Land use change from upland to paddy field in Mollisols drives soil aggregation and associated microbial communities

2020 ◽  
Vol 146 ◽  
pp. 103351 ◽  
Author(s):  
Xin Li ◽  
Huihui Zhang ◽  
Minglong Sun ◽  
Nan Xu ◽  
Guangyu Sun ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Microbial Communities ◽  
Paddy Field ◽  
Soil Aggregation

scholarly journals Study of Land Use Change from 1997 To 2014 Using Landsat Data In Bangli Regency

2018 ◽  
Vol 2 (2) ◽  
pp. 89
Author(s):  
Nuranita Naningsi ◽  
Takahiro Osawa ◽  
I Nyoman Merit
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Fresh Water ◽  
Paddy Field ◽  
Rapid Development ◽  
Landsat 8 ◽  
Landsat Data ◽  
Data Set ◽  
Dry Land ◽  
Bare Land

Bangli Regency is one of Regency in the Bali Province. The total area of  Bangli Regency is 52,081 hectares (9.24%) of total area of Bali Province (563,666 ha). The Growth and the development of the region Bangli Regency the positive impacts on the economy of the community, and the negative impacts on the environment. Land use change is one of the negative issue of development Bangli Regency. This study conduted the calculation of land use change from 1997 to 2014 using Landsat data in Bangli Regency. Landsat 5 TM, Landsat 7 ETM+ and Landsat 8 OLI/TIRS imageries were used to determine the land use map based, on using supervised classification method. The field data set the nine classes were classtuded based, on the classification were fresh water, bare land, forest, residential, bushes, irrigated paddy field, non irrigated paddy field, dry land and plantation. There results showed in land use changes from 1997 to 2014 that plantation increased (19,486.33 ha (36.89%)), and residential increased (1,872.00 ha (3.47%)), there is also a vast to reduction in dry land  (-10,868.90 ha (-21.21%)), forest (-6,333.34 ha (-12.24%)), irrigated paddy field (-1,619.50 ha (-3.17%)), bushes (-1,637.30 ha (-3.27%)), bare land (-63.00 ha (-0.17%)), non irrigated paddy field (-113.59 ha ( -0.26%)) and fresh water (-2.70 ha (-0.05%). The results accuracy rate was 89.45%. Anslyse of land use showed that the significant decrease of plantation area in Bangli Regency hill due to rapid development of infrastrusture of tourism and extensive residential area has increased particularly in sub district of the Kintamani District.

scholarly journals PERUBAHAN PENGGUNAAN LAHAN DAN POTENSI PERLUASAN LAHAN UNTUK SAWAH DI KABUPATEN CIANJUR

2019 ◽  
Vol 19 (1) ◽  
pp. 33-40
Author(s):  
Chaida Chairunnisa ◽  
Khursatul Munibah ◽  
Widiatmaka Widiatmaka
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Paddy Field ◽  
Agricultural Land ◽  
Landsat Imagery ◽  
Land Suitability ◽  
Limiting Factor ◽  
Land Use Land Cover ◽  
Land Use Plan ◽  
Field Area

Population growth, increasing income, and the rapid economic development create complexity of land issues. Land has a central role in  food production, however demand for land increased significantly to meet the needs of the population. Cianjur Regency is one of regencies in the southern part of West Java Province with the largest paddy field area. However, paddy field conversion into non agricultural land or another agricultural land resulted in the decrease of paddy field area. Therefore, in the context of maintaining the availability of rice in Cianjur Regency, this study aimed to: (1) analyze the patterns of land use/land cover, (2) evaluate land suitability for paddy field, and (3) analyze the potency of land for paddy field expansion. Land use change was identified using Landsat imagery of 2000 and 2015 by using fusion techniques. Land suitability for paddy field was analyzed using limiting factor method. Potential for paddy field expansion was analyzed according to land suitability and agricultural land allocation in official regional land use plan map (“RTRW”). The results showed that in the period of 2000 to 2015, most of paddy field were converted into settlements. Land suitability classes for paddy field in Cianjur Regency were not suitable (N) (61.19%), suitable (S2) (9.53%), and marginally suitable (S3)(29.28%). Cianjur Regency still has the potency of land to be used for paddy field expansion of 148,980 ha. Keywords: Land use change, potential area for paddy field priority, land suitability for paddy field

scholarly journals Land use change alters functional gene diversity, composition and abundance in Amazon forest soil microbial communities

2014 ◽  
Vol 23 (12) ◽  
pp. 2988-2999 ◽  
Author(s):  
Fabiana S. Paula ◽  
Jorge L. M. Rodrigues ◽  
Jizhong Zhou ◽  
Liyou Wu ◽  
Rebecca C. Mueller ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Microbial Communities ◽  
Forest Soil ◽  
Gene Diversity ◽  
Soil Microbial Communities ◽  
Functional Gene ◽  
Amazon Forest ◽  
Soil Microbial ◽  
Functional Gene Diversity

Effects of land use change on the composition of soil microbial communities in a managed subtropical forest

2016 ◽  
Vol 373 ◽  
pp. 93-99 ◽  
Author(s):  
Xiaoping Guo ◽  
Han Y.H. Chen ◽  
Miaojing Meng ◽  
Shekhar R. Biswas ◽  
Lixin Ye ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Microbial Communities ◽  
Soil Microbial Communities ◽  
Subtropical Forest ◽  
Soil Microbial ◽  
Effects Of Land Use

Soil aggregation and organic carbon as affected by topography and land use change in western Iran

2012 ◽  
Vol 121 ◽  
pp. 18-26 ◽  
Author(s):  
Shamsollah Ayoubi ◽  
Parisa Mokhtari Karchegani ◽  
Mohammad Reza Mosaddeghi ◽  
Naser Honarjoo
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Land Use Change ◽  
Soil Aggregation ◽  
Western Iran

scholarly journals Responses of Soil Microbial Community Composition and Enzyme Activities to Land-Use Change in the Eastern Tibetan Plateau, China

Forests ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 483
Author(s):  
Da Luo ◽  
Rui-Mei Cheng ◽  
Shun Liu ◽  
Zuo-Min Shi ◽  
Qiu-Hong Feng
Keyword(s):  
Land Use ◽  
Tibetan Plateau ◽  
Land Use Change ◽  
Microbial Communities ◽  
Enzyme Activities ◽  
Microbial Community Composition ◽  
Anaerobic Bacteria ◽  
Physicochemical Characteristics ◽  
Eastern Tibetan Plateau ◽  
Soil Microbial

The land-use change is a major determinant influencing ecosystem carbon (C) patterns and nutrient cycling in subalpine forests in the Eastern Tibetan Plateau. While some results have been obtained in relation to the influence of land-use change on aboveground components, less is known about the belowground microbial communities and related processes. We assessed the structure and function of soil microbial communities following land-use change from old-growth forest (OF) to secondary forest (SF), plantation forest (PF), and grassland (GL) in the Eastern Tibetan Plateau, China. Phospholipid fatty acid profiles and enzyme activity analysis were used to determine the composition and activities of microbial communities, respectively. Significant differences in physicochemical characteristics, microbial communities, and extracellular enzyme activities in soils under different land uses were observed in this study. pH and total nitrogen (TN) in OF and SF were significantly higher than in GL. PF showed the highest soil organic C (SOC), and significantly higher than in GL. Total phosphorus (TP) and C/N ratio in PF were significantly higher than the other land-use types. OF and PF had significantly higher anaerobic bacteria than in GL. The actinobacteria in SF was significantly higher than in PF. The saprotrophic and ectomycorrhizal (SEM) fungi was significantly lower in GL than the other land-use types. Total microbial biomass and β-glucosidase activities were significantly higher in OF and SF than in GL. GL had significantly higher polyphenoloxidase activities than in OF and PF. Anaerobic bacteria, arbuscular mycorrhizal fungi and SEM fungi were positively correlated with SOC and TP, Gram+ bacteria were correlated with C/P and N/P ratio. N-acetylglucosaminidase activity was negatively correlated with anaerobic bacteria, while polyphenoloxidase activity was positively related to actinobacteria. Furthermore, redundancy analysis revealed that the microbial community composition was primarily regulated by TN and pH. This suggested that altered land-use type initiated changes in the physicochemical characteristics of the soils, which affected the composition of microbial communities and microbial enzyme activities related to nutrient cycling in this area. This provides a scientific basis for the influence mechanism of land use on composition and function of microbial communities, as well as the rational utilization and management of land resources.

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