Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Pakistan → Assessment of Waterlogging Conditions in Semi-Arid Region and its Impact on the Growth of Selected Agroforestry Tree Species

University of Agriculture, Faisalabad. (2020)

Assessment of Waterlogging Conditions in Semi-Arid Region and its Impact on the Growth of Selected Agroforestry Tree Species

Shaheen, Hafiz Muhammad Furqan

Titre : Assessment of Waterlogging Conditions in Semi-Arid Region and its Impact on the Growth of Selected Agroforestry Tree Species

Auteur : Shaheen, Hafiz Muhammad Furqan

Université de soutenance : University of Agriculture, Faisalabad.

Grade : Doctor of Philosophy (PhD) in Forestry 2020

Résumé partiel
Waterlogging affects woody plants distribution as it not only restricts the seed germination but reproductive and vegetative growth, are also influenced by this issue that results in mortality of plants. It disturbs the soil physicochemical attributes that ultimately reduces the growth, physiological and biochemical characteristics of various trees species. Studies were performed to evaluate the waterlogged condition and its impact in semi-arid region of District Faisalabad and Nankana Sahib with prime objectives, 1) to assess the severity and extent of waterlogging in problematic areas, 2) to assess the waterlogging tolerance potential of different agroforestry tree species and 3) to examine the ameliorative effects of selective species on the physicochemical attributes of waterlogged soils. Field visits were carried out in three waterlogged sites : Satiana, Chak Jhumra and Sangla Hill of the selected Districts to collect the socioeconomic data through a validated questionnaire along with soil sampling at two depths : 0-15 cm and 15-30 cm to determine the physicochemical properties of soil under and away the tree canopies. The results indicated that most of the respondents from selected sites were middle aged with an education level of 8-10 years having <5 hectares of land holding with farming as major income source. The waterlogged soil in the study area ranged from 43% (Chak Jhumra) to 52% (Sangla Hill). Trees were planted linearly along the farm crops with Eucalyptus camaldulensis (28 trees ha-1 ), Populus deltoides (21 trees ha-1 ) and Dalbergia sissoo (13 trees ha-1 ) as major species with a maximum annual income of 16-25 (000) PKR’S. Majority of the respondents (43%-59%) were unaware about the launching of land reclamation projects in the study area and sites having land reclamation projects, 49% to 66% were disagreed about their effectiveness. There was no remarkable change in soil pH at both depths however, a slightly higher pH was estimated under canopy soils as compared to away canopy soils. Higher soil organic matter (0.85%), soil nitrogen (0.051%), potassium (151 mg kg-1 ), phosphorous (6.84 mg kg-1 ) and saturation percentage (47.5%) was computed in under canopy soils for Chak Jhumra as compared to other study sites at 0-15 depth. A research trial was conducted in the experimental area of Department of Forestry and Range Management, University of Agriculture, Faisalabad to determine the response of various tree saplings under waterlogged conditions. Different agroforestry tree species : Eucalyptus camaldulensis, Populus deltoides, Dalbergia sissoo, Salix tetraasperma and Syzygium cumini were selected and their growth and physiological attributes were measured under various waterlogging durations that were control (0 hours), 24, 48, 72 and 96 hours.

Présentation (Pakistan Research Repository)

Version intégrale (7,1 Mb)

Page publiée le 22 mai 2022