Agricultural land conversion and land surface temperature change in four industrial areas in Bangladesh: results from remote sensing and DPSIR approach.

Autor: Ahmed, Zia, Alam, Rafiul, Hussain, A H M Belayeth, Ambinakudige, Shrinidhi, Chowdhury, Tahmid Anam, Kabir, Md. Najmul, Nahin, Khadiza Tul Kobra, Ahmed, Mufti Nadimul Quamar
Zdroj: Arabian Journal of Geosciences; May2022, Vol. 15 Issue 10, p1-21, 21p
Abstrakt: This study reveals the scenarios and drivers of agricultural land conversion (ALC) and consequent changes in land surface temperature (LST) in four industrial areas in Bangladesh. We used remote sensing techniques to observe ALC and LST and the Driver-Pressure-State-Impact-Response (DPSIR) framework to identify major agricultural land conversion drivers. After remote sensing and field visits, DPSIR framework adopted a structured questionnaire survey to identify the perception of local respondents in identifying priorly obtained factors on a particular question. Based on the extent of industrialization, this study selected four industrial areas Gazipur Sadar, Kaliakair Upazila, Savar, and Rupganj. Analysis of Landsat TM and OIL time series data of 1999, 2009, and 2019 reveals that ALC continued to change sharply in Gazipur Sadar, Kaliakair Upazila, and Savar; the change was steady in the Rupganj area. Between 1999 and 2019, humans converted a total of 6097.14 hectares of agricultural land into the settlement. The conversion of agricultural land to barren land followed the same trend, but most noticeable in the Gazipur Sadar. The mean LST for different land use types was higher in the Gazipur Sadar and the Kaliakair Upazila than the Savar and Rupganj Upazila. Also, the mean LST in settlement and barren land areas is higher than in the areas with vegetation and water bodies. Notably, the land surface temperature is higher in the areas where conversions are quick. Approximately 71% of respondents reported that rapid industrial development is the main reason for agricultural land conversion. Moreover, many respondents (around 64%) also agreed that soil and water quality become degraded due to agricultural land conversion in their regions. Our prognosis is that if policymakers and planners do not consider these drivers, the potential impact will enhance soon. Overall, we believe that this study can help formulate effective agriculture land use and management policies of Bangladesh and other developing countries. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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