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Hui Zhang, Ping Heng Li, Guo Mo Zhou, Yu Feng Zhou
Vegetation index is a key indicator for qualitative and quantitative assessment of green vegetation, which has been widely used in vegetation monitoring. Forests are often distributed in mountainous areas with complex topography, which is one of the main factors of accurate retrieval of forest vegetation information. Here, we analyzed the topographic effects on canopy reflectance using a geometric optical model. The responses of complete ratio vegetation indices [simple ratio index (SR), normalized difference vegetation index (NDVI) and moisture adjusted vegetation index (MAVI)], incomplete ratio vegetation indices [enhanced vegetation index (EVI) and soil adjusted vegetation index (SAVI)], non-ratio vegetation indices [reduced simple ratio (RSR), modified normalized difference vegetation index (MNDVI), greenness vegetation index (GVI)] and, topography adjusted vegetation index [topography adjusted vegetation index (TAVI)] to topography were discussed in detail, with the aim to provide reference for selecting vegetation index in complex terrain mountainous area...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Lu Zuo, Huan Jiong Wang, Rong Gao Liu, Yang Liu, Rong Shang
Vegetation phenology is a comprehensive indictor for the responses of terrestrial ecosystem to climatic and environmental changes. Remote sensing spectrum has been widely used in the extraction of vegetation phenology information. However, there are many differences between phenology extracted by remote sensing and site observations, with their physical meaning remaining unclear. We selected one tile of MODIS data in northeastern China (2000-2014) to examine the SOS and EOS differences derived from the normalized difference vegetation index (NDVI) and the simple ratio vegetation index (SR) based on both the red and near-infrared bands...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Xue Jiao Zheng, Zhen Wen Yu, Yong Li Zhang, Yu Shi
With the large-spike wheat cultivar Shannong 23 as test material,a field experiment was conducted by increasing the relative soil moisture content to 70% and 65% at jointing and anthesis stages. Four nitrogen levels,0 (N0 ), 180 (N1 ), 240 (N2 ) and 300 kg·hm-2 (N3 ), were designed to examine the effects of nitrogen application rates on the interception of photosynthetic active radiation (PAR) and dry matter distribution of wheat at different canopy layers. The results showed that the total stem number of wheat population at anthesis stage, the leaf area index at 10, 20 and 30 days after anthesis, PAR capture ratio at upper and middle layers and total PAR capture ratio in wheat canopy on day 20 after anthesis of treatment N2 were significantly higher than those in the treatments of both N0 and N1 ...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Duo Ju Zhu, Zhong Ming Wen, Jing Zhang, Yu Tao, Hong Wen Zeng, Yang Tang
To investigate the effects of the introduction of Robinia pseudoacacia on the functional structure of plant communities, we selected paired-plots of R. pseudoacacia communities and native plant communities across different vegetation zones, i.e., steppe zone, forest-steppe zone, forest zone in hilly-gully region of Loess Plateau, China. We measured several functional characteristics and then compared the functional structures of R. pseudoacacia and native plant communities in different vegetation zones. The results showed that the variation of the functional traits across different vegetation zones were consistent in R...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Xiao Ying Huo, Shou Zhang Peng, Jing Yu Ren, Yang Cao, Yun Ming Chen
This study analyzed the dynamics of net primary productivity (NPP) of Pinus tabuliformis forest under future climate scenarios in Shaanxi Province during 2015-2100, using a dynamic vegetation model (LPJ-GUESS). The results showed that in the 2015-2100 period, annual mean temperature of this region would significantly increase by 0.12, 0.23 and 0.54 ℃·10 a-1 under RCP2.6 , RCP4.5 and RCP8.5 scenarios, respectively, while the annual precipitation would have no significant change under climate scenarios except RCP4...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Kan Kan Shang, Bo Chen, Liang Jun Da
The population structure, regeneration ways and spatial relationships of six relict deci-duous broadleaved trees were examined based on community investigation on Mount Tianmu, East China. The results showed that relict deciduous broadleaved trees had a strong ability of vegetative reproduction and their population structure was generally belonged to intermittent type. Some relict species such as Cyclocarya paliurus and Liquidamb aracalycina regenerated discontinuously at appropriate sites via long-distance diffusion...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Li Ting Zheng, Tian Su, Xiang Yu Liu, Fang Yin, Chao Guo, Bin Tuo, En Rong Yan
Island vegetation plays an important role in biodiversity research across the world. The study of plant diversity in island is helpful for understanding the mechanism of plant diversity maintenance under land-sea interaction. Here, four typical plant communities (Quercus acutissima community, Robinia pseudoacacia community, Pinus thunbergii community and Vitex negundo community) in Miao Archipelago were selected to examine the species, functional and structural diversities and their responses to environmental factors at the community scale by using species diversity indices, functional diversity indices, as well as structural diversity indices...
February 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Bao Rong Wang, Jia Jia Yang, Shao Shan An, Hai Xing Zhang, Xue Juan Bai
The objectives of this study were to explore the effects of vegetation type, topographic features and their combined effects on soil microbial biomass stoichiometry, so as to better understand the interaction of soil, soil microbes and nutrient cycling under different vegetation types in the hilly-gully region of the Loess Plateau. Soils from three vegetation zones (forest zone, forest-steppe and steppe) and five slope positions (south/north backslope, south/north shoulder and summit) were chosen and the effects of vegetation types and topography features on soil and C:N:P ratios in soil microbial biomass were investigated in this study...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Yi Zhe Li, Ting Long Zhang, Qiu Yu Liu, Ying Li
The ecological process models are powerful tools for studying terrestrial ecosystem water and carbon cycle at present. However, there are many parameters for these models, and weather the reasonable values of these parameters were taken, have important impact on the models simulation results. In the past, the sensitivity and the optimization of model parameters were analyzed and discussed in many researches. But the temporal and spatial heterogeneity of the optimal parameters is less concerned. In this paper, the BIOME-BGC model was used as an example...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Zhi Peng Wang, Xian Zhou Zhang, Yong Tao He, Meng Li, Pei Li Shi, Jia Xing Zu, Ben Niu
Precipitation change is an important factor in the inter-annual variation of grassland growth on the Tibetan Plateau. The total amount, distribution pattern and concentration time are three basic characteristics of precipitation change. The temporal and spatial characteristics of precipitation change were analyzed based on climate data of 145 meteorological stations on the Tibetan Plateau and nearby areas from 2000 to 2015. The total precipitation amount was characterized by annual precipitation, distribution pattern of precipitation during the year was characterized by improved precipitation concentration index (PCI), and precipitation centroid (PC) was defined to indicate the change in precipitation concentrated time...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Yi Feng Wang, Ru Lin Qi, Ya Jun Yang, Yang Yang, Wei Dong Song, Wan Yi Mao
The paper studied the effects of altitude on reproductive characteristics in 12 populations of Saussurea przewalskii at the eastern Qinhai-Tibetan Plateau, China. The results showed that the size, reproductive organ biomass, vegetative organ biomass, capitulum number, and seed number of individual plant decreased with the increasing altitude, and the capitulum mass and hundred-grain mass increased continuously. S. przewalskii could ensure its reproduction by reducing plant body size to decrease resource consumption, and increasing the allocation of limit resources to flower biomass...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Edwin E Martínez Leo, Victor E Arana Argáez, Juan J Acevedo Fernández, Rosa Moo Puc, Maira R Segura Campos
Inflammation is considered to be a major risk factor for the pathogenesis of chronic non-communicable diseases. Macrophages are important immune cells, which regulate inflammation and host defense by secretion of proinflammatory mediators. Obtaining biopeptides by enzymatic hydrolysis adds value to proteins of vegetative origin, such as Mucuna pruriens L. The present study evaluated the effect of enzymatic digestion of protein derivatives obtained from M. pruriens L. on the production of proinflammatory mediators by BALB/c mouse macrophages...
April 25, 2018: Applied Biochemistry and Biotechnology
Shoji Segami, Takaaki Tomoyama, Shingo Sakamoto, Shizuka Gunji, Mayu Fukuda, Satoru Kinoshita, Nobutaka Mitsuda, Ali Ferjani, Masayoshi Maeshima
Inorganic pyrophosphate (PPi) is a phosphate donor and energy source. Many metabolic reactions that generate PPi are suppressed by high levels of PPi. Here, we investigated how proper levels of cytosolic PPi are maintained, focusing on soluble pyrophosphatases (AtPPa1 to AtPPa5; hereafter PPa1 to PPa5) and vacuolar H+-pyrophosphatase (H+-PPase, AtVHP1/FUGU5) in Arabidopsis thaliana. In planta, five PPa isozymes tagged with GFP were detected in the cytosol and nuclei. Immunochemical analyses revealed high abundance of PPa1 and the absence of PPa3 in vegetative tissue...
April 24, 2018: Plant Cell
Sanne B Overdijkink, Adeline V Velu, Ageeth N Rosman, Monique Dm van Beukering, Marjolein Kok, Regine Pm Steegers-Theunissen
BACKGROUND: A growing number of mobile health (mHealth) technology-based apps are being developed for personal lifestyle and medical health care support, of which several apps are related to pregnancy. Evidence on usability and effectiveness is limited but crucial for successful implementation. OBJECTIVE: This study aimed to evaluate the usability, that is, feasibility and acceptability, as well as effectiveness of mHealth lifestyle and medical apps to support health care during pregnancy in high-income countries...
April 24, 2018: JMIR MHealth and UHealth
Vanderson Carvalho Fenelon, Juliana Harumi Miyoshi, Camila Sampaio Mangolim, Aline Satomi Noce, Luciana Numata Koga, Graciette Matioli
The study comparatively evaluated diverse strategic models of cyclodextrin (CD) production by the CGTase of Bacillus firmus strain 37: continuous production and repetitive batches in ultrafiltration systems; immobilization of CGTase on curdlan and vegetable sponge natural supports; the use of the glycyrrhizin complexing agent to modulate CGTase selectivity in favor of γ-CD production. All strategies had in common the possibility of separation of CGTase from its inhibitory products and its reuse. In the continuous production model, at 48 h of assay, the highest productivity and selectivity for β-CD were obtained, 1...
July 15, 2018: Carbohydrate Polymers
T C Yang, P Sahota, K E Pickett, M Bryant
BACKGROUND: Food insecurity has been associated with dietary intake and weight status in UK adults and children although results have been mixed and ethnicity has not been explored. We aimed to compare prevalence and trajectories of weight and dietary intakes among food secure and insecure White British and Pakistani-origin families. METHODS: At 12 months postpartum, mothers in the Born in Bradford cohort completed a questionnaire on food security status and a food frequency questionnaire (FFQ) assessing their child's intake in the previous month; at 18 months postpartum, mothers completed a short-form FFQ assessing dietary intake in the previous 12 months...
April 24, 2018: Nutrition Journal
Sheng Chang, Bingfang Wu, Nana Yan, Jianjun Zhu, Qi Wen, Feng Xu
In this study, modified perpendicular drought index (MPDI) models based on the red-near infrared spectral space are established for the first time through the analysis of the spectral characteristics of GF-1 wide field view (WFV) data, with a high spatial resolution of 16 m and the highest frequency as high as once every 4 days. GF-1 data was from the Chinese-made, new-generation high-resolution GF-1 remote sensing satellites. Soil-type spatial data are introduced for simulating soil lines in different soil types for reducing errors of using same soil line...
April 23, 2018: Sensors
Lynda Frassetto, Tanushree Banerjee, Neil Powe, Anthony Sebastian
Modern Western diets, with higher contents of animal compared to fruits and vegetable products, have a greater content of acid precursors vs. base precursors, which results in a net acid load to the body. To prevent inexorable accumulation of acid in the body and progressively increasing degrees of metabolic acidosis, the body has multiple systems to buffer and titrate acid, including bone which contains large quantities of alkaline salts of calcium. Both in vitro and in vivo studies in animals and humans suggest that bone base helps neutralize part of the dietary net acid load...
April 21, 2018: Nutrients
Bernhard A Huber
The South American genera Mesabolivar González-Sponga, 1998 and Carapoia González-Sponga, 1998 are among the most species-rich pholcid genera in the Neotropics. Representatives of both genera occupy a wide range of microhabitats from the leaf litter to high among the vegetation, resulting in a morphological and behavioral diversity that complicates not only identification in the field but also the establishment of generic limits. The present paper is primarily an effort to improve the foundation for future work on these genera by describing new species and unknown sexes, by redescribing poorly known species, and by adding distribution data for known species...
March 18, 2018: Zootaxa
Zuhair S Amr, Mohammad A Abu Baker, Mazin Qumsiyeh, Ehab Eid
Distributional and ecological data were given to all rodents of Jordan. The rodent fauna of Jordan consists of 28 species with 20 genera in eight families (Cricetidae, Dipodidae, Gliridae, Hystricidae, Muridae, Myocastoridae, Sciuridae,and Spalacidae), including four introduced species.Keys for families and species were provided, along with diagnosis for each species and cranial illustrations for most species. Habitat preference and zoogeographic affinities of rodents in Jordan wereanalyzed, as well as their status and conservation...
March 18, 2018: Zootaxa
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