Assessment of Land-Use/Land-Cover Change and Forest Fragmentation in the Garhwal Himalayan Region of India

Batar, Amit Kumar; Watanabe, Teiji; Kumar, Ajay

doi:10.3390/environments4020034

Cited by 89 publications

(76 citation statements)

References 45 publications

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“…Accuracy assessment is a prerequisite step in the LULC classification process. This aims to quantitatively determine how effectively pixels are grouped into the correct feature classes in the area under investigation [31]. Accuracy assessment, therefore, compares the classified results to geographically referenced data that are presumed to be true.…”

Section: Accuracy Assessmentmentioning

confidence: 99%

An Analysis of Urban Land Use/Land Cover Changes in Blantyre City, Southern Malawi (1994–2018)

2020

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Rapid and unplanned urban growth has adverse environmental and social consequences. This is prominent in sub-Saharan Africa where the urbanisation rate is high and characterised by the proliferation of informal settlements. It is, therefore, crucial that urban land use/land cover (LULC) changes be investigated in order to enhance effective planning and sustainable growth. In this paper, the spatial and temporal LULC changes in Blantyre city were studied using the integration of remotely sensed Landsat imageries of 1994, 2007 and 2018, and a geographic information system (GIS). The supervised classification method using the support vector machine algorithm was applied to generate the LULC maps. The study also analysed the transition matrices derived from the classified map to identify prominent processes of changes for planning prioritisation. The results showed that the built-up class, which included urban structures such as residential, industrial, commercial and public installations, increased in the 24-year study period. On the contrary, bare land, which included vacant lands, open spaces with little or no vegetation, hilly clear-cut areas and other fallow land, declined over the study period. This was also the case with the vegetation class (i.e., forests, parks, permanent tree-covered areas and shrubs). The post-classification results revealed that the LULC changes during the second period (2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018) were faster compared to the first period (1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007). Furthermore, the results revealed that the increase in built-up areas systematically targeted the bare land and avoided the vegetated areas, and that the vegetated areas were systematically cleared to bare land during the study period . The findings of this study have revealed the pressure of human activities on the land and natural environment in Blantyre and provided the basis for sustainable urban planning and development in Blantyre city.

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Section: Accuracy Assessmentmentioning

confidence: 99%

An Analysis of Urban Land Use/Land Cover Changes in Blantyre City, Southern Malawi (1994–2018)

2020

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“…The areas occupied by different classes represent the quality (fragmented class) and quantity (total forest area) assessment of the forest in the studied area (Farhadur 2016). The edge width indicates the distance over which non-forest land covers can degrade forest land covers (Farhadur 2016, Batar et al 2017. The specific edge width of 100 m was selected, as it is often used as a general edge width (Vogt et al 2007, Batar, Watanabe and Kumar 2017, Boro, Choudhury and Sharma 2017.…”

Section: Forest Fragmentation Assessmentmentioning

confidence: 99%

“…Forest fragmentation is associated with deforestation (Batar et al 2017). Forest loss refers only to the conversion of forested land to other land uses, but forest fragmentation occurs when a large region of forest is broken down, or fragmented, into a collection of smaller patches of forest habitat (Collingham and Huntley 2000, Fahrig 2010, Batar et al 2017, Ramachandran et al 2018. Forest loss is most detrimental in an already-fragmented landscape (Betts et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Deforestation and forest fragmentation in and around Endau-Rompin National Park, Peninsular Malaysia

Foo

Numata

2019

Tropics

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Protected areas (PAs) are crucial for conserving biodiversity, but there is controversy over whether they effectively reduce deforestation because, for many of the PAs evaluated to date, pressure from deforestation occurred both inside the PAs and in the areas surroundings them. This is especially the case for tropical PAs in Southeast Asia. We examined the impact of a protected area on tropical rainforests inside and surrounding Endau-Rompin National Park (ERNP) in southern Peninsular Malaysia by mapping and analyzing forest cover changes and fragmentation between 1992 and 2016. The results showed that the forests inside ERNP were well protected, but greater forest loss and fragmentation were found surrounding ERNP, especially beyond the 10-km buffer zone of the park, due to large-scale agricultural land conversion, particularly for oil palm plantation. The deforestation rate in areas surrounding PAs in the region increased from 250 ha yr 1 during 1992-2007 to 1,700 ha yr 1 during 2012-2016. In the buffer zone (BZ), the deforestation rate was extremely high during 2007-2012 at 1,800 ha yr 1 , but decreased to 440 ha yr 1 during 2012-2016. This suggests that in this region, PAs might be ineffective against deforestation in their surrounding areas. Continual deforestation and fragmentation are expected to occur surrounding ERNP, threatening its protected boundary. These activities may reduce the effectiveness of ERNP for wildlife habitat conservation.

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“…Using remote sensing techniques, LULC changes are mapped by detecting the differences in the satellite's images of different periods with appropriate change detection methods [9-11, 13, 16]. The overview and the repeatability satellite remote sensing can provide timely, accurate and consistent information about earth's surface for cost-and time-efficient monitoring for environmental changes [70][71][72]. This information is critical to the management of natural resources, the conservation of ecosystems and biodiversity as well as decision support for sustainable development [21].…”

Section: Land Use Land Cover Change Detectionmentioning

confidence: 99%

Using Remote Sensing Technics for Land Use Land Cover Changes Analyses from 1950s to 2000s in Somone Tropical Coastal Lagoon, Senegal

Barry¹,

Ndiaye²,

Hauhouot³

et al. 2019

AJRS

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In many developing countries, some natural areas are faced with gaps in appropriate map coverage mainly on land use and land cover (LULC) changes. This situation makes it difficult to plan and implement natural environmental protection and natural resource management programs. Remote sensing and geographic information systems (GIS) are excellent tools for mapping LULC changes. This study investigated LULC changes in 'Somone' coastal lagoon in Senegal using multisource remote sensed data. Data sets included aerial photographs recorded in March 1954, and February 1978, as well as satellite images recorded in February 2003 and April 2016. All images were geometrically corrected and segmented. Photos and/or images interpretations were made with the aid of computer and post-classification change detection technique was applied to classify multisource data and to map changes. Stratified sampling was used to assess all classification results.

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Assessment of Land-Use/Land-Cover Change and Forest Fragmentation in the Garhwal Himalayan Region of India

Cited by 89 publications

References 45 publications

An Analysis of Urban Land Use/Land Cover Changes in Blantyre City, Southern Malawi (1994–2018)

An Analysis of Urban Land Use/Land Cover Changes in Blantyre City, Southern Malawi (1994–2018)

Deforestation and forest fragmentation in and around Endau-Rompin National Park, Peninsular Malaysia

Using Remote Sensing Technics for Land Use Land Cover Changes Analyses from 1950s to 2000s in Somone Tropical Coastal Lagoon, Senegal

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