TY  - JOUR
T1  - The Rerelationship Between Climatic Elements and Vegetation Cover in
Adamawa State, Nigeria
AU - Mohammed, I. AU - Abubakar, I.M. 
JO  - Agricultural Journal
VL  - 14
IS  - 5
SP  - 94
EP  - 103
PY  - 2019
DA  - 2001/08/19
SN  - 1816-9155
DO  - aj.2019.94.103
UR  - https://makhillpublications.co/view-article.php?doi=aj.2019.94.103
KW  - Trend
KW  -effect
KW  -climatic elements
KW  -NDVI
KW  -Adamawa state
AB  - The study investigated the trend of climatic elements and its effect on vegetation cover in Adamawa
state from 1988-2017. Pearson correlation coefficient was used to check the strength of relations between NDVI
and the related climate elements (i.e., temperature, precipitation, relative humidity and sunshine hours) and
regression analysis was further used to identify the effectiveness of each climate elements on vegetation cover.
The result indicated that NDVI had a positive correlation with precipitation and temperature (p = 0.672) in Yola
and Gyawana for three decades, followed with marginal negative correlation (p = 0.000) in the last three
decades. Ganye in the same period had slightly stable precipitation with positive correlation (p = 0.005) while
Mubi recorded remarkable decreased of precipitation slightly negative correlation (p = 0.109) but a slightly
negative correlation with relative humidity and sunshine hours at Yala (p = 0.129), Gyawana (p = 0.015) and
Ganye. Evaporation and temperature shows similar negative correlation in both study sites Yala (0.768; 0.129
0.263), Gyawana (0.015) and Ganye. Annual maximum temperature had noticeable increased during the study
period in both study sites 2003 was recorded highest 43°C while 2000 was recorded lowest 31°C with no
significant correlation in Yola (p = 0.201). Precipitation and temperature trend exhibited a positive slope of the
model line indicating overall increased in precipitation and temperature with time in Yola, Gyawana and Ganye
with positive relationship with NDVI (p = 0.672; 0.000; 0.005) while Mubi recorded remarkable decreased
with negative relationship (p = 0.109). Evaporation, sun shine and relative humidity shows similar negative
trend with low relationship in Yola and Mubi while sun shine trend increases in Ganye and relative humidity
in Gyawana; it is concluded that based on the close relationship between NDVI and the major climate elements
(Precipitation and Temperature) revealed in this studies, further investigations became necessary to investigate
the vegetation dynamic responses to changes in the two major climate variables and establish quantitative
relations between them.
ER  -