Deng JB^1,2*, G Gao³, KS Ahmad⁴, XQ Luo^1,2, FT Zhang^1,2, S Li^1,2, RW Yang⁵

Phyton-International Journal of Experimental Botany, Vol.87, pp. 156-161, 2018, DOI:10.32604/phyton.2018.87.156

Abstract Six mitochondrial (mtDNA) markers, cox2, ccmFn, ccb256, cox3, Nad4L-orf25, and atp4, were combined to assess genetic relationships by using Maximum Likelihood (ML) and Maximum parsimony (MP). This was done among nine Chinese Curcuma herbal species, included two rare species which are difficult to distinguish from their morphological characters. The relationships are very close among the nine species, and the overall distance was 0.018. In this study, the backbone of such nine species was achieved firstly to date, and being divided into two groups with moderate to strong bootstrap support. Both the ML and MP tree were obtained with similarity topologies… More >

Xin ZM^1,2, MH Liu², Q Lu^1,3, CA Busso⁵, YJ Zhu^1,3, Z Li², YR Huang², XL Li2, FM Luo², F Bao¹, JQ Qian^4*, YH Li^1,3*

Phyton-International Journal of Experimental Botany, Vol.87, pp. 144-155, 2018, DOI:10.32604/phyton.2018.87.144

Abstract Leaf δ¹³C is widely used to explain plant strategies related to resource availability in different environments. However, the coupled response of leaf δ¹³C to precipitation and temperature as well as the relationship between leaf δ¹³C and leaf traits remain unclear. The leaf δ¹³C and its relationship with leaf traits [leaf size (LS), leaf length (LL), leaf width (LW), leaf length to width ratio (L:W), specific leaf area (SLA) and mass-based leaf nitrogen concentration (N_mass)] were investigated on the dominant shrub species Nitraria tangutorum Bobr. in the arid region (Dengkou and Minqin) of northwestern China under the simulated increasing precipitation (PGS)… More >

Han DY^1,2, YF Yang²

Phyton-International Journal of Experimental Botany, Vol.87, pp. 113-122, 2018, DOI:10.32604/phyton.2018.87.113

Abstract Rapid and precise assessment of biodiversity is a central issue in conservation biology and biodiversity science. Higher taxonomic units and life form-based morphospecies were utilised to assess plant diversity patterns at the habitat scale in temperate meadow steppe, Songnen Plain, China. Patch area, taxonomic composition (families and genera) and life form (based on Raunkiaer’s life forms, and stem and root growth forms) were recorded in five communities. Taxonomic unit-based hierarchical diversity indices (HDI) and life form-based hierarchical diversity indices (HLDI) were calculated. Twenty-six families, 67 genera, and 87 species were recorded in the five communities. HDI and HLDI were significantly… More >

Li QK¹, J Tang², T Wang³, D Wu², CA Busso⁴, RF Jiao², XJ Ren²

Phyton-International Journal of Experimental Botany, Vol.87, pp. 40-50, 2018, DOI:10.32604/phyton.2018.87.040

Abstract Fresh water is a valuable nonrenewable resource and plays an important role in maintaining economic and social development. Considering its large population and consumption potential, water resource deficits will certainly not allow a sustainable development of basic industries in China in the near future. Application of sewage irrigation, to some extent, was regarded as an alternative way to solve the problem of agricultural water shortage in some areas (such as North China). However, accompanied with an extensive implementation of sewage irrigation, some problems with sewage irrigation became gradually obvious in agriculture, especially those related with pollution and destruction of farmlands.… More >

Jianar A, JH Yuan, YF Yang

Phyton-International Journal of Experimental Botany, Vol.87, pp. 32-39, 2018, DOI:10.32604/phyton.2018.87.032

Abstract Ulmus macrocarpa Hance can form monodominant woodlands in the semiarid Keerqin sandy lands, China. Methods of sampling at meter intervals from the bases of trees at the woodland edges and isolated trees, respectively, were employed along vertical sections in different directions. Using statistical methods based on the density function of the Weibull distribution, the patterns of seed dispersal and the spatial expansion response of U. macrocarpa, which is a typical anemochorous plant, were analyzed. Although as an effect of the wind direction varying owing to the monsoon, there were differences in the degree of dispersal of seeds in terms of… More >

Yi TANG^1,*, Carlos Alberto BUSSO²

BIOCELL, Vol.42, No.2, pp. 61-66, 2018, DOI:10.32604/biocell.2018.07015

Abstract Elm (Ulmus pumila L.) is the dominant tree species in the sparse elm woodland, the original vegetation in the Horqin Sandy Land. The effects of changes in precipitation on U. pumila trees have not been fully studied. We determined a dynamic model by considering the five stages in the U. pumila life cycle, i.e. seed, seedling, and juvenile, mature and over-mature tree stages. The effects of changes in precipitation on population density and age structure were then evaluated. Population density, after averaging all study developmental morphology stages, ranged from 16.67 individuals/m2 to 25.01 individuals/m2 under a mean annual precipitation (MAP)… More >

Zhu Jianming, Zhang Hongtao, Wang XiChun, XU Bingye

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.1, pp. 20-20, 2011, DOI:10.3970/icces.2011.017.020

Abstract Aiming at the limitation and the insufficiency of the research methods for the slope stability in the open-pit and underground combined mining, firstly according to the characteristic of the slope stability in the open-pit and underground combined mining, and the limit analysis method of the slope stability based on the upper bound theorem of the plasticity mechanics, the maneuvering displacement field for the subsidence rock mass of the underground long-wall mining is established, for the subsidence rock mass the function equation is established using the plastic limit analysis method. Secondly, using this method this paper researches the surface subsidence rock… More >

L. H. Feng¹, J. H. Feng¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.5, No.1, pp. 15-20, 2008, DOI:10.3970/icces.2008.005.015

Abstract The primary scheme of unilaterally pursuing fast economic development at the expense of the environment and the secondary scheme focusing on environmental protection as the primary goal by slowing economic development are both undesirable for Yiwu. The third scheme balancing economic development with environmental protection is the most effective scheme. More >

Lihui Wang¹, Feng Qi¹, Xin Shen^2,3,*, Jinliang Huang¹

CMES-Computer Modeling in Engineering & Sciences, Vol.119, No.2, pp. 331-348, 2019, DOI:10.32604/cmes.2019.04268

Abstract Multiple cropping index (MCI) is a very important indicator in crop production and agricultural intensification, which represents the utilizing degree of agriculture resources at time scale and the effective utilization situation of arable land. The objective of this paper is monitoring multiple cropping index of Henan province of China according to the time series of MODIS (Moderate-Resolution Imaging Spectroradiometer) EVI (Enhanced Vegetation Index) after Savitzky-Golay filter processing from the year 2006 to 2011.The results revealed that this method could provide an effective way to monitor multiple cropping index, and the method of no additional authentication data is independent and reliable.… More >

Zhangzhen Sun¹, Tianhe Xu^1,*, Fan Gao¹, Chunhua Jiang¹, Guochang Xu¹

CMES-Computer Modeling in Engineering & Sciences, Vol.119, No.2, pp. 263-280, 2019, DOI:10.32604/cmes.2019.04425

Abstract Abnormal effects in GPS broadcast ephemerides can have a significant effect on real-time navigation and positioning solutions that use the orbit and clock error data provided by GPS broadcast ephemerides. This paper describes three types of non-integer-hour navigation data in GPS broadcast ephemeris data. Compared with GPST integer hour data, we find that there are two types of data blocks for non-integer-hour navigation containing gross errors with different levels of precision, which is reflected in the user range accuracy (URA) of the broadcast ephemeris. These gross errors can cause large deviations when using the GPS broadcast ephemeris for orbit calculation… More >