Land-Use and Land-Cover Changes in Dong Trieu District, Vietnam, during Past Two Decades and Their Driving Forces

Thi-Thu Vu,Yuan Shen

doi:10.3390/land10080798

Abstract

Land-use and land-cover (LULC) change analyses are useful in understanding the changes in our living environments and their driving factors. Modeling changes of LULC in the future, together with the driving factors derived through analyzing the trends of past LULC changes, bring the opportunity to assess and orientate the current and future land-use policies. As the entryway of Quang Ninh province, Vietnam, Dong Trieu locale has experienced significant LULC changes during the past two decades. In this study, the spatial distribution of six Level I LULC classes, forest, cropland, orchards, waterbody, built-up, and barren land, in Dong Trieu district at 2000, 2010, and 2019 were obtained from Landsat imageries by maximum likelihood technique. The most significant changes observed over the past twenty years are a decrease of barren land (9.1%) and increases of built-up (8.1%) and orchards (6.8%). Driving factor analysis indicated that the changes of cropland and built-up were dependent on distance from road (DFR), distance from main road (DFMR), distance from urban (DFU), distance from water (DFW), elevation, slope, and population density. The changes of forest were dependent on all the driving forces listed above, except DFMR. The orchards mainly appeared near the high-population-density area. The transformation of the waterbody was affected by geography (elevation and slope) and population density. The higher the population density, the less barren the land would appear.

Highlights

In 2018, 55% of the total world populace lived in metropolitan areas
The Landsat archive, which is adequately consistent in imageries acquired from prior missions, permits us to evaluate long-term Land-use and land-cover (LULC) changes, either local or worldwide [6]
The spatial distribution of LULC classes identified through Landsat imageries acquired in 2000, 2010, and 2019 revealed significant LULC changes in the Dong Trieu district during the past two decades

Summary

Introduction

In 2018, 55% of the total world populace lived in metropolitan areas. Projections show that urbanization, with the increasing trend of the total populace, could add another2.5 billion individuals to metropolitan territories by 2050, with nearly 90% of this increment occurring in Asia and Africa [1]. In 2018, 55% of the total world populace lived in metropolitan areas. Projections show that urbanization, with the increasing trend of the total populace, could add another. Savannas, and steppes have already given way to agriculture to meet the demand for food and fiber of those metropolitan occupants [2]. The demand for food and fiber is expected to increase 68% by 2050 [1]. It is commonly used to investigate the effects and consequences of human-made interactions on natural environments by comparing landuse and land-cover (LULC) maps of the same geographic region produced from archived satellite imageries. The Landsat archive, which is adequately consistent in imageries acquired from prior missions, permits us to evaluate long-term LULC changes, either local or worldwide [6]. Parallelepiped, minimum distance, Mahalanobis distance, maximum likelihood, spectral angle mapper, 4.0/)

Objectives

Results

Conclusion