Karst of Gunung Sewu Land Use and Land Covers Dynamics: Spatio-Temporal Analysis

Abstract

A study of karst land use and land cover dynamics is critical for managing karst areas, which provide many pivotal services for people. This study aims to study such dynamics, especially in relation to the karst of Gunung Sewu, due to its development as a new emerging sector. Using a mixed methods approach, the study combines spatial data analysis with qualitative analysis. Spatial analysis was performed to examine the dynamic of the land cover derived from 2013 and 2021 Landsat 8 imagery, analyzed with the Google Earth Engine tool, together with analysis of spatial patterns using Global Moran’s I and LISA. The spatial analysis results were complemented by a qualitative analysis of the environmental history and development trends, as an explanatory method. The land cover analysis reveals a conversion from vegetation to agriculture, while the spatial pattern analysis shows that such conversion has mostly taken place in the northern part of the study area of Wonosari Basin. The environmental history of teak forest exploitation and agriculture is key to understanding current land use related to the emerging tourism sector, which is fundamental to the region. To manage the negative impacts, sustainable land use with a firm policy framework urgently needs to be implemented.

The study of soil organic carbon rate in Gunungsewu Karst Area, Pracimantoro District

“…Homogenic forest has the highest SOC rate at around 2.6% (medium class). According to Diah Auliyani [14] who mentions that "a pioneer such as Acacia mangium is expected to improve the physical, chemical and biological properties of the soil". Dry land seasonal crops (moor) have the lowest rate at around 1,595% (low class), shrubland has a value of around 2.010% (medium), and rainfed paddy at around 1.895% (low class).…”

“…Interaction between the biotic, abiotic, and also cultural elements causes the occurrence of the process of carbon transfer and storage [11,12]. The continued of population growth tends to utilise the vulnerable landslide as agricultural land [13,14]. Therefore, is important to measure the soil organic carbon stock for each land use so that it can be used as a reference for decision-making in the context of mitigation climate disasters.…”

Land Conversion Analysis in Buleleng District, Bali: An Outlook for Sustainable Tourism Development

“…However, we also encountered a technical problem with our imagery where the 2017 image contains cloud features and its shadow where these features could have influenced the interpretation. Thus, cloud samples were also inserted in SCP classification training [21]. To obtain the spatial context of the image, we used base map features from RBI Map collected from Ina Geoportal.…”

“…To obtain the accuracy of our interpretation, we used Kappa index calculation as a type of matrice that measures the levels of observer agreement in making categorical assessments and Overall Classification Accuracy (OCA) [21]. We also employed the calculation of User Accuracy (UA) and Producer Accuracy (PA) to obtain the accuracy.…”

Spatial Analysis of LULC Changes and Suitability of Ngawi Regency on Spatial Regional Planning 2011-2031 Using Geographic Information System

“…If changes in land use occur, the facts on the ground match what the local government plans. LULC is a result of human activity in adapting and altering their surroundings to satisfy their needs, making it one of the fundamental aspects of resource utilization and environmental management, ultimately involving regional development activities [17]. The current level of land use can be ascertained in terms of its level of conformity with what has been planned in the Regional Spatial Plan, and it is also necessary to know its relationship with the Regional Medium Term Development Plan.…”