Results 41 to 50 of about 1,445 (135)
Shuitu Baochi Xuebao, 2008 为了研究榆林地区近13年来土地利用结构变化及其趋势,本文选用1993年、2000年和2006年三期遥感影像,利用Erdas软件和ArcGIS 9.1软件,采用土地利用动态度、开发度和耗损度等指数模型,分析了榆林地区1993-2006年土地利用类型的数量变化和空间变化特征以及各地类的转移情况。结果表明:榆林地区13年来各类土地利用类型综合动态度有下降趋势;各类土地利用类型的增减在空间上变化比较大,通过统计分析显示,草地、耕地变化较快,林地、建设用地呈增长趋势,未利用地、水域面积减少;土地利用动态度 ...
胡振琪 +4 more
doaj
基于栖息地风险评价模型的海岸带滩涂湿地风险评价——以闽三角为例 [PDF]
, 2018 海岸带湿地是生物多样性最丰富、生产力最高、最具价值的生态系统之一。然而近年来,随着城市化和工业化进程的加快,我国海岸带地区的土地利用正发生深刻变化,生态风险凸显。利用2000、2005、2010和2015年的Landsat TM/ETM+和Landsat 8 OLI遥感影像,融合行政区划图与地形图,并引入一个评价多元海洋、海岸带利用对栖息地造成风险的模型,即Integrated Valuation of Ecosystem Services and Trade-offs(In VEST ...
李杨帆 +4 more
core
Spatiotemporal Characteristics and Driver Detection of Landscape Pattern and Ecological Risk in Huangshui River Basin [PDF]
, 2023 [Objective] The characteristics and driving factors of landscape pattern changes and the spatiotemporal evolution of landscape ecological risk was analyzed in order to provide a theoretical basis for integrated watershed management, watershed ecosystem ...
Li Runjie +3 more
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Hydro‐Insurgency: Weaponization of Water Resources and Infrastructure in Northeast Syria
World Water Policy, Volume 11, Issue 4, Page 924-938, November 2025.ABSTRACT This article examines the strategic weaponization of water resources by Turkey‐backed armed groups in Northeast Syria (NES) within the broader context of the Syrian civil war. As the conflict evolved, water infrastructure—dams, rivers, and irrigation systems—became central to warfare, governance, and foreign agendas. The article introduces the
Farhad Hassan Abdullah Mamshai
wiley +1 more source
Land-use Effect and Seasonal Hydrologic Controls on Nitrogen Export in Typical Sub-watersheds within Jiulong River Watershed [PDF]
, 2016 在过去的几十年里，世界范围的大部分地区都经历了由于进入近海的河流氮通量的大量增加而导致的富营养化和其它生态损害。氮、磷作为限制性营养盐，控制着河流－近海系统富营养化，威胁着我们所依赖的生态系统服务与功能。河流营养盐状况是植被、土壤、地形、气候、土地利用状况等自然和人为因素综合作用的结果，这些因素在不同时空尺度内交互作用，使得河流营养盐输出的影响机制研究更具挑战性。本研究开展亚热带流域氮输出对土地利用及水文状况季节性变动的响应，可为流域综合管理和区域用水安全提供科技支撑。 本研究通过现场监测、GIS技术 ...
赵盼盼
core
Regional Runoff Characteristics in Zhengzhou City Based on SCS-CN Model [PDF]
, 2022 [Objective] The causes of waterlogging in Zhengzhou City were studied in order to provide a reference for risk prevention and operation management of rainstorm waterlogging disasters in important parts of the urban infrastructure.
Huang Haiping +5 more
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Global Change Biology, Volume 31, Issue 11, November 2025.This study assessed the potential impacts of climate and land‐use change on soil fungal diversity across four North American biomes. We found that climate change typically caused both diversity losses and gains, particularly in coniferous forests and among arbuscular mycorrhizal fungi, whereas land‐use change mainly reduced diversity, especially in ...
Wenqi Luo +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2007 对紫色土丘陵区4种典型土地利用类型的土壤抗蚀性进行了研究,结果表明:(1)通过主成分分析,＞0.25 mm和＞0.5 mm水稳性团聚体含量、结构体破坏率能较好地衡量紫色土不同土地利用类型的土壤抗蚀性能;(2)＞0.25 mm和＞0.5 mm水稳性团聚体含量均为竹林地＞园地＞传统农耕地＞农林混作型耕地,结构体破坏率则表现为竹林地＜园地＜传统农耕地＜农林混作型耕地;(3)不同土地利用类型水稳性指数差别明显,其中竹林地为0.868,其次是园地、农林混作型耕地,分别为0.704,0.627,传统农耕地为0 ...
史晓梅, 史东梅, 文卓立
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岷江上游森林/干旱河谷交错带不同土地利用类型土壤有机碳和活性有机碳特征
Shuitu Baochi Xuebao, 2011 研究了岷江上游森林/干旱河谷交错带川滇高山栎次生林、人工刺槐林、灌木林地、灌丛地、经济林和农耕地6种土地利用类型的土壤有机碳及微生物量碳、水溶性有机碳和易氧化碳。结果表明:6种土地利用类型土壤有机碳及3种活性有机碳含量以川滇高山栎次生林高于或显著高于其他土地类型 ...
王晓君 +3 more
doaj
Conservation Biology, Volume 39, Issue 5, October 2025.Abstract Primates, 69% of which are threatened with extinction, are the third most specious order of mammals. We used primates as model taxa to examine the umbrella effects of primates on ecosystem services and the protection of other vertebrates and seed plants in Yunnan Province, China.
Yin Yang +21 more
wiley +1 more source