Results 21 to 30 of about 7,133 (162)
Functional 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
Design and implementation of City Population Database System Based on Oracle Spatial [PDF]
, 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
Integrative 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
Integrative 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
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]
, 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
Conservation 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
Kongjian kexue xuebao, 2023 在卫星时频传递、矢量测量技术领域，有效观测数据的高精度滤波处理十分重要，其基本要求是在保留有效观测信息的同时能够降低噪声干扰，实现原始信息的高效、高精度传递。以中国地球重力场测量卫星高精度测距系统的工程研制为背景，为实现高频噪声抑制、保留低频重力场信息，基于对FIR滤波器结构的优化和窗函数的改进，提出了一种对10 Hz采样率的原始测距数据降速率、降噪滤波的算法。相比其他类似算法，所提方法同时具备降速滤波和差分运算两种功能，噪声抑制抑制度优于44%，且频率截止特性陡峭，第一旁瓣抑制度达到–94 dB ...
刘 玄, 杨 珊珊, 臧 荣春
doaj +1 more source
Design and Implementation of Tourism Management System in Hezhou City [PDF]
, 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
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Conservation Biology, Volume 39, Issue 6, December 2025.Abstract As the coverage of area‐based conservation increases across the globe, it is critical to improve understanding of the social and ecological outcomes of such measures and the pathways to their outcomes. A social–ecological systems approach to monitoring and evaluation is increasingly advocated; yet, applications remain scarce.
Natalie C. Ban +21 more
wiley +1 more source