Results 11 to 20 of about 1,686,075 (164)
ABSTRACT Biodegradable zinc (Zn)‐based materials are considered promising candidates for orthopedic applications because of their favorable mechanical properties, controllable biodegradability, and good biosafety profiles. However, their clinical translation is limited by early‐stage corrosion‐induced cytotoxicity and inflammation, as well as ...
Jinlong Mao +9 more
wiley +1 more source
晋西北丘陵风沙区50年林龄人工柠条林植被群落及其土壤特性变化
为探究晋西北丘陵风沙区50年林龄人工柠条林植被群落特征及土壤环境因子的变化规律。在0(撂荒地), 12, 18, 40, 50年的时间序列上, 分析柠条生长性状、土壤含水量、土壤养分及植物群落特征等变化动态。结果表明: (1)随着人工柠条林种植年限的增加, 柠条盖度和株高在时间梯度上显著增加, 具体表现为, 种植后期(40~50年)的柠条盖度是种植前期(0~12年)的1.98倍, 柠条株高在种植后期(40~50年)是种植前期(0~12年)的1.48倍; 柠条密度随种植年限的增加而显著降低, 从种植前期 ...
刘婧 +4 more
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract Grasslands worldwide are experiencing severe degradation due to overgrazing, climate change and anthropogenic disturbances, resulting in substantial declines in biodiversity and ecosystem functioning.
Xiaoqi Wang +5 more
wiley +1 more source
Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li +11 more
wiley +1 more source
种子大小是植物的一个重要品质性状,也是影响作物产量的一个关键因素。近年来,研究人员在种子大小调控机制方面取得了很多重要的研究进展,鉴定了许多调控种子大小的基因。对调控种子大小机制的研究可为作物育种提供重要的理论依据,也可利用调控种子大小的基因实现作物的增产。本文主要以模式植物拟南芥和水稻为例,从泛素、转录因子和激素等方面入手,综述了各类因子调控种子大小的分子机理 ...
庞永珍, 江文波, 张雪晶
core +1 more source
著者在编写《中国植物志》胡颓子科时,查阅了全国各主要植物标本室所收藏的植物标本,除在《植物研究室汇刊》、《四川植物志》、《中国植物志》、《中国高等植物图鉴》等刊物和书籍上发表和记载的以外,尚有一些新种和变新种,放在此发表。 平南胡子 新种 图版1.
张泽荣
doaj
Newly recorded of spermatophyte from Tibet Autonomous Region, China(西藏种子植物新记录)
报道了西藏种子植物3个新记录属:爵床科(Acanthaceae)的十万错属(Asystasia Bl.)、千屈菜科(Lythraceae)的萼距花属(Cuphea Adans. ex P. Br.)、毛茛科(Ranunculaceae)的星果草属(Asteropyrum Drumm. et Hutch.)和相对应的 3 个新记录种:白接骨(Asystasia neesiana (Wall.) Nees)、香膏萼距花(Cuphea alsamona Cham.
ZHANGLi(张丽), LUOJian(罗建)
doaj +1 more source
Abstract Elliptic Fourier analysis (EFA) is often employed in geometric morphometrics (GM), but the normalization of elliptic Fourier descriptor (EFD) has persistently posed challenges for obtaining unique and comparable results, especially in the application of outline‐based GM methods, which limits the implementation in automated analysis of numerous,
Hui Wu +6 more
wiley +1 more source
在野外调查和分类的基础上,对大木山自然保护区种子植物区系进行了初步研究.结果表明:大木山自然保护区植物资源十分丰富,共有种子植物137科,648属,1400种.科的优势现象明显,优势科为蔷薇科、菊科、禾本科、豆科和百合科.地理成分复杂,种子植物科的分布区类型有10个,热带成分占优势,属的分布区类型有15个,种的分布区类型有14个,温带性质属种略多于热带性质属种,区系具有明显的过渡性特征.种子植物区系起源古老,特有成分和珍稀保护物种丰富.
周先容 +4 more
doaj
This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang +11 more
wiley +1 more source

