Results 31 to 40 of about 11,279 (160)
, 2022 植物已被广泛用于改善岩土设施的服役性能。然而，植物生长对填埋场多层覆盖系统防渗性能的影响尚不清楚。本研究通过在深圳下坪固体废弃物填埋场开展为期两年的现场试验，并利用数值模拟进行对比与参数化分析，旨在量化湿润气候下植物生长对土体水力性质以及三层覆盖系统防渗功能的影响。经研究发现，土体饱和渗透系数(ks)随根长密度(RLD)的增加呈线性下降。相比裸露土，植草土 ks、入渗量和入渗速率分别降低55%，18%和35%。这导致在现场监测期间植草覆盖系统中维持的吸力明显高于裸露覆盖系统，数值分析与实测结果相一致 ...
吴宏伟 +4 more
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Functional Ecology, Volume 38, Issue 11, Page 2433-2446, November 2024.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phosphorus (P) acquisition strategy is considered to be an intrinsic driver behind plant succession. However, variations in plant P acquisition strategies in connection to soil P fraction changes after wetland drainage remain unclear.
Zhenhui Jiang +6 more
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Commentary to: An integrated historical study on human–tiger interactions in China 中国境内人虎互动的综合历史研究
Integrative Conservation, Volume 3, Issue 3, Page 149-151, September 2024.Abstract The tiger holds a revered position in Chinese culture, symbolizing power and strength, yet its coexistence with human populations has often been marked by tension and conflict. Understanding the historical dynamics of human‐tiger relations is essential for comprehending the current state of tiger populations and shaping future coexistence with
Pablo Villalva
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Change in cyclone disaster vulnerability and response in coastal Bangladesh
Disasters, Volume 48, Issue 2, April 2024.The number of deaths owing to tropical cyclones in Bangladesh has significantly reduced. Category 4 Cyclone Gorky in 1991 and Sidr in 2007 caused 147,000 and 4,500 deaths respectively, whereas Category 1 Cyclone Mora in 2017 resulted in six. Face‐to‐face interviews with 362 residents, participant observation, and focus‐group discussions answer a ...
Edris Alam +4 more
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Shuitu Baochi Xuebao, 2017 以黄土丘陵区4种典型植物种群（狼牙刺、白羊草、铁杆蒿、达乌里胡枝子）为研究对象，采用野外采样、室内模拟试验与分析相结合的方法，对0—30 cm土层的各径级根系密度参数（根长密度、根体积密度、根表面积密度）与土壤理化性质、土壤分离速率间的关系进行了研究。结果表明：（1）4种植物的根系径级主要集中在0＜D≤1.0 mm之间，86%～93%的根长和46%～61%的根系表面积分布在此范围内，且根系径级越大，根系各密度参数越小；（2）4种植物各径级根密度参数对土壤理化性质（容重、有机质、团聚体）的影响各不相同 ...
葛芳红 +5 more
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The International Grief Questionnaire (IGQ): A new measure of ICD‐11 prolonged grief disorder
Journal of Traumatic Stress, Volume 37, Issue 1, Page 141-153, February 2024.Abstract Prolonged grief disorder (PGD) is included in the 11th version of the International Statistical Classification of Diseases and Related Health Problems (ICD‐11). This study sought to test the validity and reliability of a new brief measure to screen for ICD‐11 PGD—the International Grief Questionnaire (IGQ).
Philip Hyland +3 more
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Shuitu Baochi Xuebao, 2017 为探讨草本植物根系对崩岗洪积扇土壤抗剪强度的影响，以巨菌草（Pennisetum sp.）和宽叶雀稗（Paspalum wettsteinii）为研究对象，采用WinRHIZO根系分析系统对根系特征进行定量分析，并采用原位剪切试验测定崩岗洪积扇各土层的抗剪强度。结果表明：（1）根系能够改善土壤的结构及水分状况。（2）2种草本植物根系均主要分布在0—5 cm土层，该层巨菌草根系各参数值是该草种根系均值的3.1~4.39倍，宽叶雀稗的则为2.23~2.57倍；随着土层深度的增加，巨菌草根系参数呈对数函数减小，
李 +6 more
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Shuitu Baochi Xuebao, 2017 为探讨东北雨养区玉米生长状况和田间水分对种植密度和地膜覆盖的响应，2015年在沈阳农业大学水利学院试验场设置了低（67 500株/hm2）、中(82 500株/hm2)、高(97 500株/hm2) 3个种植密度水平和覆膜/裸地2种方式的玉米田间试验，据试验结果分析了土壤水分、玉米根系及其产量变化。结果表明：（1）在0—20 cm土层中，整个生育期内，覆膜对于低密度处理的土壤田间含水率影响显著 ...
陈志君 +4 more
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Shuitu Baochi Xuebao, 2019 植物根系是植物与土壤进行物质交换的通道，在土壤侵蚀严重、生态脆弱的黄土丘陵区，深入认识根系对土壤物理化学性质的影响具有重要意义。选取了白羊草（Bothriochloa ischaemum）、苔草（Carex lanceolata）、茭蒿（Artemisia leucophylla）、铁杆蒿（Artemisia sacrorum）、狼牙刺（Sophora viciifolia）、柠条（Caragana intermedia）6种植物作为研究对象，取0-10，10-20，20-30，30-40，40-50 ...
赵富王, 王宁, 苏雪萌, 李秋嘉
doaj
Shuitu Baochi Xuebao, 2002 以皇竹草作为生物篱植物,探讨了其在陡坡地的生长状况和水土保持效益。结果表明:皇竹草茎叶鲜生物量259.2t/hm2,年产干草51.2t/hm2,根系的84.96%集中分布于0～30cm土层内,根系密度48.6条/100cm2,可有效减小土壤容重,增加土壤孔隙度,提高土壤贮水量,固持土壤,是优良的水土保持植物。
廖晓勇 陈治谏 等
doaj +2 more sources