Results 11 to 20 of about 218,527 (154)
2007~2008年,对辽宁省东部山区野猪危害农作物进行问卷调查和实地调查,对野猪危害农作物实况及其危害的特点进行了初步分析,如危害农作物的种类、危害时间、危害农田周围的生境、危害程度和造成的经济损失等,分析探讨了造成野猪危害农作物的原因,并提出了防治措施的建议。
余海慧, 吴建平, 樊育英
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通过走访、问卷调查和样地调查,对辽西地区野兔危害情况进行了初步调查,并对调查数据进行了统计分析。结果表明:辽西地区野兔主要危害杏树,其次是刺槐、杨树和梨树等;野兔对不同林龄杏树危害差异显著。其中,对3林龄以下杏树危害严重,3林龄以上危害较轻;野兔对不同地区杏树危害程度差异显著,主要表现在对海拔较高降雨较少的地区危害程度较海拔低降雨相对多的地区高。
吴建平, 樊育英, 余海慧
doaj +2 more sources
人和野猪的冲突已经成为日益关注的问题。2010年6~10月,在黑龙江省尚志市青云林场利用走访和问卷调查对野猪危害进行了研究,并通过散布东北虎粪便、放置东北虎图像、播放东北虎声音的方法对野猪危害进行了防治并与当地居民防治野猪危害的措施进行了比较。结果如下:(1)野猪危害多在夏初至秋末,主要危害玉米和西葫芦,受危害的农田多是林缘地和林间地。(2)把野猪第2次进入农田与第1次进入农田的间隔天数作为防治措施的有效性评估指标,研究发现利用东北虎粪便、图像、声音防治野猪危害的有效期分别是3.00±0.58 d、1 ...
张丹, 刘丙万
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Perceived costs as drivers of wildlife management preferences in rural Tanzanian communities
Abstract Effectively managing human–wildlife interactions is crucial for fostering coexistence on shared landscapes. Management options are most effective when aligned with the preferences of people directly affected by wildlife, yet little is known about how socioecological factors influence these preferences.
Christian Kiffner +10 more
wiley +1 more source
Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
wiley +1 more source
[[abstract]]產業的生產活動,必然藉由使用各種生產機械或設備,利用其動力來加工所需要的產品。機械動力可以幫助產品的加工;但是相對地也有可能危害到操作者的安全。 任何機械設備,只要有動力能量的存在,就會有潛在的危害,一般機械性危害型式包括擠壓危險、剪斷危險、切斷危險、絞入危險、陷入危險、衝擊危險、刺傷危險、磨擦危險、高壓液體噴射危險等。 近年來,在機械操作上發生了很多工安意外,導致許多工廠被迫停工,因此,根據本研究做出有關車床、沖床操作危害之改善,更能在維修作業流程中得到最好的效率 ...
莊淯丞;王雨安;詹岳樺;張晉維
core +1 more source
ABSTRACT As the Narrative Policy Framework (NPF) begins to unpack issues of power and narratives, the main focus has been on power‐over and domination rather than more transformative notions of power‐to and empowerment. This article draws on insights from gender and policy studies and suggests that the NPF benefits from adopting a multifaceted notion ...
Hilda Broqvist
wiley +1 more source
Two Nationalisms, One City: Official and Diasporic Framings of the 2019 Hong Kong Protests
ABSTRACT This study analyses the contested collective memories of the 2019 Anti‐Extradition Law Amendment Bill (Anti‐ELAB) movement, investigating how the Hong Kong government and diaspora construct divergent narratives to shape national identity and nationalism.
Isaac Iu
wiley +1 more source
通过荒溪调查与分类 ,在分析北京山区山洪及泥石流灾害发生的历史、影响因子、灾害特点的基础上 ,建立了北京山洪及泥石流灾害空间预报信息系统 ,并对北京山区山洪及泥石流灾害空间分布进行了预报。建立的空间预报信息系统能查询、更新、管理各类荒溪危险区分布及基本情况 ,能准确预报山洪及泥石流灾害发生的位置及分布范围 ...
周金星
doaj +2 more sources
针对边坡稳定性监测系统复杂工况条件下的设备防雷问题,分析直击雷和感应雷两种引起设备损坏的雷电危害和其危害方式。根据不同种类雷电危害的特点及监测设备的防护需求,设计采用由多针型避雷针、信号线屏蔽套管、防雷器、多级电源开关和人工接地网等装置构成的外部防雷措施和内部防雷措施结合的综合防雷系统,为边坡稳定性监测设备提供防雷保护,保证设备安全平稳运行。
李建宇 +4 more
doaj

