Results 61 to 70 of about 46,644 (206)
Pile foundation has been widely used in supporting various structures such as bridges and tall buildings in Taiwan. With the development of mountainous areas, pile foundation has been used to mitigate slope movement.
Chi-Xun Tsai +3 more
core
在目前的城市土壤污染中,重金属污染构成了典型的土壤污染来源。城市土壤如果含有超标的重金属,则会造成程度比较显著的城市土壤污染。在情况严重时,遭受重金属污染的城市土壤环境还会威胁到城市居民的日常饮食安全,增大了土壤生态污染的风险。因此对于城市土壤遭受重金属污染的状况而言,基本思路在于明确土壤重金属污染的成因,结合城市土壤的污染情况探求防治土壤污染的举措。
万荣 董
semanticscholar +1 more source
Restoration of monoculture in protected and marginal areas can be organized into two phases (1) identification and prioritization of restoration sites based on remote sensing or field survey then assessing degradation level, and (2) implementation of appropriate restoration interventions.
Liang Song +9 more
wiley +1 more source
采用野外观测与室内模拟试验相结合的方法,研究了湿地土壤和垦殖10年的农田耕作后土壤呼吸通量、微生物量碳、土壤基础呼吸、土壤qCO2值、水溶性有机碳的动态特征。研究结果表明:小叶章湿地耕作后,土壤含水量明显下降 ...
张磊
doaj
为系统评价黄土丘陵沟壑区在"退耕还林(草)"工程实施后不同退耕模式下的土壤水分涵养功能,选取0-200 cm土层的蓄水量、土壤含水量分层比、土壤水吸力和土壤含水量年际变化率作为土壤层水分蓄存、渗透、保持和稳定性的表征指标,分别对比了不同退耕模式下的土壤水文性质。结果表明:(1)各退耕模式下土壤蓄水量差异显著,撂荒模式的土壤蓄水量最高,为还灌和还乔模式下的1.6,1.7倍;(2)还乔模式下表层土壤水分的渗透性最优,深层土壤水分的渗透潜力最大;(3)各退耕模式的土壤持水性差异显著 ...
葛俸池, 许明祥
doaj
Influence of the Rainfall Parameters on the Stability of Landslide Dams [PDF]
This study investigates transient seepage using a two-phase flow scheme in finite difference code, FLAC. The saturation of pore water pressure distribution and the stability of the assumed landslide dams are calculated.
Fan-Chieh Yu +7 more
core
Occurrences of dust storms and long‐distance movement of dust across landscapes is constantly increasing in south Asia. This dust is expected to have profound impact on vegetation health and sustainability as dust may contribute to nutrient budgets of the forest ecosystems, while it could impart various stresses to the plants.
Shree P. Pandey +2 more
wiley +1 more source
萨拉乌苏河流域150 ka BP 以来的粒度旋回 [PDF]
萨拉乌苏河流域米浪沟湾地层剖面150 ka BP 以来古流动砂丘砂与河湖相和古土壤在粒度上具有多次显著的粗细韵律交替变化, 粒度参数- M z、R、Sk、Kg 和SC/ D 亦随之响应为多波动峰谷交替的态势。同时, 粒度特征值- 5 5、5 16、5 25、5 50、5 75、5 84、5 95 相应地表现为非常有节奏地跳动。据此, 将米浪沟湾剖面划分为27 个粒度粗细沉积旋回, 并认为其是150 ka BP 以来在东亚冬夏古代季风交替影响下沙漠演变的一个颇为完整的气候- 地质过程记录。The ...
Jin, H +8 more
core
现如今,我国的土壤重金属污染事件发生频率明显提高,其直接影响着人们的身体健康和农业生产的稳定性。对此,社会也更加关注环境保护。土壤金属污染的修复与处理在环境保护中尤为关键。本文就将分析重金属污染土壤修复技术及工程应用,以改善土壤环境。
昕 黄
semanticscholar +1 more source
Effects of crop species on soil functions and soil multifunctionality are species‐specific
Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil multifunctionality is essential for sustainable agriculture, as soils not only need to support crop growth but also maintain soil biodiversity and sustain other critical ecosystem functions.
Zhaoqi Bin +4 more
wiley +1 more source

