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Using strategically applied grazing to manage invasive alien plants in novel grasslands

Ecological Processes 2013年第1期2卷 275-285页

作者： jen.ifer firn.jodi n.price Ralph DB Whalley School of Earth Environmental and Biological SciencesQueensland University of TechnologyBrisbaneQLD 4001Australia School of Plant Biology University of Western AustraliaCrawleyWA6009Australia Botany University of New EnglandArmidaleNSW 2352Australia

Introduction:novel ecosystems that contain new combinations of invasive alien plants(IAPs)present a challenge for ***,control strategies that focus on the removal of the invasive species and/or restoring historical disturbance regimes often do not provide the best outcome for long-term control of IAPs and the promotion of more desirable plant ***:This study seeks to identify the primary drivers of grassland invasion to then inform management practices toward the restoration of native *** revisiting both published and unpublished data from experiments and case studies within mainly an Australian context for native grassland management,we show how alternative states models can help to design control strategies to manage undesirable IAPs by manipulating grazing ***:Ungulate grazing is generally considered antithetical to invasive species management because in many countries where livestock production is a relatively new disturbance to grasslands(such as in Australia and new Zealand as well as Canada and the USA),selective grazing pressure may have facilitated opportunities for IAPs to *** find that grazing stock can be used to manipulate species composition in favour of the desirable components in pastures,but whether grazing is rested or strategically applied depends on the management goal,sizes of populations of the IAP and more desirable species,and climatic and edaphic ***:Based on our findings,we integrated these relationships to develop a testable framework for managing IAPs with strategic grazing that considers both the current state of the plant community and the desired future state—*** application of the principles behind reclamation,rehabilitation,restoration or all three—over time.

关键词： grassland grazing Canada

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Continuous Symmetry Analysis of the Effects of City Infrastructures on Invariant Metrics for House Market Volatilities

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Computer Modeling in Engineering & Sciences 2022年第12期133卷 619-638页

作者： Chien-Wen Lin jen-Cheng Wang Bo-Yan Zhong Joe-Air Jiang Ya-Fen Wu Shao-Wei Leu Tzer-En nee Department of Electrical Engineering Taiwan Ocean UniversityKeelung20224Taiwan Department of Computer Science National Taipei University of EducationTaipei10671Taiwan Department of Electronic Engineering Chang Gung UniversityTao-Yuan City33302Taiwan Department of Biomechatronics Engineering National Taiwan UniversityTaipei10617Taiwan Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung40447Taiwan Department of Electronic Engineering Ming Chi University of TechnologyNew Taipei City24301Taiwan Artificial Intelligence Research Center Chang Gung UniversityTao-Yuan City33302Taiwan

The invariant metrics of the effects of park size and distance to public transportation on housing value volatilities in Boston,Milwaukee,Taipei and Tokyo are *** reveal a Cobb-Douglas-like *** scaleinvariant exponents corresponding to the percentage of a green area(a)are 7.4,8.41,14.1 and 15.5 for Boston,Milwaukee,Taipei and Tokyo,respectively,while the corresponding direct distances to the nearest metro station(d)are−5,−5.88,−10 and−10,for Boston,Milwaukee,Taipei and Tokyo,*** multiphysics-based analysis provides a powerful approach for the symmetry characterization of market *** scaling exponent ratio between park area percentages and distances to metro stations is approximately 3/*** scaling exponent ratio expressed in the perceptual stimuli will remain invariant under group *** to Stevens’power law,the perception-dependent feature spaces for parks and public transportation can be described as two-and three-dimensional conceptual *** on the prolongation structure of the Schroinger equation,the SL(2,R)models are used to analyze the house-price *** with Shepard’s law,the rotational group leads to a Gaussian pattern,exhibiting an extension of the special linear group structure by embedding SO(3)■R(3)in SL(2,R).The influencing factors related to cognitive functioning exhibit substantially different scaleinvariant characteristics corresponding to the complexity of the socio-economic ***,the contour shapes of the price volatilities obtained from the group-theoretical analysis not only corroborate the impact of the housing pricing estimation in these cities but also reveal the invariant features of their housing markets are faced with the forthcoming sustainable development of big data technologies and computational urban science research.

关键词： Invariant metrics Schroinger equation group theory

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