The amphibious snail Oncomelania hupensis(O. hupensis) is the only intermediate host of Schistosomiasis japonica, which is a parasitic disease of considerable public health and economic significance. The survival of O. hupensis is governed by climatic and environmental factors, including vegetation, temperature, soil type and water level, etc. In this study, the environmental factors were deriv...

The knowledge of evapotranspiration is of great interest in many applications such as assessing irrigation water use. In this paper, a methodology is presented to estimate evapotranspiration using the surface energy balance model S-SEBI (Simplified Surface Energy Balance Index) and the evaporative fraction. The method is applicable under the assumptions of constant atmospheric conditions and su...

To enhance the vegetation signal in remotely sensed data and provide an approximate measure of live green vegetation, a number of spectral vegetation indices have been developed to estimate biophysical parameters of vegetation. The sensitivity of the normalized difference vegetation index (NDVI) to the soil background and atmospheric effects has generated an increasing interest in the developme...

This work proposes a particular approach to assess information about soil degradation from NOAA/AVHRR data. As erosive processes change physical and chemical properties of the soil, altering, consequently, the superficial color, monitoring the change in color over time can help to identify and analyze those processes. A methodology for the determination of soil color from NOAA/AVHRR data was de...

High-throughput phenotyping (HTP) using vegetation indices (VIs) is an important data source for managing plant breeding programs and can be a promising tool in indirect selection. This study hypothesized that VIs are correlated with agronomic traits corn, therefore, HTP auxiliary selecting superior genotypes. The objectives were: i) to analyze the association between VIs, ii) identify corn hyb...

UAV and hemispherical photography are common methods used in canopy density measurement. These two have opposite viewing angles where measures upwardly, while captures images downwardly. This study aims to analyze compare both be as the input data for estimation when linked with a lower spatial resolution of remote sensing i.e. Landsat image. We correlated field vegetation indices (NDVI, MSAVI,...

The Ordos Plateau, a typical semi-arid area in northern China, has experienced severe wind erosion events that have stripped the agriculturally important finer fraction of the topsoil and caused dust events that often impact the air quality in northern China and the surrounding regions. Both climate change and human activities have been considered key factors in the desertification process. Thi...

This study develops a cartographic index of forest stands vigour from Ikonos imagery data. The study area located at GOUNAMITZ (New-Brunswick, Canada) consists mainly of fir, tolerant and intolerant hardwoods at mature and overmature stages. Forest inventory plots were set up in the stands; dendrometric measures (height, DBH, annual increment, etc.) were collected and used to estimate reference...

Climate change, as well the appearance of pests and diseases, are affecting olive plantations (Olea europaea L.) production olives in world, therefore, there is an urgent need for tools to help us identify spatial temporal evolution groves, regarding attack pests, this case, Orthezia olivicola borer Phloeotribus scarabaeoides. In work, we use information from freely available satellite images t...

Dünya nüfusunun artmasına paralel olarak tarım alanlarına olan ihtiyaç da artmaktadır. Son yıllarda alanlarının ve bitki gelişiminin izlenmesi için geleneksel modern yöntemler sıklıkla kullanılmaktadır. Bu çalışmada çok zamanlı uydu görüntülerinden elde edilen örtüsü indeksleri yardımıyla buğday bitkisinin fenolojik evreleri incelenmiş ile verim değerleri kullanılarak tahmin modeli geliştirilmi...