Results 41 to 50 of about 2,227,886 (329)

Diversity and Variation of Asymbiotic Nitrogen-Fixing Microorganisms in Alpine Grasslands on the Tibetan Plateau

Frontiers in Ecology and Evolution, 2021
Asymbiotic nitrogen-fixing (ANF) bacteria contribute a substantial amount of nitrogen in ecosystems, especially in those with low symbiotic nitrogen fixation (SNF) capability.
Wenyan Li, Fei Li, Haijun Zeng, Lin Ma, Lingyan Qi, Xiaochun Wang, Wenyin Wang, Zhen Peng, A. Allan Degen, Yanfu Bai, Tao Zhang, Mei Huang, Jin Han, Zhanhuan Shang, Zhanhuan Shang, Zhanhuan Shang   +15 more
doaj   +1 more source

Vegetation NDVI Linked to Temperature and Precipitation in the Upper Catchments of Yellow River [PDF]

, 2012
Vegetation in the upper catchment of Yellow River is critical for the ecological stability of the whole watershed. The dominant vegetation cover types in this region are grassland and forest, which can strongly influence the eco-environmental status of ...
Hao, F., Ouyang, W., Skidmore, A.K., Toxopeus, A.G., Zhang, X.   +4 more
core   +4 more sources

Grassland degradation with saline-alkaline reduces more soil inorganic carbon than soil organic carbon storage

Ecological Indicators, 2021
Grassland is an important part of terrestrial ecosystems and contain substantial amounts of soil carbon. However, 90% of grasslands suffer from degradation in northern China, where soil inorganic carbon (SIC) is a major reservoir.
Tongtong Xu, Minna Zhang, S. Ding, Bai Liu, Qing Chang, Xuan Zhao, Ying Wang, Jianyong Wang, Ling Wang   +8 more
semanticscholar   +1 more source

Using Landsat OLI and Random Forest to Assess Grassland Degradation with Aboveground Net Primary Production and Electrical Conductivity Data

ISPRS International Journal of Geo-Information, 2019
Grassland coverage, aboveground net primary production (ANPP), and species composition are used as indicators of grassland degradation. However, soil salinization deficiency, which is also a factor of grassland degradation, is rarely used in grassland ...
Hao Yu, Lei Wang, Zongming Wang, Chunying Ren, Bai Zhang   +4 more
doaj   +1 more source

Spatio-temporal variation in grassland degradation and its main drivers, based on biomass: Case study in the Altay Prefecture, China

Global Ecology and Conservation, 2019
Analyzing the spatio-temporal characteristics and identifying of main factors that drive grassland degradation are essential for formulating ecological restoration measures for grassland. In this study, we addressed two main scientific questions: (1) how
Guangpeng Zhang, Junjie Yan, Xiaotong Zhu, Hongbo Ling, Hailiang Xu   +4 more
doaj   +1 more source

Monitoring grassland degradation and restoration using a novel climate use efficiency (NCUE) index in the Tibetan Plateau, China

Ecological Indicators, 2021
Grassland degradation is one of the most pressing challenges in natural environment and anthropogenic society. However, there is yet no effective approach for monitoring the spatio-temporal pattern of large-scale grassland degradation. In particular, the
Ru An, Ce Zhang, Mengqiu Sun, Huilin Wang, Xiaoji Shen, Benlin Wang, Fei Xing, Xianglin Huang, Mengyao Fan   +8 more
doaj   +1 more source

Response of Soil Microbial Community Composition and Diversity at Different Gradients of Grassland Degradation in Central Mongolia

Agriculture, 2022
Vegetation and soil microorganisms are important components of terrestrial ecosystems and play a crucial role in ecosystem functioning. However, little is known about the synergistic changes in soil microbial community with aboveground plants in ...
Lumeng Chao, Xiaodan Ma, Munkhzul Tsetsegmaa, Yaxin Zheng, Hanting Qu, Yuan Dai, Jingpeng Li, Yuying Bao   +7 more
semanticscholar   +1 more source

Soil organic matter and water content affect the community characteristics of arbuscular mycorrhizal fungi in Helan mountain, an arid desert grassland area in China

Frontiers in Microbiology
IntroductionArbuscular mycorrhizal fungi (AMF) are vital in terrestrial ecosystems. However, the community structure characteristics and influencing factors of AMF in the forest ecosystems of arid desert grassland areas require further investigation ...
Leilei Shao, Leilei Shao, Peixuan Yan, Siqi Ye, Siqi Ye, Hao Bai, Hao Bai, Rui Zhang, Rui Zhang, Guangyao Shi, Guangyao Shi, Yang Hu, Yang Hu, Danbo Pang, Danbo Pang, Xiang Niu, Xilu Ni, Xilu Ni   +17 more
doaj   +1 more source

Identification of Ratholes in Desert Steppe Based on UAV Hyperspectral Remote Sensing

Applied Sciences, 2023
This paper established a mathematical method for the spectral feature extraction of ratholes, based on UAV hyperspectral imaging technology. The degradation of grasslands is a major challenge to terrestrial ecosystems.
Xinchao Gao, Yuge Bi, Jianmin Du
doaj   +1 more source

Integrated Assessments of Land Degradation in the Three-Rivers Headwater Region of China from 2000 to 2020

Remote Sensing, 2023
Since the 1970s, certain areas within the Three-Rivers Headwater Region (TRHR) of China have faced severe land degradation due to the combined effects of climate change and human activities, leading to restricted ecological service functions and ...
Yao Pan, Yunhe Yin, Wei Cao
doaj   +1 more source