scholarly journals Estimating possible bumblebee range shifts in response to climate and land cover changes

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Yukari Suzuki-Ohno ◽  
Jun Yokoyama ◽  
Tohru Nakashizuka ◽  
Masakado Kawata
Keyword(s):  
Land Cover ◽  
Forest Area ◽  
Range Shifts ◽  
Coniferous Forests ◽  
Land Cover Changes ◽  
Secondary Forests ◽  
Adaptation To Climate Change ◽  
Bumblebee Species ◽  
The Past ◽  
Occurrence Data

AbstractWild bee decline has been reported worldwide. Some bumblebee species (Bombus spp.) have declined in Europe and North America, and their ranges have shrunk due to climate and land cover changes. In countries with limited historical and current occurrence data, it is often difficult to investigate bumblebee range shifts. Here we estimated the past/present distributions of six major bumblebee species in Japan with species distribution modeling using current occurrence data and past/present climate and land cover data. The differences identified between estimated past and present distributions indicate possible range shifts. The estimated ranges of B. diversus, B. hypocrita, B. ignitus, B. honshuensis, and B. beaticola shrank over the past 26 years, but that of B. ardens expanded. The lower altitudinal limits of the estimated ranges became higher as temperature increased. When focusing on the effects of land cover change, the estimated range of B. diversus slightly shrank due to an increase in forest area. Such increase in forest area may result from the abandonment of agricultural lands and the extension of the rotation time of planted coniferous forests and secondary forests. Managing old planted coniferous forests and secondary forests will be key to bumblebee conservation for adaptation to climate change.

scholarly journals Implikasi Perizinan Sektor Berbasis Lahan Terhadap Kondisi Kawasan Hutan Di Provinsi Riau

2019 ◽  
Vol 15 (1) ◽  
pp. 95
Author(s):  
Suprapto Suprapto ◽  
San Afri Awang ◽  
Ahmad Maryudi ◽  
Wahyu Wardhana
Keyword(s):  
Land Cover ◽  
Research Method ◽  
Sustainable Forest Management ◽  
Central Government ◽  
Descriptive Analysis ◽  
Forest Area ◽  
Land Cover Changes ◽  
Forest Plantations ◽  
Qualitative Descriptive ◽  
Forestry Plantations

Forest resources can be utilized through various activities in the land-based sector, including forestry, plantations, and mining. The implications of the issuance of various permits are indicated to cause changes in the area of forest and land cover. This paper aims to analyze and explain the implications of the various land-based sector licenses that have been issued by the local government and the central government on the condition of forest areas in Riau Province. The research method was carried out with qualitative descriptive analysis, through interviews, spatial analysis, and review and tracking documents. The results of the study showed that during the period 1986-2017 there had been a change in the area of forest area and land cover. The biggest changes in forest areas occur due to the conversion of forest areas into plantations, while the largest land cover changes in successive classes are land cover for plantations (Pk), forest plantations (Ht) and mining (Pn). Some of the recommendations that we propose are the temporary dismissal of licenses in the Riau forest area, the rearrangement of all licenses related to forest areas, increasing integrity and willingness of all parties in Riau and the central government in sustainable forest management.

Monitoring of land cover changes in Northwest China during the past decade using AVHRR data

2003 ◽  
Author(s):  
Mingguo Ma ◽  
Xuemei Wang ◽  
Frank Veroustraete ◽  
Qinghan Dong
Keyword(s):  
Land Cover ◽  
Northwest China ◽  
Land Cover Changes ◽  
The Past ◽  
Avhrr Data

scholarly journals Farmers’ Income and Land Cover Change at Lore Lindu National Park in Indonesia

2018 ◽  
Vol 12 (12) ◽  
pp. 41
Author(s):  
Rustam Abdul Rauf ◽  
Adam Malik ◽  
Isrun . ◽  
Golar . ◽  
Alimudin Laapo ◽  
...  
Keyword(s):  
Land Cover ◽  
Land Cover Change ◽  
National Park ◽  
Agricultural Land ◽  
Secondary Forest ◽  
Forest Area ◽  
Farm Income ◽  
Primary Forest ◽  
Secondary Forests ◽  
Lore Lindu National Park

Lore Lindu National Park in Central Sulawesi is one of the protected areas. Although it is protected, many of its areas are experiencing pressure and disruption by human activities. The purpose of this research was to know the relationship between farmers’ income and land cover change at Lore Lindu National Park. The research method was a participatory survey. Variables of incomes were sourced from farming and outside farming (forests). Data of land cover change were obtained using imagery in 2012, 2014 and 2016. The result of research is the average of farming income of IDR 1,387,077 (cocoa farming) and non-farm income of IDR 854,819 (forest honey, resin). In the last five years (2012-2016), the primary forest area decreased by 902.37 ha, while the secondary forest has shown an increase of 2,233.61 ha. The trend of land cover change was drastic, with change in the secondary dry land forest area from 6.9 ha (in 2012) to 2,240.5 ha (in 2016). The increased secondary forest area and the secondary forests have been converted into agricultural land and mixed gardens.

Land cover changes in tidal salt marshes of the Bahía Blanca estuary (Argentina) during the past 40 years

2013 ◽  
Vol 133 ◽  
pp. 23-31 ◽  
Author(s):  
Paula Pratolongo ◽  
Carla Mazzon ◽  
Georgina Zapperi ◽  
María Julia Piovan ◽  
Mark M. Brinson
Keyword(s):  
Land Cover ◽  
Salt Marshes ◽  
Land Cover Changes ◽  
Bahía Blanca Estuary ◽  
The Past ◽  
Blanca Estuary

scholarly journals Expansion of oil palm and other cash crops causes an increase of the land surface temperature in the Jambi province in Indonesia

2017 ◽  
Vol 14 (20) ◽  
pp. 4619-4635 ◽  
Author(s):  
Clifton R. Sabajo ◽  
Guerric le Maire ◽  
Tania June ◽  
Ana Meijide ◽  
Olivier Roupsard ◽  
...  
Keyword(s):  
Land Cover ◽  
Surface Temperature ◽  
Land Surface Temperature ◽  
Oil Palm ◽  
Land Surface ◽  
Land Cover Changes ◽  
Land Transformation ◽  
Clear Cut ◽  
The Past ◽  
Cash Crops

Abstract. Indonesia is currently one of the regions with the highest transformation rate of land surface worldwide related to the expansion of oil palm plantations and other cash crops replacing forests on large scales. Land cover changes, which modify land surface properties, have a direct effect on the land surface temperature (LST), a key driver for many ecological functions. Despite the large historic land transformation in Indonesia toward oil palm and other cash crops and governmental plans for future expansion, this is the first study so far to quantify the impacts of land transformation on the LST in Indonesia. We analyze LST from the thermal band of a Landsat image and produce a high-resolution surface temperature map (30 m) for the lowlands of the Jambi province in Sumatra (Indonesia), a region which suffered large land transformation towards oil palm and other cash crops over the past decades. The comparison of LST, albedo, normalized differenced vegetation index (NDVI) and evapotranspiration (ET) between seven different land cover types (forest, urban areas, clear-cut land, young and mature oil palm plantations, acacia and rubber plantations) shows that forests have lower surface temperatures than the other land cover types, indicating a local warming effect after forest conversion. LST differences were up to 10.1 ± 2.6 °C (mean ± SD) between forest and clear-cut land. The differences in surface temperatures are explained by an evaporative cooling effect, which offsets the albedo warming effect. Our analysis of the LST trend of the past 16 years based on MODIS data shows that the average daytime surface temperature in the Jambi province increased by 1.05 °C, which followed the trend of observed land cover changes and exceeded the effects of climate warming. This study provides evidence that the expansion of oil palm plantations and other cash crops leads to changes in biophysical variables, warming the land surface and thus enhancing the increase of the air temperature because of climate change.

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