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The Effect of Vegetation Restoration in Soil Organic Carbon Storage 被引量:1
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作者 Taanloumi Said Bacar Yiben Cheng +2 位作者 Yunqi Wang Kenza Kaboul Namir Domingos Raimundo Lopes 《Open Journal of Soil Science》 CAS 2022年第9期427-445,共19页
This review paper has been made to assess the past studies reviewed regarding vegetation restoration and its impact on soil organic carbon content. A Vegetation Restoration is an influential technique that can be used... This review paper has been made to assess the past studies reviewed regarding vegetation restoration and its impact on soil organic carbon content. A Vegetation Restoration is an influential technique that can be used to respond to these effects. As a response to the global biodiversity crisis, more restoration actions have been taken. The European Union Council’s results on kinds of diversity after 2010 highlight words like stopping biodiversity loss and the breakdown of ecological systems in the European Union. The United Nations Conference on Biological Diversity’s growth strategy for 2022, which includes restoring at least 15% of degraded ecosystems, has made this possible. Soil types are among the most vulnerable resources on the planet due to factors such as climate change, land degradation, and the reduction of biodiversity. Organic Carbon, the top meter of soil, could potentially store three times as much carbon as is found in the air and almost twice as much as in plants. For the systematic literature review, past papers on vegetation restoration have been extracted from the latest papers of 2013 and onwards to 2022. The summary of results included key findings of the papers, the interpretation of papers reviewed, and the relevant references. Thirty papers were reviewed and selected from authentic databases and assessed that vegetation restoration significantly affects soil organic carbon (SOC). The findings also exhibit that the primary sources of prediction for SOC dynamics include changes in soil properties, quality, the number of carbon inputs, and the composition of the C pool. Vegetation restoration also plays an important role in improving the services of ecosystems such as controlling the erosion of soil and increasing the carbon sequestration. Moreover, some papers concluded that vegetation restoration positively influences on the SOC. Moreover, to increase the generalizability of the study, implications and future research indications have also been included in the end. 展开更多
关键词 Vegetation Restoration soil proportion soil Organic Carbon SOC
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软土地段地基系数的比例系数试验研究
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作者 李雷 钟昌卫 +2 位作者 徐伟宸 唐冕 宋旭明 《高速铁路技术》 2022年第6期57-62,共6页
高速铁路对桥梁纵横向刚度要求严格,而地基系数的比例系数m是影响桥梁刚度的重要参数。为获得设计工点m的合理取值,本文通过现场单桩水平静载试验测试单桩水平承载力、位移和弯矩分布情况,得到深厚软土地段桩顶位移和桩身应变随水平力... 高速铁路对桥梁纵横向刚度要求严格,而地基系数的比例系数m是影响桥梁刚度的重要参数。为获得设计工点m的合理取值,本文通过现场单桩水平静载试验测试单桩水平承载力、位移和弯矩分布情况,得到深厚软土地段桩顶位移和桩身应变随水平力的变化规律,根据理论公式计算出m值并用公式进行拟合,从而给出了桥梁设计中单桩m值的建议值,结果表明:(1)桩基水平位移随水平力增加呈非线性变化,m值随桩基地面处位移呈幂函数衰减;(2)设计工点单桩m值为10 263~11 554 kPa/m^(2),与规范取值(3 000~5 000 kPa/m^(2))相比偏大。本文研究可为类似工程提供参考。 展开更多
关键词 软土地区 地基系数的比例系数 水平静载 试验研究
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单桩水平静载荷试验参数取值问题探讨 被引量:1
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作者 王中荣 郭海峰 尚晓 《电力勘测设计》 2018年第A01期95-103,共9页
单桩水平静载荷试验是确定水平承载力最可靠的方法,通过现场单桩水平静载荷试验成果分析,建立地基土水平抗力系数的比例系数m与水平位移的关系曲线,同时结合大量试桩资料,对不同桩型、不同地层性桩,探讨水平承载力特征值(即设计值)以及... 单桩水平静载荷试验是确定水平承载力最可靠的方法,通过现场单桩水平静载荷试验成果分析,建立地基土水平抗力系数的比例系数m与水平位移的关系曲线,同时结合大量试桩资料,对不同桩型、不同地层性桩,探讨水平承载力特征值(即设计值)以及地基土水平抗力系数的比例系数m的经验取值方法。为在没有试桩资料的情况下,较精确确定地基土水平抗力系数的比例系数m提供一定的参考依据。 展开更多
关键词 地基土比例系数m 单桩水平静载荷试验 水平承载力
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浅议土壤污染治理责任的转移条件
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作者 王倩 《山西省政法管理干部学院学报》 2019年第4期19-22,共4页
污染者负担原则是环境领域的基础性准则,是土壤污染治理领域的根本原则。但是,在土地买卖的情形下,由于转让方的难以确定性,为迅速防治土壤污染,由受让方承担土壤污染的治理责任并赋予其事后向污染主体追偿的权利具有合理性。基于行政... 污染者负担原则是环境领域的基础性准则,是土壤污染治理领域的根本原则。但是,在土地买卖的情形下,由于转让方的难以确定性,为迅速防治土壤污染,由受让方承担土壤污染的治理责任并赋予其事后向污染主体追偿的权利具有合理性。基于行政法上的比例原则,政府应最小程度地承担土壤污染的兜底责任,以维护纳税人的利益,但基于政府的环保职责,在没有主体修复土壤污染时,政府应有所作为。 展开更多
关键词 土壤污染 污染者负担 比例原则
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土壤污染修复责任的溯及力及其限制
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作者 韩梅 《行政法学研究》 北大核心 2023年第5期167-176,共10页
土壤污染具有隐蔽性、滞后性、累积性,有关国家和地区土壤污染修复责任的相关规定通常溯及既往,以解决法律事实早于法律施行之日的责任承担问题。我国《土壤污染防治法》在该问题上的规定不是十分明确,导致实践中法律适用不一致、同案... 土壤污染具有隐蔽性、滞后性、累积性,有关国家和地区土壤污染修复责任的相关规定通常溯及既往,以解决法律事实早于法律施行之日的责任承担问题。我国《土壤污染防治法》在该问题上的规定不是十分明确,导致实践中法律适用不一致、同案不同判的情况时常出现。从解释论的角度综合分析现有法律规范,土壤污染修复责任确实具有溯及既往的效力,且构成真正溯及既往。但基于比例原则、信赖保护原则,溯及既往的适用范围应予严格限制,具体可从溯及时间、违法前提、排污行为、污染范围四方面对溯及适用的相关规则予以明确、细化。 展开更多
关键词 土壤污染修复责任 真正溯及既往 比例原则 信赖保护原则
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