Results 31 to 40 of about 9,678 (164)
The Next Jane program from Roots & Shoots was found effective for the conservation leadership improvement even though the participants attended it with different motivations. The development of conservation leadership traits was facilitated by skills development, a supportive environment, and reflective action.
Zhang Zekun, Chen Jin, Gu Siqi, He He
wiley +1 more source
Rhizoremediation of Phenanthrene-Contaminated Sediment with Kandelia Obovata and Its Microbial and Zymologic Mechanisms [PDF]
植物在修复多环芳烃(PolycyclicAromaticHydrocarbons,PAHs)等有机物污染的土壤中有较大的应用潜力。植物修复污染土壤的纵深研究产生了根际修复新技术。根际环境与根际微生物是植物降解、转化有毒有害有机污染物的基础。本论文在评价红树植物秋茄(Kandeliaobovata)修复菲(Phenanthrene,PHE)污染沉积物的潜能基础上,探讨了根际和非根际沉积物微生物和酶活性对不同浓度(5、10、20、40mg•kg-1)菲的响应 ...
方宇
core
The Impact of Conflict in the Democratic Republic of Congo on the African Union's Agenda 2063
ABSTRACT The Democratic Republic of Congo (DRC) remains a crucible of persistent conflict, particularly in its volatile eastern provinces. This article contends that the entrenched violence, exemplified by the recent resurgence of the M23 rebellion, constitutes a profound betrayal of the African Union's (AU) Agenda 2063 and its cornerstone initiative, “
Majani Edward
wiley +1 more source
ABSTRACT Objectives To compare the maternal hemodynamics of Chinese women at low and at high risk for preterm pre‐eclampsia (PE) and assess the differences in hemodynamic parameters between high‐risk women with or without prophylactic aspirin. Methods This was a prospective longitudinal case–control study of 857 Chinese women with a singleton pregnancy
X. Wang +11 more
wiley +1 more source
测定了贵州喀斯特峡谷水保经济植物花椒根际和非根际土壤的理化性质;探讨了适宜花椒生长的土壤特性;提出了发展花椒生产的主要技术措施。
何腾兵 刘元生
doaj +2 more sources
采用盆栽试验研究了酸性黄壤铅污染下4种草本植物根际土壤微生物数量和酶活性的变化。结果表明:植物根际土壤中细菌、真菌和放线菌对铅污染的响应因植物根系环境的不同而有所区别:4种植物根际土壤中细菌和真菌数量增加,但增幅不一致。黑麦草和早熟禾根际土壤放线菌数量降低,翦股颖根际土壤放线菌数量呈现波动起伏。4种植物根际土壤中过氧化氢酶活性、淀粉酶活性和中性磷酸酶活性与土壤铅含量都表现出负相关性,与淀粉酶活性负相关达到极显著,铅对黑麦草和狗牙根根际土壤脲酶活性表现出低浓度下激活高浓度下抑制 ...
石汝杰, 陆引罡
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou +5 more
wiley +1 more source
通过野外调查和盆栽试验研究了超积累植物东南景天根际土壤酶活性变化及其与重金属有效态的关系。研究结果表明,在矿山土壤、重度污染土壤和轻度污染土壤上,种植超积累生态型东南景天后,根际土壤有效态Zn分别比非根际减少了14.3%,7.9%和47.4%,有效态Cd分别比非根际减少25.1%,21.9%和20%。在铅锌矿区,东南景天生长地段土壤蔗糖酶、酸性磷酸酶、脱氢酶活性高于其它植物生长地段。在矿山土壤和重度污染土壤中,超积累生态型东南景天根际土壤酶活性明显高于非根际土壤,同时也高于非超积累生态型根际土壤。Pb ...
李廷强, 朱恩, 杨肖娥, 张玲
doaj
Research of Rhizospheric Nitrogen Cycle of Kandelia obovata (S., L.) Yong [PDF]
随着城市及流域工农业生产的发展,农药大量使用,矿产、化工、冶金等工业排放的“三废”剧增,沿海污水排放量日益增加,河口生态系统污染日趋严重。红树林湿地系统具有潜在的净化污水的能力及过滤陆地径流和内陆带出的有机污染物和营养盐的生态功能,对来自陆地的污染物有缓冲作用。进入红树林湿地的营养盐最先在根际中完成转化,而红树林对营养盐的去除机制在于其对营养盐的截留能力,但是这种去除机制目前尚不明朗。本研究立足于秋茄根际氮输入下的根际动态过程,以根际非根际的理化性状为切入点 ...
翁铂森
core
铜和镉复合污染对红树林区微生物群落结构和沉积物酶活性的影响 [PDF]
采用野外样地研究与室内根箱栽培相结合的方法,对漳江口红树林保护区铜、镉污染生境沉积物微生物结构与土壤酶活性进行研究,旨在探讨其对重金属的响应.微生物磷脂脂肪酸数据表明漳江口红树林湿地3种红树植物秋茄(Kandelia obovata)、白骨壤(Avicennia marina)、桐花树(Aegiceras corniculatum)根际土壤微生物群落的多样性与林外光滩区域比较差异有统计学意义 ...
严重玲 +6 more
core +1 more source

