النباتات والتحليل الخضري لمنطقة أريحا
Date
2007
Authors
رامي صلاح مصطفى جفال
Rami Salah Mustafa Jaffal
Journal Title
Journal ISSN
Volume Title
Publisher
AL-Quds University
جامعة القدس
جامعة القدس
Abstract
iii
Abstract
The study area is about 22 km
2
located in the southern part
of Jericho district. The mean
annual precipitation in the study area is appr
oximately 200 mm/yr of which approximately
60% falls in the three months of December, January and February. The average maximum
temperature during coldest month and hot
test month are around 19 ºC and 38 ºC
respectively, while average minimum temperat
ures for the same months are around 7 ºC
and 22 ºC respectively.
This study aims to investigate the present status
of the plant diversity
and the flora of the
study area based on collecting,
describing, identifying, and lis
ting the plants species
growing their and the vegetation analysis for th
ose plant. According to
survey it is found
that there are 40 species in the study area
and those species belong to 22 families. The
result showed a predominance of the family
Compositeae which it self comprises (20 %),
with the number of (8) species, followed
by the family Chenopodiaceae which comprises
(10 %), with (4) species.
Based on chorotype the species in the study area
are classified into 12 categories. Analysis
of chorological spectrum of the collected
plant species showed a predominance of
Mediterranean species which comprises (17.5
%) with (7) species.
Mediterranean / Irano-
Turanean chorotype also has the same
percentage and number of species.
The collected plant species are classified accord
ing to their life forms into four types that
are Theophytes, Phanerophytes, Hemicryphytes,
and Chamaephytes. Analysis of biological
spectrum of the collected plant
species according to Runkiaer syst
em of life forms of plants
showed a predominance of Theophytes whic
h comprise (42.5 %) with (17) species,
followed by Phanerophytes which comprise (3
0 %) with (12) spec
ies. Therophytes have
greater capacity for growth than other life
forms, apparently because of their wider
ecological amplitude, greater plasticity in si
ze, and their small growth requirements.
It was estimated that the average
of species density ranged between (
0.097) and (
12.258)
plant/line
.
The highest
density was for
Malva parviflora
, followed by
Calendula palaestina
with density of (5.52) p/L, where as the least dense species was
Salvia dominca
.
Based on data analysis
it is estimated that the freque
ncy ranges betwee
n (5.65 – 66.13 %).
The most frequent species recorded is
Seidlitzia rosmarinus
, followed by
Atriplex halimus
with a frequent of (61.3 %), while
the least frequent species is
Salvia dominca
..
According to the data obtained from this
study, abundance ranges between (1.1 p/L) - (33
p/L). The most abundant species is
Malva parviflora
, followed by
Rostraria perythea
with
abundance of (22.2 p/L), while the le
ast abundant species recorded is
Prosopis juliflora
..
Description
Keywords
الدراسات البيئية , Environmental Studies