Results 11 to 20 of about 7,231 (160)
Shuitu Baochi Xuebao, 2005 通过连续5年的实地调查与观测,研究了10种流动沙地植物沙障治理模式的适用范围、植被恢复效果、沙丘移动距离及投入与产值情况。结果表明:研究地区的降水量水平能够保证踏郎等植物种条的成活,可利用植物沙障治理流沙。除平铺草方格沙障内植小叶锦鸡儿模式和播种草方格内播踏郎、小叶锦鸡儿模式不适应沙丘上部外,10种流动沙地治理模式均属适用模式,但各模式在植被恢复速度、投入、产值和控制沙丘移动速度等方面具有一定差别。相对而言,效果最好的是踏郎植物活沙障模式和小黄柳、踏郎植物活沙障模式 ...
王树力 刘玉山
doaj +2 more sources
Monitoring and Evaluating Carbon Sink Capacity for Comprehensive Management of Soil and Water Conservation in Small Watersheds [PDF]
, 2023 [Objective] The carbon sinks of soil and vegetation were monitored and evaluated in order to provide technology and methodology for implementing dynamic monitoring and evaluation of carbon sinks for soil and water conservation projects, and to provide ...
Cheng Hui +6 more
core +1 more source
Analysis of Nutritional Quality of Tonggu Polygonatum cyrtonema Hua from Different Planting Ways and Growing Years and Construction of Its Evaluation System [PDF]
To comprehensively explore the nutritional quality and construct evaluation system, this paper studied the effects of different planting ways and growing years on the 23 nutritional qualities of Tonggu Polygonatum cyrtonema Hua, and constructs of its ...
Donggen WANG +9 more
core +1 more source
Shuitu Baochi Xuebao, 2020 为探究不同栽培方式对冬小麦生长发育、产量形成及水分利用的影响。通过田间试验，设置传统畦田种植（TC）、垄作种植（RC）和高低畦田种植（HLC）3种栽培方式，其中RC和HLC种植模式分别设置3种灌溉处理（900，720，540 m3/hm2），以TC的常规灌溉（900 m3/hm2）作为对照，研究3种栽培方式下冬小麦生育期内的土壤水分变化与耗水规律，分析栽培方式对产量构成要素和水分利用效率的影响。结果表明：不同栽培方式下冬小麦各生育期的土壤含水量变化具有显著差异，RC处理的集雨储水能力相对较强 ...
刘俊明 +4 more
doaj
, 2009 通过2004年2～12月对古尔班通古特沙漠南缘2年生人工梭梭和沙拐枣混交林内3条典型坡面土壤水分进行了系统监测与研究。结果表明:人工林土壤水分状况受季节性降水、人工林种植密度、地形因子的影响而出现明显的时空分异。在空间上将土壤水分变化划分为三层,0～30cm为活跃层,30～60 cm为次活跃层,60～120 cm为相对稳定层。通过主成分分析,得出地形因子、种植密度对0～30 cm土层土壤水分的影响次序为坡度>坡向>种植密度>高程,30～60 cm土层为坡向>种植密度>坡度>高程,60～120 ...
付恒飞, 宋春武, 蒋进, 陈钧杰
core
Characteristics of Erosive Rainfall and Its Effects on Runoff and Sediment Yield in a Low Mountain and Hilly Area of Lianyungang City [PDF]
, 2022 [Objective] The effects of different rainfall characteristics and different underlying surface conditions on soil erosion and sediment yield were determined in a low mountain and hilly area of Lianyungang City, Jiangsu Province, in order to provide a ...
Cheng Jianmin +3 more
core +1 more source
Tracing change in the public perception of plants: insights from archives and social media in China
PLANTS, PEOPLE, PLANET, EarlyView.As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu +4 more
wiley +1 more source
Application of pattern recognition technology in classification of Radix et Rhizoma Glycyrrhizae of different sources [PDF]
, 2006 目的:建立不同来源甘草药材的模式识别分类方法。方法:通过 HPLC 快速获得19个不同来源甘草药材样品的色谱指纹图谱,色谱条件固定相为 Kromasil KR100-5 C_(18)(150mm×4.6mm),流动相为乙腈-0.05%三氟乙酸溶液,梯度洗脱为乙腈20%(0min)→40%(5min)→50%(10min),流速为0.8mL·min~(-1),检测波长为254nm,从每个色谱指纹罔中提取出325个特征变量,采用聚类分析对甘草药材样品进行相似性评价,并应用 PLS 方法建立起不同植物种 ...
卓林, 朱尔一, 王小如, 王巧娥
core
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo +8 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva +9 more
wiley +1 more source