Spatial patterns and driving factors of aboveground and belowground biomass over the eastern Eurasian steppe

2022 ◽  
Vol 803 ◽  
pp. 149700
Author(s):  
Lei Ding ◽  
Zhenwang Li ◽  
Beibei Shen ◽  
Xu Wang ◽  
Dawei Xu ◽  
...  
Keyword(s):  
Spatial Patterns ◽  
Belowground Biomass ◽  
Driving Factors ◽  
Eurasian Steppe ◽  
Aboveground And Belowground Biomass

scholarly journals Investigating Seasonal Effects of Dominant Driving Factors on Urban Land Surface Temperature in a Snow-Climate City in China

2020 ◽  
Vol 12 (18) ◽  
pp. 3006
Author(s):  
Chaobin Yang ◽  
Fengqin Yan ◽  
Xuelei Lei ◽  
Xiuli Ding ◽  
Yue Zheng ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Snow Cover ◽  
Spatial Patterns ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Thermal Environment ◽  
Driving Factors ◽  
Seasonal Effects ◽  
Landsat 8 ◽  
Crop Species

Land surface temperature (LST) is a crucial parameter in surface urban heat island (SUHI) studies. A better understanding of the driving mechanisms, influencing variations in LST dynamics, is required for the sustainable development of a city. This study used Changchun, a city in northeast China, as an example, to investigate the seasonal effects of different dominant driving factors on the spatial patterns of LST. Twelve Landsat 8 images were used to retrieve monthly LST, to characterize the urban thermal environment, and spectral mixture analysis was employed to estimate the effect of the driving factors, and correlation and linear regression analyses were used to explore their relationships. Results indicate that, (1) the spatial pattern of LST has dramatic monthly and seasonal changes. August has the highest mean LST of 38.11 °C, whereas December has the lowest (−19.12 °C). The ranking of SUHI intensity is as follows: summer (4.89 °C) > winter with snow cover (1.94 °C) > spring (1.16 °C) > autumn (0.89 °C) > winter without snow cover (−1.24 °C). (2) The effects of driving factors also have seasonal variations. The proportion of impervious surface area (ISA) in summer (49.01%) is slightly lower than those in spring (56.64%) and autumn (50.85%). Almost half of the area is covered with snow (43.48%) in winter. (3) The dominant factors are quite different for different seasons. LST possesses a positive relationship with ISA for all seasons and has the highest Pearson coefficient for summer (r = 0.89). For winter, the effect of vegetation on LST is not obvious, and snow becomes the dominant driving factor. Despite its small area proportion, water has the strongest cooling effect from spring to autumn, and has a warming effect in winter. (4) Human activities, such as agricultural burning, harvest, and different choices of crop species, could also affect the spatial patterns of LST.

scholarly journals Evaluation of the effects of various factors on aboveground and belowground biomass storage capacity of eastern mediterranean maquis vegetation

2017 ◽  
Vol 141 (3-4) ◽  
pp. 123-130
Author(s):  
Ali Durkaya ◽  
Sinan Kaptan ◽  
Ali Sabanci ◽  
Birsen Durkaya
Keyword(s):  
Eastern Mediterranean ◽  
Age Factors ◽  
Eastern Mediterranean Region ◽  
Belowground Biomass ◽  
Mean Values ◽  
Biomass Storage ◽  
Vegetation Height ◽  
Root Shoot Ratio ◽  
Aboveground And Belowground Biomass ◽  
Mediterranean Maquis

This study was carried out on the data obtained from 35 plot areas selected among the vertical distribution regions of maquis in study area located in Eastern Mediterranean region. The data were grouped in terms of altitude, dominant exposure, vegetation height, and mean age factors, and it is tried to reveal the change of maquis biomass depending on these factors. The data obtained shown significant variation and, for this reason, the mass values are expressed as mean values. The potential relationship between the mentioned factors and the amounts of stored biomass was examined by using t-test and variation analysis. The mean aboveground biomass amount was found to be 24,183 ton/ha, while mean belowground biomass that doesn’t contain fine root was found to be 41,062 ton/ha. According to these results obtained from mean values, the root/shoot ratio was calculated to be 1.7.

scholarly journals Partition of biomass and nitrogen in a potato crop under three nitrogen fertilization treatments

Siembra ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 057-068
Author(s):  
Pedro Manuel Villa ◽  
Lina Sarmiento ◽  
Fermín JR Rada ◽  
Alice Cristina Rodrigues ◽  
Nelson Márquez ◽  
...  
Keyword(s):  
Crop Production ◽  
Nitrogen Nutrition ◽  
Potato Crop ◽  
Belowground Biomass ◽  
Nitrogen Partitioning ◽  
Total Biomass ◽  
Adaptive Responses ◽  
Nitrogen Levels ◽  
Aboveground And Belowground Biomass ◽  
Determining Factors

Nitrogen nutrition considerably influences the process of growing and producing potato crops. The aim of this study was to determine the effects of nitrogen nutrition on the pattern of biomass and nitrogen partitioning during the growth of potato crop in Mérida, Mérida, Venezuela. Experimental land plots were set, with a randomized blocks design, and with three different fertilization treatment settings for the "Granola" cultivar. The first one without nitrogen (0-N), the next one with 133 Kg N Ha-1 (133-N), and the last one with 400 Kg N Ha-1 (400-N). In the main phenological stages of the crop, biomass and nitrogen levels were measured for each organ. The performance of the tubers and the total biomass are strongly influenced by the availability of nitrogen and assimilatory biomass. The total biomass production, as well as the biomass and nitrogen partitioning to each organ, showed the following sequence: 400-N > 133-N > 0-N. However, biomass and nitrogen partitioning to the roots and stolons was higher in the treatment with limited nitrogen levels. Proportional changes among aboveground and belowground biomass are adaptive responses to nitrogen deficit conditions, which, in their turn, are determining factors in crop production.

scholarly journals Carbon Stocks in Aboveground and Belowground Biomass of Sub-Humid Tropical Forest in Southwestern Nigeria

OALib ◽  
2019 ◽  
Vol 06 (08) ◽  
pp. 1-12
Author(s):  
Habeeb Ajibola Yusuf ◽  
Jesumbo Joseph Oludipe ◽  
Oluwatoyin Olajumoke Adeoye ◽  
Idowu Ezekiel Olorunfemi
Keyword(s):  
Tropical Forest ◽  
Belowground Biomass ◽  
Carbon Stocks ◽  
Southwestern Nigeria ◽  
Aboveground And Belowground Biomass ◽  
Humid Tropical Forest

scholarly journals Effet de la terre des termitières sur la croissance de trois cultivars de la morelle noire (Solanum nigrum L. : Solanaceae) cultivée à Brazzaville (Congo)

2020 ◽  
Vol 14 (1) ◽  
pp. 192-203
Author(s):  
Thierry Placide Médard Kingo Kpangba ◽  
Joseph Mpika ◽  
Alaric Makoundou ◽  
Mercier Alain Bita ◽  
Attibayéba Attibayéba
Keyword(s):  
Belowground Biomass ◽  
Positive Influence ◽  
Solanum Nigrum ◽  
Growth And Yield ◽  
Termite Mound ◽  
Termite Mounds ◽  
En Bloc ◽  
Black Nightshade ◽  
Aboveground And Belowground Biomass ◽  
Solanum Nigrum L

La productivité de la morelle noire est faible sur les sols surexploités dans les zones périurbaines de Brazzaville. L’objectif était d’évaluer l’apport de la terre des termitières sur la croissance végétale de trois cultivars de la morelle noire. Les termitières collectées ont été broyées, tamisées et amendées les planches de 3 m x 1,2 m. Une planche ayant reçu 0 kg, 2 kg, 4 kg et 6 kg de terre des termitières, 60 plants d’un cultivar ont été repiqués aux écartements 20 x 20 cm selon un schéma bi factoriel complet 4 x 3 logé dans un dispositif en bloc complètement randomisé. Les traitements ont été répétés trois fois. Les résultats ont révélé une meilleure croissance en hauteur et en diamètre ainsi qu’un meilleur développement foliaire des plants amendés avec les doses de la terre des termitières en comparaison de ceux n’en ayant pas reçu. L’apport de 6 kg de terre des termitières montre une influence positive sur le développement racinaire de plants des trois cultivars. L’apport 2 kg, 4 kg et 6 kg de terre de termitières améliore la croissance végétative et le rendement en biomasses aérienne et souterraine de trois cultivars de morelle noire cultivés au Congo. © 2020 International Formulae Group. All rights reserved. Mots clés: Congo, fertilisation, termitières champignons, croissance végétative, Solanum nigrum L. English Title: Effect of the termite mounds on the vegetative production of three cultivars of black nightshade (Solanum nigrum L.: Solanaceae) grown in Brazzaville, Congo English Abstract The productivity of black nightshade is low on the overexploited soils in the suburban areas of Brazzaville. The objective was to evaluate the contribution of termite mound on the plant growth of three black nightshade cultivars. The termite mounds were collected, crushed, sieved and amended the planks of 3m x 1.2m. A board having received 0 kg, 2 kg, 4 kg and 6 kg of termite mounds, 60 plants of a cultivar were transplanted at 20 x 20 cm intervals according to a complete 4 x 3 bi-factorial diagram housed in a block plan completely randomized. The treatments were repeated three times. The results showed better growth in height and diameter, as well as better foliar development of seedlings amended with termite mounds compared to those that did not. The contribution of 6 kg of termite mound had a positive influence on the root development of the three cultivars. The contribution of 2 kg, 4 kg and 6 kg of termite mound improved vegetative growth and yield in aboveground and belowground biomass of three black nightshade cultivars grown in Congo. © 2020 International Formulae Group. All rights reserved. Keywords: Congo, cultivar, fertility, Termite fungi, vegetative production, Solanum nigrum L.

Sign in / Sign up

Export Citation Format

Share Document