Results 81 to 90 of about 12,025 (172)

Hobbyist preferences for pet freshwater turtles

open access: yesConservation Biology, EarlyView.
Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao   +7 more
wiley   +1 more source

Importance and spatial patterns of invisible fisheries in Amazonian clear‐water rivers as revealed by fisher knowledge and collaboration

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
The graphical abstract highlights the research collaboration with fishers through interviews to record fishers' knowledge and participatory monitoring, to provide data on small‐scale fisheries in three clear water rivers (Trombetas, Tapajos and Tocantins).
Renato A. M. Silvano   +10 more
wiley   +1 more source

矿粮复合区煤累积对土壤团粒结构的影响

open access: yesShuitu Baochi Xuebao, 2019
为理解煤对土壤结构的影响,以土壤煤累积现象普遍的焦作矿粮复合区为研究区,选取3种不同程度的煤累积土壤(低累积、中累积和高累积)为研究对象,不含煤的土壤为对照,通过测定0-40 cm土层深度范围的水稳性团聚体组成,并采用分形维数(D)、平均重量直径(MWD)、几何平均直径(GMD)和大团聚体破坏率(PAD)作为团粒结构的评价指标,探讨煤累积对土壤团聚体组成与稳定性的影响。结果表明:煤在土壤中累积可以促进水稳性微团聚体向大团聚体转化,降低团聚体的分形维数,提高团聚体稳定性。深层(20-40 cm ...
聂小军   +5 more
doaj  

麦茬复种饲料油菜对耕层土壤团聚体的影响

open access: yesShuitu Baochi Xuebao, 2006
通过田间小区试验,研究了不同油菜种植密度与施氮肥对麦茬复种饲料油菜耕层(0~20cm)土壤颗粒组成、水稳性团聚体、微团聚体、粘粒分散率和团聚度的影响。试验结果表明,麦茬复种油菜能提高耕层土壤水稳性团聚体,改善土壤颗粒组成状况;与对照(CK)相比,耕层土壤粘粒分散率呈显著或极显著性降低,〈0.001mm的土壤团聚体破坏率和特征微团聚体比例(〈0.01mm/〉0.01mm)显著降低,而土壤团聚度在油菜苗期为降低趋势,收获期呈显著或极显著性增加,〉0 ...
杨瑞吉   +3 more
doaj   +2 more sources

Effect of a Spray Containing Occlusive Agents, Humectants and Physiological Lipids on Skin Hydration of Healthy Dogs When Applied After Bathing With a Chlorhexidine 2%/Miconazole 2% Shampoo

open access: yesVeterinary Dermatology, Volume 37, Issue 1, Page 140-147, February 2026.
Background: Normal hydration of the canine epidermis is imperative for cutaneous homeostasis. Xerosis may be encountered in canine atopic dermatitis and may be aggravated by topical antiseptics. Hypothesis and Objectives: To evaluate the hydrating properties and the safety of a spray (Sensiderm spray; MP Labo) when applied after shampooing healthy dogs
Adamantia Pseftogka   +3 more
wiley   +1 more source

土壤团聚体和水分动态在3种植被覆盖下的关系

open access: yesShuitu Baochi Xuebao, 2019
为了探究不同植被覆盖下的土壤水分动态变化和团聚体稳定性的关系,选取桂花地、油菜地、杉树地3种植被下的土壤为研究对象,就团聚体和土壤水分之间的年变化关系、短期变化关系(在短期降雨前后)进行了研究。结果表明:在1年时间内、3种植被下的土壤中,杉树地土壤团聚体稳定性显著高于桂花地和油菜地,并以0.25~2 mm的水稳团聚体为主。土壤团聚体稳定性的年变化趋势和土壤水分呈显著负相关关系,在土壤水分含量降低的时候团聚体稳定性升高。在桂花地、油菜地中,土壤水分和0.25 mm粒级团聚体呈负相关趋势 ...
徐程   +4 more
doaj  

Mechanism and application of high pressure grouting in karst collapse column with vein-like water channel [PDF]

open access: yes
Karst collapse column is widely developed in north China coal field, which is a serious defect of coal measure strata and has caused many serious water inrush disasters. It is of practical significance to study the characteristics of water conduction and
Bingzhu WANG   +4 more
core   +1 more source

Current situation and scientific challenge of soil and water erosion in Gully Consolidation and Highland Protection Project of DongZhi Loess Plateau [PDF]

open access: yes
Due to the influence of extreme rainfall and high intensity human engineering activities, the advance speed of the gully head in the Loess Tableland is intensified, which seriously threatens the economic and social development of the Loess Tableland.
Buping ZHANG   +5 more
core   +1 more source

紫色土区植物篱篱前淤积带土壤团聚体稳定性特征研究

open access: yesShuitu Baochi Xuebao, 2018
为探讨紫色土区植物篱篱前淤积带土壤团聚体的稳定性,试验以该淤积带土壤为研究对象,设置了10°对照小区(T1)、10°新银合欢植物篱小区(T2)、10°香根草植物篱小区(T3)、15°对照小区(T4)、15°香根草植物篱小区(T5)等5个处理,采用萨维诺夫法测定了风干团聚体和水稳性团聚体的组成状况,以保存机率、稳定性指数、PAD(结构体破坏率)、MWD(平均重量直径)、GMD(几何平均直径)、MWSSA(平均重量比表面积)、CS(偏度系数)和CE(峰凸系数)等为评价指标,分析了不同坡度 ...
王润泽   +8 more
doaj  

Exploration on the Stratification of the Ground Substrate Survey and the Design and Construction of Its Testing Indicator System [PDF]

open access: yes
The ground substrate layer is the main carrier of the material and energy cycle of the earth’s surface. At present, it is essential to have a suitable ground substrate stratification and testing index system for conducting an effective ground substrate ...
Aibing HAO   +13 more
core   +1 more source

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