an.origin, orientation, scale and control points for a coordinate system. Neither existing data nor future data are likely to provide significant information on the .001 angle between the axis of angular momentum and axis of rotation. Existing data have provided data to about .01 accuracy on the pole position and to possibly a meter on the origin of the system and for control points. The longitude origin is essentially arbitrary. While these accuracies permit acquisition of useful data on tides and polar motion through dynamio analyses, they are inadequate for determination of crustal motion or significant improvement in polar motion. The limitations arise from gravity, drag and radiation forces on the satellites as well as from instrument errors. Improvements in laser equipment and the launch of the dense LAGEOS satellite in an orbit high enough to suppress significant gravity and drag errors will permit determination of crustal motion and more accurate, higher frequency, polar motion. However, the reference frame for the results is likely to be an average reference frame defined by the observing stations, resulting in significant corrections to be determined for effects of changes in station configuration and data losses.

Sign in / Sign up

Export Citation Format

Share Document