Vegetation Drought Vulnerability Mapping Using a Copula Model of Vegetation Index and Meteorological Drought Index
نویسندگان
چکیده
Since vegetation is closely related to a variety of hydrological factors, the condition during drought greatly affected by moisture supply or demand from atmosphere. However, since feedback between and climate in event very complex, it necessary construct joint probability distribution that can describe investigate interrelationships them. In other words, required understand interaction terms probability. this study, possibility stress experienced under various conditions occurring was investigated dividing into two aspects (atmospheric demand). Meteorological indices explain different vegetation-related indexes state were estimated using data remotely sensed satellites parts Far East Asia centered on South Korea. Bivariate modeling performed index meteorological Copula. It found relationship has regional characteristics there also seasonal change. From copula-based model, possible quantify conditional for scenarios occur causes. Through this, mapping vulnerability study area, spatially check how responds differently depending season The probabilistic may provide useful information establishing mitigation strategies ecological drought.
منابع مشابه
The effect of meteorological drought on vegetation dynamics in Iran
Drought as a complex ecosystem crisis can affect vegetation density and health. Iran with an arid and semi-arid climate is exposed to this phenomenon. Therefore, it is necessary to evaluate the effect of drought on vegetation. The purpose of this study is to evaluate the effect of meteorological drought on vegetation dynamics in Iran. In this regard, using MATLAB software, SPEI index with time ...
متن کاملDrought monitoring using deciles index standardized precipitation index and effective Drought index in tehran province iran
متن کامل
Drought Determination by Using Land Surface Temperature and Normalized Difference Vegetation Index
Today, many places of different locations on Earth especially semi-arid areas face the risk of desertification due to severe drought. However, the very basic data required for the analysis is unavailable for the regions without a meteorological station. In this case, land surface temperature (LST) is derived from a thermal band as an alternative meteorological station’s data. In this research, ...
متن کاملDrought Forecasting with Vegetation Temperature Condition Index Using ARIMA Models in the Guanzhong Plain
This paper works on the agricultural drought forecasting in the Guanzhong Plain of China using Autoregressive Integrated Moving Average (ARIMA) models based on the time series of drought monitoring results of Vegetation Temperature Condition Index (VTCI). About 90 VTCI images derived from Advanced Very High Resolution Radiometer (AVHRR) data were selected to develop the ARIMA models from the er...
متن کاملA forest vulnerability index based on drought and high temperatures
A forest vulnerability index based on drought and high temperatures" (2016). USDA Forest Service / UNL Faculty Publications. 321. a b s t r a c t a r t i c l e i n f o Increasing forest stress and tree mortality has been directly linked to combinations of drought and high temperatures. The climatic changes expected during the next decades – large increases in mean temperature, increased heat wa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Remote Sensing
سال: 2021
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs13245103