Impact of land-use change on soil erosion in the Coonoor Watershed, Nilgiris Mountain Range, Tamil Nadu, India

Saravanan, Subbarayan; Jennifer, Jesudasan Jacinth; Singh, Leelambar; Saranya, Thiyagarajan; Sivaranjani, Sankaralingam

doi:10.1007/s12517-021-06817-w

Cited by 20 publications

(9 citation statements)

References 51 publications

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“…The Southwest monsoon brings maximum rainfall and its average annual rainfall ranges between 1400 -2000 mm year -1 . Around 22% of the area in Conoor is under forest (Saravanan et al, 2021). The average annual temperature in summer ranges between 18°C to 28 °C and in winter it ranges between 0 to 16 °C.…”

Section: Field Description and Investigationmentioning

confidence: 99%

“…Findings from various studies have also revealed the inverse relationship between the concentration of soil carbon and LUC (Golchin et al, 1995). Connor a part of UNESCO's World heritage site has undergone a large-scale conversion of native forest land to cropland and tea plantation (Saravanan et al, 2021). The Conoor region in western ghats is highly vulnerable to landslides (Jaiswal et (Marble et al, 2016;Vanhala et al, 2016;Cha-un et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Unravelling the carbon pools and carbon stocks under different land uses of Conoor region in Western Ghats of India

Jagadesh

Selvi

Thiyageshwari

et al. 2022

JANS

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Land uses are pivotal in global carbon cycles. The native forest lands possess a greater potential to sequester higher carbon, which can directly address soil quality and climate change problems. Unfortunately, the rapid conversion of forests to other land use over the past few decades has significantly declined the concentration of carbon in the soils. Therefore, in order to estimate the impact of land-use change (LUC) on soil carbon status, this present study was attempted under major ecosystems (Forest (FOR), cropland (CRP), tea plantation (TEA)) of Conoor. Results from findings revealed that total organic carbon (TOC) concentration and carbon pools were significantly (p<0.05) higher in FOR than in CRP and TEA. TOC (0-45 cm) recorded in FOR, CRP and TEA was 32.88, 11.87 and 18.84 g kg-1 and it decreased along the depth increment. Carbon stock (t ha-1) in FOR, CRP and TEA (0-45cm) was 68.10, 26.04, 42.42. Microbial biomass carbon (MBC) was higher in FOR (283.08 mg kg-1) followed by TEA (94.64 mg kg-1) and CRP (76.22 mg kg-1). The microbial biomass nitrogen (MBN) followed; FOR > TEA > CRP. These results clearly indicate that the LUC has inflicted a greater impact on soil carbon status and its extent was quantified using the land degradation index (LDI). The LDI (0-45 cm) recorded in CRP (-38.65) and TEA (-61.75) signals the need for immediate implementation of carbon management strategies in the CRP and TEA ecosystem to keep the soils of Conoor alive and prevent land degradation.

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Section: Field Description and Investigationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unravelling the carbon pools and carbon stocks under different land uses of Conoor region in Western Ghats of India

Jagadesh

Selvi

Thiyageshwari

et al. 2022

JANS

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“…Recent, research has intensified the focus in the study of land use change (LUC) and its effects on erosional processes. Some of these studies have used remote sensing image classification and modelling as well as erosion models (Chen et al, 2019; Romano et al, 2018; Saravanan et al, 2021). On the other hand, most of the experimental research has been done at the hillslope scale, focusing on short periods of rainfall (Miras‐Avalos et al, 2020; Mohammed et al, 2020; Straffelini et al, 2022) or using rainfall simulation experiments (Bombino et al, 2019, 2021; Cerda et al, 2020; Cerda & Rodrigo‐Comino, 2020; Igor et al, 2020; Marzen et al, 2019; Rodrigo‐Comino et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

The role of land use and land cover changes in triggering soil losses in the SE Alentejo, Portugal

Roxo,

Cerqueira,

Calvo‐Cases

2023

Land Degrad Dev

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This study analyses and interprets the effects of historical and contemporary land use and cover changes (LULC) on soil erosion in the Serra de Mértola region, Portugal, by using the 58 years of measurements in 8 × 22 m erosion plots at the Vale Formoso Erosion Centre and employing methodologies including field observations, aerial image analysis and Landsat NDVI trend assessment. Land cover and management changes, influenced by agricultural policies since the early 20th century, notably during the wheat campaigns of the fascist regime, have exacerbated soil erosion, with the highest rates observed in vertical fallow (964 g m−2 yr−1), wheat (90 g m−2 yr−1) and horizontal fallow (66 g m−2 yr−1). These practices continue to be somewhat relevant today, as cereal production is still being subsidized. However, Quercus, Pines—introduced since agrarian reforms and Portugal's entry into the common agricultural policy (CAP)—and spontaneous vegetation from CAP's set‐aside policies and recent land abandonment trends show lower erosion rates, underlining vegetation's role in erosion protection. Using NDVI trend analysis, we distinguish between natural fluctuations and land cover changes impacts. Understanding these changes and how they relate to slope and valley floor dynamics, such as incision, aggradation or stabilization, is crucial for recognizing human influences on the earth's surface. Our research highlights sustainable land management's role in reducing soil erosion in desertification‐prone areas.

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“…Understanding the influence of landscape pattern change on regional soil erosion could aid in the design of land development plans conducive to soil and water conservation in regional land use layouts [31][32][33]. Although existing researchers have investigated the relationship between land cover change and soil erosion [34][35][36][37], few researchers have explored the relationship between landscape and soil erosion [26,38].…”

Section: Introductionmentioning

confidence: 99%

Exploring the Effects of Land Use Changes on the Landscape Pattern and Soil Erosion of Western Hubei Province from 2000 to 2020

Jiyun

Yong

et al. 2022

IJERPH

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Accelerated land use and land cover changes affect regional landscape patterns and change the ecological environment, including soil conservation capabilities. This is not conducive to the sustainable development of human society. In this research, we explored the land use change pattern and landscape change pattern in western Hubei from 2000 to 2020. Using the Chinese soil loss equation and stepwise regression, we measure how landscape patterns affect soil erosion under land use and cover changes in western Hubei Province. The results show that average soil erosion in the mountainous areas of western Hubei tended to increase from 2000 to 2010 and decrease from 2010 to 2020; soil erosion was higher in the western than in the eastern part of the study area. The land in areas with high-intensity and low-intensity soil erosion was mainly waterfront/grassland and cropland/forestland, respectively, and the area of moderate to severe soil erosion was greatest when the slope was 10–20°. When the slope exceeded 20°, the soil erosion area of each grade tended to decrease; thus, 20° is the critical slope for soil erosion in the study area. The landscape pattern in mountainous areas changed dramatically from 2000 to 2020. At the landscape level, landscape fragmentation increased and connectivity decreased, but the area of landscape diversity was stable. Soil erosion in western Hubei was positively correlated with the contiguity index, aggregation index and largest patch index but negatively correlated with the Shannon evenness index. The higher the landscape fragmentation and the greater the accumulation of single land-use types, the more severe the soil erosion is, while the higher the landscape connectivity and the richer the landscape diversity, the less severe the soil erosion is. The results can inform regional landscape management and soil conservation research.

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Impact of land-use change on soil erosion in the Coonoor Watershed, Nilgiris Mountain Range, Tamil Nadu, India

Cited by 20 publications

References 51 publications

Unravelling the carbon pools and carbon stocks under different land uses of Conoor region in Western Ghats of India

Unravelling the carbon pools and carbon stocks under different land uses of Conoor region in Western Ghats of India

The role of land use and land cover changes in triggering soil losses in the SE Alentejo, Portugal

Exploring the Effects of Land Use Changes on the Landscape Pattern and Soil Erosion of Western Hubei Province from 2000 to 2020

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