PubAg

Main content area

Search

6  Search Results

1 - 6 of 6
Number of results to display per page

Search Results

1. The influence of climate, topography, parent material and vegetation on soil nitrogen fractions

Author:
Zhong, Qinmei; Zhang, Shirong; Chen, Honglin; Li, Ting; Zhang, Chuer; Xu, Xiaoxun; Mao, Zhu; Gong, Guoshu; Deng, Ouping; Deng, Liangji; Zhang, Yanzong; Pu, Yulin; Wang, Lilin
Source:
Catena 2019 v.175 pp. 329-338
ISSN:
0341-8162
Subject:
topography,   etc   ; biotic factors; climate; nitrogen; plant communities; prediction; soil; species diversity; temperature; vegetation; China;     Show all 11 Subjects
Abstract:
... Soil nitrogen (N) is controlled by climate, topography, parent material and vegetation in less-disturbed ecosystems. However, a comprehensive understanding of the interactions among these soil-forming factors on soil N fractions (SNFs) is still unclear. We measured SNFs at 89 sites across a 3300-m gradient elevation in the southeastern Tibetan Plateau, which spans a large range of climates, parent ...
DOI:
10.1016/j.catena.2018.12.027

2. Effects of topographic factors on runoff and soil loss in Southwest China

Author:
Zhang, Xingqi; Hu, Maochuan; Guo, Xinya; Yang, Hong; Zhang, Zhenke; Zhang, Keli
Source:
Catena 2018 v.160 pp. 394-402
ISSN:
0341-8162
Subject:
topography,   etc   ; karsts; rain; rain intensity; runoff; soil; soil conservation; soil erosion; China;     Show all 9 Subjects
Abstract:
... Soil erosion is a threat to sustainable agricultural and regional development in karst regions. In this study, field plot observation method was used to estimate the effects of slope gradient and length on runoff and soil loss in Guizhou, Southwest China. The results showed that runoff and soil loss is nonlinearly related to slope gradient. The increasing trends of runoff and soil loss declined af ...
DOI:
10.1016/j.catena.2017.10.013

3. Slope aspect affects the non-structural carbohydrates and C:N:P stoichiometry of Artemisia sacrorum on the Loess Plateau in China

Author:
Ai, Zemin; He, Lirong; Xin, Qi; Yang, Ting; Liu, Guobin; Xue, Sha
Source:
Catena 2017 v.152 pp. 9-17
ISSN:
0341-8162
Subject:
topography,   etc   ; Artemisia gmelinii; aboveground biomass; carbon nitrogen ratio; environmental factors; rhizosphere; soil; stoichiometry; sugars; tissues; China;     Show all 11 Subjects
Abstract:
... Slope aspect, as an important topographic factor on the Loess Plateau in China, may influence the productivity and relative characteristics of Artemisia sacrorum in this area. Three slope aspects (sunny, half-sunny, and shady slopes) were chosen to study the effects of slope aspect on the biomass, carbon:nitrogen:phosphorus (C:N:P) stoichiometry, and non-structural carbohydrate (NSC) concentration ...
DOI:
10.1016/j.catena.2016.12.024

4. Catchment-scale surface water-groundwater connectivity on China's Loess Plateau

Author:
Li, Zhi; Lin, Xueqing; Coles, Anna E.; Chen, Xi
Source:
Catena 2017 v.152 pp. 268-276
ISSN:
0341-8162
Subject:
topography,   etc   ; electrical conductivity; groundwater; hydrologic cycle; isotopes; loess; oxygen; runoff; soil; stream flow; surface water; water management; watersheds; weathering; wet season; China;     Show all 16 Subjects
Abstract:
... Thick loess deposits (up to 200m deep) and a large unsaturated zone (up to 100m below the soil surface) complicate the interactions between surface water and groundwater in China's Loess Plateau, especially in catchments characterized by tableland-gully topography in this region. In the Heihe watershed, electrical conductivity (EC), chloride (Cl) concentrations, and stable water isotope data (δD a ...
DOI:
10.1016/j.catena.2017.01.026

5. Assessment of soil erosion sensitivity and analysis of sensitivity factors in the Tongbai–Dabie mountainous area of China

Author:
Zhang, Ronghua; Liu, Xia; Heathman, Gary C.; Yao, Xiaoyou; Hu, Xuli; Zhang, Guangcan
Source:
Catena 2013 v.101 pp. 92-98
ISSN:
0341-8162
Subject:
topography,   etc   ; anthropogenic activities; ecosystem engineering; geographic information systems; remote sensing; soil; vegetation; water erosion; water quality; China;     Show all 10 Subjects
Abstract:
... Soil erosion reduces crop productivity and creates negative impacts on water quality. Soil erosion by water has become a problem worldwide and as concerns about the environment continue to grow, soil erosion remains a very active area of scientific research. In this study, based on advanced remote sensing and Geographic Information Systems (GIS) technologies, the influences of precipitation, soil, ...
DOI:
10.1016/j.catena.2012.10.008

6. Prediction of soil organic matter variability associated with different land use types in mountainous landscape in southwestern Yunnan province, China

Author:
Liu, Shiliang; An, Nannan; Yang, Juejie; Dong, Shikui; Wang, Cong; Yin, Yijie
Source:
Catena 2015 v.133 pp. 137-144
ISSN:
0341-8162
Subject:
topography,   etc   ; agricultural land; carbon cycle; carbon dioxide; forests; grasslands; land use planning; landscapes; normalized difference vegetation index; prediction; shrublands; soil; soil fertility; soil organic matter; soil surveys; China; United Kingdom;     Show all 17 Subjects
Abstract:
... SOM is a crucial factor that indicates soil fertility and vegetation status and, to a considerable extent, influences the CO2 concentration in the atmosphere and even the global carbon cycle. We collected 294 SOM data from the secondary soil survey of Yunnan province in 1979 and investigated 210 soil sample sites (0–20cm depth) in 2011 to enhance the understanding of the spatial variability of SOM ...
DOI:
10.1016/j.catena.2015.05.010