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

Titre : Physico chemical and bacterial profiling of soils in restored and unrestored areas of Chaksu Rajasthan

Auteur : Jain, Sonal

Université de soutenance : The IIS University

Grade : Doctor of Philosophy (PhD) 2017

Résumé
Many of the world’s ecosystem have undergone significant degradation with negative impact on biological diversity and human livelihood. Thus, timely and effective interventions for ecological restoration have to be made to reverse this degradation process, as it is necessary to maintain the status of ecosystem. The phenomenon of ecological restoration has also been observed in Chaksu Block, Jaipur district, Rajasthan, which was hit by flood in 1981 resulted into massive erosion of soil leaving the land unproductive which was later taken up for restoration by Forest Department with the local people. Moreover, indigenous cultural and ritual practices of the local people in sacred groves also provided a tool for conserving forest ecosystem. The joint efforts of the Government and Forest department resulted in increased green cover and improved soil quality. In addition soil fertility is also influenced by the presence of micro-organisms. By assessing the characteristic of soil micro-organism community, we can predict the status of the microbial ecosystem and in turn the quality of soil and the progress of restoration after degradation. In the present study we planned to analyze various physicochemical parameters of soils along with their microbial analysis. Soil samples were collected from restored (Experimental site) and unrestored (Control site) area of Thooniram Laxmanpura village of Chaksu Block. The soil parameters like Water Holing Capacity, Moisture Content, texture, pH, Electrical Conductivity, Organic Carbon, Organic Matter, Exchangeable Calcium and Magnesium, Available Sodium and Potassium, available Phosphorous and Total Nitrogen were analysed. The statistical comparison was done using the student t-test and results was found to be significant between the restored and unrestored soil samples. The results of the present study gives us an idea about the improved fertility of soil in the restored area which proves that the restoration measures adopted by the community people and Government were quiet effective. Hence such kind of practices should also be implemented to other villages.

Mots clés : Land degradation, ecological restoration, sacred groves, green cover, soil physico-chemical parameters, microbial analysis and soil quality.

Présentation et version intégrale (Shodhganga)