Results 21 to 30 of about 7,800 (162)

Evolutionary and environmental determinants of heat tolerance and acclimation capacity in herpetofauna

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Exploring heat tolerance and acclimation capacity can provide an effective approach to evaluating species’ sensitivity to extremely high temperatures due to climate warming. Despite some work on amphibian and reptile thermophysiological adaptation, related questions remain. We reviewed the literature to provide a synthesis of worldwide data on
Zijian Sun   +8 more
wiley   +1 more source

Design and implementation of City Population Database System Based on Oracle Spatial [PDF]

open access: yes, 2015
人口信息蕴藏着政治、经济、社会、生态等许多方面的信息,通过分析城市人口分布、人口密度对于城市的规划和发展具有重要的意义。GIS是一门集成地理学、计算机科学等多门学科于一体的综合性学科,其最重要的特点是可以处理和管理地理空间数据,具有强大的空间查询、空间分析、空间统计以及制图功能。通过结合GIS的空间分析和空间统计功能,我们不仅可以直观地看到人口的空间分布情况,而且还可以得到各类与地理位置相关的统计数据。 本文在《上海市居委村委地理信息化及属性数据处理》项目的支持下,以上海市村委、居委和街道展开信息采集 ...
汤剑雄
core  

Herbivore species and patch heterogeneity modulate grazing‐induced shifts in soil nematode trophic structure and energy flux

open access: yesFunctional Ecology, Volume 40, Issue 1, Page 163-175, January 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma   +12 more
wiley   +1 more source

Non‐Passerine Birds in Zoos: A Global Approach on Distribution Patterns of Threatened Birds in Zoological Institutions 动物园中非雀形目鸟类:全球动物机构中受威胁鸟类的分布模式研究

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 600-615, December 2025.
Only 1541 (34.2%) of 4503 recognized non‐passerine bird species are held in ZIMS institutions worldwide. Approximately ~83% of the species kept globally are classified as non‐threatened and ~16% as threatened. To improve the conservation of threatened birds, a shift toward keeping threatened species should be considered within ex situ management ...
Anna Wahle   +6 more
wiley   +1 more source

黑龙江省珍稀濒危野生动物地理信息管理系统的构建

open access: yes野生动物学报, 2008
以黑龙江省珍稀濒危野生动物调查数据为基础,论述了建立黑龙江省珍稀濒危野生动物地理信息管理系统的意义、目的。介绍了应用面向对象程序设计语言Visual Basic 6.0和地理信息系统软件MapInfo及其控件MapX开发黑龙江省珍稀濒危野生动物地理信息管理系统的总体思想、技术路线及实现的功能。该系统对提高野生动物资源管理水平有着重要意义。
杨娇, 张明海, 孙红瑜, 李林
doaj  

Greenhouse gas emissions from croplands of China [PDF]

open access: yes, 2003
China possesses cropland of 1.33 million km 2. Cultivation of the cropland not only altered the biogeochemical cycles of carbon (C) and nitrogen (N) in the agroecosystems but also affected global climate.
Bohan, Liao   +13 more
core   +1 more source

Nutritional and Physiological Markers Are Mediated by Seasonality and Forest Access in Captive Coquerel's Sifakas 圈养科氏冕狐猴 (Coquerel's Sifakas) 的营养和生理指标受季节性和森林通道的影响

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 652-664, December 2025.
We profiled nutritional and physiological markers in captive sifakas, endangered primates from Madagascar, managed in expansive, non‐native forest enclosures. Variation in many markers reflects freely foraged diets and the energy required to maintain homeostasis under more naturalistic conditions.
Lydia K. Greene   +5 more
wiley   +1 more source

Design and Implementation of Tourism Management System in Hezhou City [PDF]

open access: yes, 2015
摘要 在信息时代,旅游行业也与时俱进开展信息化建设,在业内的信息管理、企业经营和市场推广方面使用信息技术的方面越来越广,同时旅行者和企业经营者通过网络获取旅游信息的方式也是越来越便捷。通过对ARCGIS地理信息系统的研究,和对Web技术平台的技术分析,得出结论,利用信息化技术进行网络旅游管理信息系统的开发已经具备了条件。 该项目针对贺州市的旅游资源进行旅游管理系统的设计与实现,通过对旅游行业的现状、信息化技术应用、旅游系统含义等多个方面进行分析,在旅游管理者、旅游景点、旅行社 ...
肖鸿
core  

Identifying potentially suitable and accessible refugia to mitigate impacts of an emerging disease on a rare tree

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract Identifying refugia from emerging threats is vital to ensure the persistence of rare and threatened species, but modeling habitat distribution for these species is challenging and the role of people in refuge management is rarely considered. Myrtle rust is an emerging infectious disease that represents a grave threat to the rare wetland tree ...
Sarah M. Herbert   +7 more
wiley   +1 more source

Design and Implementation of City Traffic Guidance System Based on GPS Equipped Floating Car [PDF]

open access: yes, 2015
随着经济的发展及国民生活水平的提高,越来越多的人选择开车出行,这势必造成交通的拥堵。交通拥挤已经成为各个城市生活的主要问题,在城市建设基本完成的情况,如何充分利用路网的空间成了目前智能交通系统的一个重要的课题。 本文通过将行驶在城市各个方位的出租车作为采集数据的浮动车,将采集的GPS信息在GIS系统中进行处理分析,直观的判断展现路网拥挤度情况,为出行者和监管部门的决策提供实时的信息依据。 结合三亚的情况,出租车作为浮动车,在信息采集技术中首先确定浮动车采样时间间隔和浮动车样本量,之后数据会进行预处理 ...
林小琪
core  

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