Diversity of Methanotrophic Bacteria Community between Different Development Stages in Chinese Temperate Forest

2013 ◽  
Vol 726-731 ◽  
pp. 4226-4231
Author(s):  
Xing Bo Zheng ◽  
Xin Sui ◽  
Jun Qiang Zheng ◽  
Shi Jie Han ◽  
Guan Hua Dai
Keyword(s):  
Forest Succession ◽  
Organic Matter Content ◽  
Diversity Indices ◽  
Matter Content ◽  
Changbai Mountains ◽  
Forest Land ◽  
Community Structures ◽  
Similarity Coefficients ◽  
Aerobic Methanotrophs ◽  
Succession Process

The method of terminal restriction fragment length polymorphism (T-RFLP) was used to study the community structures and diversities of aerobic methanotrophs by the key functional genes pmoA in the forest land soils of Changbai Mountains in China. And the effects of soil factors on them were also evaluated, and then the mechanism of microbiological communities in forest land soils response to the forest succession were discussed. The results showed that the diversity indices of aerobic methanotrophs were higher, and community structures appeared more complicated at the later plots. Their similarity coefficients gradually declined from the middle of the forest succession to the adjacent forest, indicating communities dynamic succession. During succession process, soil moisture and organic matter content had significant influence on it. The microbial communities were under the stress of succession process, which led to more emission of other greenhouse-gas from forest soils.

scholarly journals KAJIAN SIFAT FISIKA TANAH SUB DAS AIR BATANANG DAS SUMPUR KECAMATAN BATIPUH KABUPATEN TANAH DATAR

Jurnal Solum ◽  
2009 ◽  
Vol 6 (1) ◽  
pp. 14
Author(s):  
Yulnafatmawita Yulnafatmawita ◽  
Amrizal Saidi ◽  
Al Asfhihani Elnita
Keyword(s):  
Physical Properties ◽  
Organic Matter Content ◽  
Soil Physical Properties ◽  
Matter Content ◽  
Soil Samples ◽  
Forest Land ◽  
Undisturbed Soil ◽  
West Sumatra ◽  
Fine Clay ◽  
Bulk Volume

Excessive utilization of natural resource by human being will affect the sustainability of agriculture, land and environment.  This is due to degradation of soil physical properties in the area.  A research about study of soil physical properties had been taken out in a sub-sub watershed Batanang of Sumpur watershed, Batipuh, Tanah Datar Regency, in West Sumatra.  The research was conducted by surveying the area in 2006.  Disturbed and undisturbed soil samples were taken in different land units.  Then, soil samples were analysed at soil laboratory, Agriculture College, Andalas University Padang.  The result showed that all of land units in this sub sub watersehed had the same soil texture class, that was fine clay.  The bulk volume of the soil was higher in Mixed woodland unit than those in forest land units.  Permeability value of the soil was higher at forest from all degrees of slope than that at mixed woodland, even though soil organic matter content of mixed woodland unit higher than that at forest with 25-45% slope.Keywords: Sub watershed (DAS), forest,  land unit, soil physical properties

Analysis of the Effect of Tropical Crop Cultivation on Soil Quality

2014 ◽  
Vol 1010-1012 ◽  
pp. 1113-1119
Author(s):  
Li Qing Du ◽  
Liang Yong Zheng ◽  
Hai Yang Ma ◽  
Hao Wu ◽  
Chang Bin Wei
Keyword(s):  
Land Use ◽  
Soil Quality ◽  
Organic Matter Content ◽  
Matter Content ◽  
Ziziphus Mauritiana ◽  
Forest Land ◽  
Crop Cultivation ◽  
Fertility Index ◽  
Land Use Types ◽  
Tropical Crop

The effects of different land use types on soil quality was studied in cultivation areas of the mango, longan, greening plant, Ziziphus mauritiana, shelter-forest, and macadamia, as well as in the undeveloped land of the South Subtropical Crops Research Institute. Different land use types showed various effects on soil quality. Higher soil pH and bulk densities in the undeveloped land, higher content of available phosphrous (P) and available potassium (K) in macadamia cultivation areas, and higher organic matter content in shelter-forest land were observed relative to those of other land use types. The integrated fertility index of soil was ranked as follows: shelter-forest land>undeveloped land> Ziziphus mauritiana land>macadamia land and>mango land>longan land>greening plant land. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

Physico-Chemical Properties of Soil Collected from Chandrabhaga River in Kalmeshwar, Nagpur, Maharashtra

2020 ◽  
Vol 07 (02) ◽  
pp. 1-3
Author(s):  
Amita M Watkar ◽  
Keyword(s):  
Organic Matter ◽  
Soil Quality ◽  
Agricultural Land ◽  
Organic Matter Content ◽  
Chemical Properties ◽  
Matter Content ◽  
Soil Attributes ◽  
Essential Components ◽  
Agricultural Land Management ◽  
Physical And Chemical

Soil, itself means Soul of Infinite Life. Soil is the naturally occurring unconsolidated or loose covering on the earth’s surface. Physical properties depend upon the amount, size, shape, arrangement, and mineral composition of soil particles. It also depends on the organic matter content and pore spaces. Chemical properties depend on the Inorganic and organic matter present in the soil. Soils are the essential components of the environment and foundation resources for nearly all types of land use, besides being the most important component of sustainable agriculture. Therefore, assessment of soil quality and its direction of change with time is an ideal and primary indicator of sustainable agricultural land management. Soil quality indicators refer to measurable soil attributes that influence the capacity of a soil to function, within the limits imposed by the ecosystem, to preserve biological productivity and environmental quality and promote plant, animal and human health. The present study is to assess these soil attributes such as physical and chemical properties season-wise.

UPAYA MEMPERTAHANKAN BUNGA DAN FRUIT SET TANAMAN CABAI (Capsicum annum L.) PADA LAHAN ULTISOL MELALUI PEMBERIAN LUMPUR LAUT DAN PUPUK KANDANG

2017 ◽  
Vol 13 (2) ◽  
pp. 74-77
Author(s):  
Imelda J Lawalatta ◽  
Francina Matulessy ◽  
Meitty L Hehanussa
Keyword(s):  
Fruit Set ◽  
Agricultural Land ◽  
Mineral Soil ◽  
Organic Matter Content ◽  
Nutrient Deficiency ◽  
Matter Content ◽  
Infrastructure Development ◽  
Capsicum Annum ◽  
Factor Effect ◽  
Marine Mud

Chili (Capsicum annum L.) often experience the highest price fluctuations in Indonesia. This is caused by the production that is often disrupted in certain months, especially in the months in the rainy season due to flowers and fruits that fall before the harvest. Since agricultural land has changed its function for infrastructure development, marginal land (Ultisol) is used. The ultisol problem is: high acidity, low organic matter content, nutrient deficiency important for plants (eg N, P, Ca, Mg and Mo) and high solubility of Al, Fe and Mn. The provision of organic materials such as manure and marine mud will overcome the problem of acid-rich mineral soil and play an important role in improving, increased and maintaining sustainable land productivity. Research results for chili flower significantly. the highest number of flowers found in the treatment of L0P3, L1P2, L1P3 and L2P3 that is > 60 flower/plant. There was a single factor effect for the amount of fruit, mostly found in L3 treatment (600 ton/ha marine mud) that is 22.36 fruit/plant. The treatment of manure significantly influenced the formation of the most fruit set in the treatment of P0 and P2 (without manure and manure 20 ton/ha) that is 77.60% and 70.,45%. Keywords: Ultisol, Marine mud, Manure, Flowers and Fruit sets   ABSTRAK Tanaman cabai besar (Capsicum annum L.) sering mengalami fluktuasi harga paling tinggi di Indonesia. Hal tersebut disebabkan oleh produksi yang sering terganggu pada bulan tertentu terutama pada bulan-bulan di musim penghujan dikarenakan bunga dan buah yang rontok sebelum panen. Karena lahan pertanian banyak beralih fungsinya untuk pembangunan infrastuktur, maka digunakan lahan marginal (Ultisol). Masalah ultisol ialah: kemasaman tinggi, kadar bahan organik yang rendah, kekurangan unsur hara penting bagi tanaman (contoh: N, P, Ca, Mg dan Mo) serta tingginya kelarutan Al, Fe dan Mn. Pemberian bahan organik seperti pupuk kandang dan Lumpur laut akan mengatasi persoalan tanah mineral masam berkadar Al tinggi dan berperan penting dalam memperbaiki, meningkatkan serta mempertahankan produktifitas lahan secara berkelanjutan Hasil Penelitian untuk jumlah bunga cabai berpengaruh signifikan. jumlah bunga terbanyak terdapat pada perlakuan L0P3, L1P2, L1P3 dan L2P3 yaitu > 60 bunga/tanaman. Terjadi pengaruh faktor tunggal untuk jumlah buah, terbanyak terdapat pada perlakuan L3 ( 600 ton/ha lumpur laut) yaitu 22,36 buah/tanaman. Perlakuan pupuk kandang berpengaruh signifikan Pembentukan fruit set terbanyak pada perlakuan P0 dan P2 (tanpa pupuk kandang dan pupuk kandang 20 ton/ha) yaitu 77,60% dan 70,45%. Kata kunci: Ultisol, Lumpur Laut, Pupuk Kandang, Bunga dan Fruit set

scholarly journals Soil nitrogen supply of peat grasslands estimated by degree days and soil organic matter content

2020 ◽  
Vol 117 (3) ◽  
pp. 351-365
Author(s):  
J. Pijlman ◽  
G. Holshof ◽  
W. van den Berg ◽  
G. H. Ros ◽  
J. W. Erisman ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Nitrogen ◽  
Organic Matter Content ◽  
Matter Content ◽  
Nitrogen Supply ◽  
Degree Days ◽  
Soil Organic Matter Content ◽  
Soil Nitrogen Supply

scholarly journals Microbial Respiration and Enzyme Activity Downstream from a Phosphorus Source in the Everglades, Florida, USA

Land ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 696
Author(s):  
Sanku Dattamudi ◽  
Saoli Chanda ◽  
Leonard J. Scinto
Keyword(s):  
Nutrient Dynamics ◽  
Microbial Respiration ◽  
Organic Matter Content ◽  
Physicochemical Analysis ◽  
Matter Content ◽  
Enzyme Assays ◽  
Co2 Efflux ◽  
Soil Organic Matter Content ◽  
Phosphorus Source ◽  
P Distribution

Northeast Shark River Slough (NESS), lying at the northeastern perimeter of Everglades National Park (ENP), Florida, USA, has been subjected to years of hydrologic modifications. Construction of the Tamiami Trail (US 41) in 1928 connected the east and west coasts of SE Florida and essentially created a hydrological barrier to southern sheet flow into ENP. Recently, a series of bridges were constructed to elevate a portion of Tamiami Trail, allow more water to flow under the bridges, and attempt to restore the ecological balance in the NESS and ENP. This project was conducted to determine aspects of soil physiochemistry and microbial dynamics in the NESS. We evaluated microbial respiration and enzyme assays as indicators of nutrient dynamics in NESS soils. Soil cores were collected from sites at certain distances from the inflow (near canal, NC (0–150 m); midway, M (150–600 m); and far from canal, FC (600–1200 m)). Soil slurries were incubated and assayed for CO2 emission and β-glucoside (MUFC) or phosphatase (MUFP) activity in concert with physicochemical analysis. Significantly higher TP contents at NC (2.45 times) and M (1.52 times) sites than FC sites indicated an uneven P distribution downstream from the source canal. The highest soil organic matter content (84%) contents were observed at M sites, which was due to higher vegetation biomass observed at those sites. Consequently, CO2 efflux was greater at M sites (average 2.72 µmoles g dw−1 h−1) than the other two sites. We also found that amendments of glucose increased CO2 efflux from all soils, whereas the addition of phosphorus did not. The results indicate that microbial respiration downstream of inflows in the NESS is not limited by P, but more so by the availability of labile C.

Sign in / Sign up

Export Citation Format

Share Document