Results 11 to 20 of about 1,183 (154)
Methods in Ecology and Evolution, Volume 14, Issue 7, Page 1732-1746, July 2023., 2023 Abstract Our knowledge on the responses of permafrost ecosystems to climate warming is critical for assessing the direction and magnitude of permafrost carbon‐climate feedback. However, most of the previous experiments have only been able to warm the air and surface soil, with limited effects on the permafrost temperature.
Yuxuan Bai +8 more
wiley +1 more source
Factors that shape large‐scale gradients in clonality
Journal of Biogeography, Volume 50, Issue 5, Page 827-837, May 2023., 2023 Abstract Aim Many plant species reproduce clonally. However, ecologists still have much to learn about the factors that shape large‐scale patterns in plant clonal growth and reproduction, especially in the southern hemisphere. We addressed this knowledge gap by quantifying relationships between reproductive mode and a suite of plant characteristics and
Hongxiang Zhang +4 more
wiley +1 more source
A novel red‐edge spectral index for retrieving the leaf chlorophyll content
Methods in Ecology and Evolution, Volume 13, Issue 12, Page 2771-2787, December 2022., 2022 Abstract The leaf chlorophyll content (Chlleaf) is a crucial vegetation parameter in carbon cycle modelling and agricultural monitoring at local, regional and global scales. The red‐edge spectral region is sensitive to variations in Chlleaf. An increasing number of sensors are capable of sampling red‐edge bands, providing opportunities to estimate ...
Hu Zhang +15 more
wiley +1 more source
Shuitu Baochi Xuebao, 2021 为揭示冻融循环作用对棕壤抗剪强度的影响，采集沈阳地区5 cm和25 cm 2个深度原状棕壤（分别为H5和H25）为研究对象，通过室内冻融循环模拟和土壤直剪试验，研究冻融循环次数和土壤含水率对土壤抗剪强度的影响。结果表明：（1）土样含水率越高，初次冻融作用的破坏效果越强，1次冻融循环后，含水率为25%的H5和H25土样黏聚力分别下降50.00%和25.87%；含水率35%的H5和H25土样黏聚力分别下降75.61%和50.77%。15次冻融循环后，含水率10%的H5和H25土样黏聚力分别增加74.36 ...
朱龙祥 +5 more
doaj
Characteristics of a Typical Tamarix Hohenackeri Shrub Resource Island in Qaidam Basin Under Prevailing Wind [PDF]
, 2022 [Objective] The characteristics of a typical Tamarix hohenackeri shrub resource island in Nuomuhong area of Qaidan Basin under the action of prevailing winds were studied in order to deeply understand the ecological significance of tamarisk shrubs in ...
Cao Guangchao +7 more
core +1 more source
Water-holding Capacity of Reclaimed Grassland with Different Ages in Karst Regions [PDF]
, 2023 [Objective] The water-holding capacity of reclaimed grassland of different ages was studied in order to provide a scientific basis for water retention and soil and water conservation of reclaimed grassland in karst regions.
Li Xuemei +3 more
core +1 more source
Shuitu Baochi Xuebao, 2023 为了探究三峡水库消落带根土复合体抗剪性能的影响机制,以狗牙根根土复合体为研究对象,利用三轴试验,定量分析含水率、干湿交替次数以及含根量对根土复合体抗剪性能的影响。结果表明:(1)随着干湿交替次数和含水率的增加,土壤抗剪性能逐渐劣化,含水率13%的根土复合体抗剪强度依次比含水率18%、含水率23%的土壤抗剪强度提高0.12%~14.76%,12.47%~21.14%;经历干湿交替6次与3次的根土复合体抗剪强度比经历1次的降低6.31%~14.71%与2.41%~8.19%。(2 ...
郑晓岚 +4 more
doaj
Study on the natural attenuation mechanism of gibberellic acid in soil under different water content conditions [PDF]
As a micro-toxic pesticide with a wide application range and large dosage, the high solubility of gibberellic acid (GA3) causes its weak adsorption and strong migration in soil, accompanied by strong natural attenuation, and it is also affected by ...
Jingfang LI, Liang CHEN, Xiaolei HU
core +1 more source
Landslide susceptibility evaluation considering the importance selection of influencing factors and soil moisture content [PDF]
The current landslide susceptibility assessment system lacks unified and scientifically grounded standards for selecting factors that influence landslide development, leading to inconsistencies in evaluation results.
Liwei YUAN +3 more
core +1 more source
Numerical simulation of leakage and diffusion of buried pure hydrogen/hydrogen-doped natural gas pipeline [PDF]
, 2023 In order to study the diffusion characteristics of pure hydrogen/hydrogen-doped natural gas in the soil environment, a three-dimensional leakage model of the buried pure hydrogen/hydrogen-doped natural gas pipeline was established by Fluent software.
Baojin QI +3 more
core +1 more source