为了解希拉穆仁天然草地土壤入渗特征,以未经人为干扰的围封草地为研究对象,利用双环法测定了以蒙古韭(Allium mongolicum)、银灰旋花(Convolvulus ammannii)、羊草(Leymus chinensis)、洽草(Koeleria asiatica)、克氏针茅(Stipa krylovii)、短花针茅(Stipa breviflora)6种植物为优势种的不同群落结构下土壤入渗过程,分析其入渗特征及影响因素。结果表明:各样地土壤入渗速率随时间变化过程大致分为3个阶段 ...
王则宇 +5 more
doaj
选择典型南方红壤区平均坡度为10°的坡耕地小区进行天然降雨观测,对横坡耕作、顺坡耕作、顺坡耕作+植物篱、稻草覆盖4种耕作措施在侵蚀过程中的径流泥沙和养分流失特征进行研究。结果表明,监测期间,径流深和泥沙流失量基本随雨强的增大而增加。随着耕作措施由顺坡耕作向顺坡耕作+植物篱、横坡耕作、稻草覆盖的转换,减流效益、减氮效益和减磷效益依次增大。稻草覆盖措施减流效益最佳,为91.77%;横坡耕作措施减沙效益最佳,为98.91%;稻草覆盖 ...
周怡雯 +6 more
doaj
以汾河上游阳坡小流域为研究区,在2015—2017年进行了天然降雨条件下的坡面产流产沙小区试验,结果表明:(1)研究区的侵蚀性降雨在年内和年际间分布很不均匀。少数几次强降雨对降雨侵蚀力的贡献很大。(2)不同侵蚀性降雨条件下,鱼鳞坑+乔木或灌木拦蓄径流或泥沙能力最强,裸地最弱;坡面产流量大小依次为:裸地 > 坡耕地 > 草地 > 油松 > 黄刺玫 > 鱼鳞坑+油松 > 鱼鳞坑+黄刺玫。坡面产沙量大小规律为:鱼鳞坑+乔或灌 < 草地 < 乔或灌 < 坡耕地 < 裸地。(3)随着雨量增加 ...
杜轶 +4 more
doaj
[Determination of 26 herbicide residues in soil, sediment, and surface water samples using modified QuEChERS method combined with ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Zhao L, Ma L, Huang LQ, Chen JB, Zhu WF.
europepmc +1 more source
[Therapeutic effects of natural products on animal models of chronic obstructive pulmonary disease]. [PDF]
Fei X +5 more
europepmc +1 more source
Grazing Behavior of Cows in Dry Season Measured by Handheld GPS and Bite Counter Collar : a Case of Fazenda Baia Bonita in South Pantanal, Brazil [PDF]
コジマ アナ +2 more
core
[Effect of different induction chemotherapy regimens on autologous hematopoietic stem cell mobilization in patients with multiple myeloma in the new drug era]. [PDF]
Wang XL +8 more
europepmc +1 more source
[Research progress on toxic shock syndrome due to group A <i>Streptococcus</i> infection in children]. [PDF]
Wang HY, Zhou W, Huang LS.
europepmc +1 more source
XuanHuGPT: parameter-efficient fine-tuning of large language model in the field of traditional Chinese medicine. [PDF]
Tong X +9 more
europepmc +1 more source
[Research progress in the application of molecular imprinting technology in catalysis]. [PDF]
Ye WM +5 more
europepmc +1 more source

