Search or add a thesis

Advanced Search (Beta)
Home > A Pedological Study and its Relationship to Halophytic Plants Along Coastal and Inland Areas of Karachi, Pakistan

A Pedological Study and its Relationship to Halophytic Plants Along Coastal and Inland Areas of Karachi, Pakistan

Thesis Info

Access Option

External Link

Author

Noor, Noreen

Program

PhD

Institute

University of Karachi

City

Karachi

Province

Sindh

Country

Pakistan

Thesis Completing Year

2018

Thesis Completion Status

Completed

Subject

Environmental Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/11633/1/Noreen%20Noor_Env%20Sci_2018_UoK_PRR.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676724422848

Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

Similar


The present study explores the elemental concentrations (and their ratios) in halophytes and their associated soils. The elemental composition of rocks have also been evaluated in this research to find out the influence of rock on the composition of soils. The study area embraces a coastal strip of the southwestern border of Karachi–a part of Sindh coast, located in the southern part of Pakistan. The results of the coastal site were compared with the findings of the inland site which was located in Karachi University campus. The coastal lithological units of Nari and Gaj formations showed a distinct influence on the chemical composition of soils over which the halophytes grow. The geochemistry, petrography and X–ray diffraction analyses of the rock samples revealed that most likely the sands, clay minerals, Fe, K, Ca and Mg in the soils were attributed from the coastal lithologies of the aforementioned formations. However, Na and Cl ions in the coastal soils were mainly contributed from the sea (revealed through both SEM-EDS and wet chemical analyses). A Significant negative correlation between sand and chloride (Cl−) content in both inland and coastal soils revealed that as expected sands do not possess cation exchange capacity. However, clays showed a strong positive correlation with exchangeable Na compared with other cations (K, Ca and Mg) in coastal soils. The soil’s pH represented negative correlation with electrical conductivity (EC) and chloride (Cl−) in both types of soils. The inorganic cations (Na, K, Ca and Mg) were accumulated in different amounts in plant parts (roots, stems and leaves) of the selected halophytes. Both inland and coastal populations of Atriplex griffithii, Haloxylon recurvum, Salsola imbricata and Suaeda fruticosa while coastal populations of Avicennia marina, Cyperus conglomeratus, Ipomoea pes-caprae, Tamarix indica, Trianthema triquetra showed an increase in Na from roots to stems to leaves. Most of these aforementioned halophytes displayed decrease in K and Ca concentrations from roots to stems to leaves as the Na amount increased. Generally, the roots of both inland and coastal halophytes displayed Ca > Na > K > Mg accumulation, whereas, stems and leaves exhibited Na > Ca > K > Mg sequence for both types of populations. The mutual interaction between Na, K, Ca and Mg in soils and in roots, stems and leaves of xvi halophytes showed interesting results. The coastal soils represented a strong positive relationship between Na vs. K and Na vs. Ca. Plant parts (roots, stems and leaves) revealed positive correlations between Na vs. K and negative correlations between Na vs. Ca in majority of the halophytes. The results of principal component analysis (PCA) for inland soil variables revealed that presumably Cl−, Na, and Mg ions were responsible for soil salinity at inland site. The NO3–N concentration in inland soil samples showed positive correlation with K in the second component which might be due to sewage influx in inland soils. The positively related Ca and SO4 in third component were possibly due to gypsiferous shale from Mulri hills exposed opposite to the inland site (the University of Karachi Campus area). The PCA of coastal soils represented high positive loads of Ca and Mg in the first component which indicated the influence of calcareous rocks of Nari and Gaj formations. The second component followed available P > SO4 > K > Cl > Na trend, whereas, the third component showed a high positive load for NO3–N while negative load for Cl ions. On the basis of bioconcentration factor (BCF) for Na (BCFNa), inland populations of Cressa cretica, Haloxylon recurvum and Suaeda fruticosa while coastal populations of Arthrocnemum macrostachyum and Trianthema triquetra were more salt tolerant halophytes. However, inland populations of Atriplex griffithii while coastal populations of Heliotropium currassavicum and Trianthema portulacastrum were relatively less salt tolerant halophytes; these plants possessed the more bioconcentration factor for K (BCFK). The results of cluster analysis were found to be congruent with the results of bioconcentration factor (BCF) of elements. Two Factor ANOVA (Analysis of Variance) revealed that Na content for plant parts and species differed markedly for both inland and coastal data across all stations. Magnesium amount represented remarkable differences for species and interactions (parts × species) for all inland and coastal stations. Through one-way MANOVA (multivariate analysis of variance) it was found that inland and coastal populations of Atriplex griffithii, Ipomoea pes-caprae exhibited significant difference in the accrual of all elements (Na, K, Ca and Mg). However, both populations of Salsola imbricata and Suaeda fruticosa possessed strong significant effect of parts on the accumulation xvii of Na, K, and Ca. Among micronutrients (Cu, Fe, Mn and Zn), Cu and Zn were deficient while Fe and Mn were ample in almost all soils. However, the concentrations of these micronutrients were found to be greater in inland plants than coastal populations. Coastal populations represented increasing trends for Cu and Fe from roots to stems to leaves.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

پروفیسر عبدالمغنی

پروفیسر عبدالمغنی کی رحلت
۵؍ ستمبر کو اردو کے ممتاز ادیب و نقاد پروفیسر عبدالمغنی اپنے مالک حقیقی سے جاملے، ان کے دماغ پر فالج کا حملہ ہوا تھا، علاج کے لیے پٹنہ کے ایک اسپتال میں داخل کیے گئے تھے، وہیں صبح سات بجے داعی اجل کا پیغام آگیا، اناﷲ وانا الیہ راجعون۔
وہ صوبہ بہار کے ضلع اورنگ آباد کے ایک دینی گھر انے میں ۴؍ جنوری ۱۹۳۶؁ء کو پیدا ہوئے تھے، ان کے والد ماجد مولانا عبدالرؤف اورنگ آبادی ندوی ایک ممتاز عالم تھے جن کے مضامین معارف میں چھپتے تھے اور ایک بھائی پروفیسر اقبال حسین مظفرپور یونیورسٹی کے شعبہ اردو کے صدر رہ چکے ہیں، عبدالمغنی صاحب نے ابتدائی تعلیم اورنگ آباد کے مدرسہ اسلامیہ میں حاصل کی تھی اور یہیں غالباً انہوں نے قرآن مجید بھی حفظ کیا تھا، عربی درسیات کی تکمیل مدرسہ شمس الہدیٰ پٹنہ میں کی تھی، پھر جدید تعلیم کے لیے انگریزی اسکولوں اور کالجوں کا رخ کیا، فراغت کے بعد پٹنہ یونیورسٹی کے کسی کالج میں انگریزی کے استاد ہوگئے، وہ ایک اچھے اور نیک نام استاد تھے، انگریزی میں چند کتابیں بھی لکھیں مگر ان کی اصل تصنیفی زبان اردو تھی، ان کا شمار اردو کے زود نویس اہل قلم اور مصنفین میں ہوتا ہے وہ قلم برداشتہ لکھتے تھے۔
مرحوم کو اپنی مادری زبان اردو سے عشق تھا، علاوہ کثرت تصنیف کے وہ اردو تحریک کے بڑے سرگرم مجاہد بلکہ بہار میں اردو تحریک کے صف اول کے قائد تھے اور مدت دراز تک انجمن ترقی اردو کی بہار شاخ کے صدر تھے، ان کی عملی قوت اور تنظیمی صلاحیت نے بہار کی انجمن ترقی اردو کو بہت متحرک و فعال اور دوسری ریاستی انجمنوں سے زیادہ کارگزار بنا دیا تھا، عبدالمغنی صاحب کی سعی و جاں فشانی سے ۱۹۸۰؁ء میں سب سے پہلے...

Mīthāq Al-Madīnah: A Universal Charter of Peace an Analytical Study in the Modern Socio-Political Context

Different religious, political and social leaders tried their best to establish peace and prosperity in the society in different phases of the human history. An influential effort out of these efforts is that of the Prophet (r) Muḥammad. The Prophet (r) faced a pluralistic society of different faiths and religions in Madīnah. So, to make a better relationship and establish peace between the Muslims and the other communities of Madīnah, an agreement, which is called Mīthāq al-Madīnah, was made. Mīthāq al-Madīnah was not only a deed, but it presents all those principles and regulations, which were mandatory for peace building in a state or society. The excellent aspect of this charter is that the recipients of this charter were not the Muslims only, but a pluralistic society of different faiths. These communities were bound to establish peace with an agreement. This charter is an excellent model of peace, prosperity, freedom and human rights. According to this charter, all the parties were free with their religious beliefs and social interests. It was also the constitution of Madīnah. The renowned Muslim scholars are unanimously agreed that it was the first written constitution of the world. This agreement provides all other communities of Madīnah (the Jews, the Christians, and the polytheists) equal rights and freedom. Consequently, the charter of Madīnah can become a base for enduring peace and peaceful coexistence in a pluralistic world for the sake of the welfare of the human beings.

Exploring the Differences in Chemistry Achievements of Secondary School Students Across School System and Gender in Quetta, Pakistan

This study aimed to explore academic achievements of secondary school students in Chemistry across schools systems and gender. A newly developed and validated instrument - Chemistry Achievement Test (CAT)-was used for collection of the data. CAT comprised 35 items (25 multiple response questions and 10 constructed response questions). CAT encompassed four content domains of Chemistry; fundamental chemistry, physical state and particulate structure of matter, periodic table and periodicity of elements, and acids, bases & solutions, extracted from National curriculum for secondary classes. Furthermore, items were categorized on three cognitive domains; knowledge, application, and reasoning. CAT was administered to 374 grade 10 students who were randomly selected from public (n=6) and private (n=6) schools of Quetta, Pakistan. A total of 190 (50.8%) boys and 184 (49.2%) girls participated in the research study.Results demonstrated that the students scored only 30% of the total score exhibiting a weak conceptual understanding in the selected concepts of chemistry. Comparison across school systems favored private school students (p<0.01). Of the four content domains students from private schools have performed significantly better than students from public schools in physical state and particulate structure of matter (p<0.001). Of the three cognitive domains students from private schools performed significantly better than students from public schools in reasoning (p<0.01).Furthermore, gender comparison depicted that girls outperformed their boys counterparts (p<0.001). Of the four content domains girls performed significantly better (p<0.001 for all three) than boys in three content domains except periodic table and periodicity of elements. Of the three cognitive domains the girls performed significantly better than the boys (p<0.001 for all three).Using CAT students' conceptual understanding can be explored as well as their corresponding teachers which might lead to enable researchers to find out the impact of teachers' conceptual understanding in students achievement in Chemistry.The study also generates opportunities for further research in the area of students’ learning outcomes in secondary schools.