Results 141 to 150 of about 105,118 (203)

Rocky desertification succession alters soil microbial communities and survival strategies in the karst context.

Science of the Total Environment
Rocky desertification is one of the most ecological problems in the karst context. Although extensive research has been conducted to explore how to restore and protect, the responses of soil fungi and archaea to rocky desertification succession remain ...
Wei Zheng, Qiang Wu, Xiaobin Guo, Ping Zhou, Jinshui Wu, Wende Yan   +5 more
semanticscholar   +3 more sources

Karst rocky desertification in southwestern China: geomorphology, landuse, impact and rehabilitation

Land Degradation & Development, 2004
AbstractKarst rocky desertification is a process of land degradation involving serious soil erosion, extensive exposure of basement rocks, drastic decrease in soil productivity, and the appearance of a desert‐like landscape. It is caused by irrational, intensive land use on a fragile karst geo‐ecological environment.
S.‐J. Wang, Q.‐M. Liu, D.‐F. Zhang
openaire   +3 more sources

Large scale rocky desertification reversal in South China karst

Progress in Physical Geography: Earth and Environment, 2022
The karst area in southwest China is, in recent decades, one of the world’s regions with the fastest vegetation growth and increase in aboveground biomass. The improvement in the ecological conditions within this region can, to a large extent, be attributed to ecological protection projects. However, it remains unclear whether the observed increase in
Yuemin Yue, Xiangkun Qi, Kelin Wang, Chujie Liao, Xiaowei Tong, Martin Brandt, Bo Liu   +6 more
openaire   +2 more sources

Rocky desertification exponential model in Karst area

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
It was noticed long time ago that Karst rocky desertification is gradually developed into the third-largest ecological problem. Remote sensing is mostly used in the research of Karst desertification. However, the previous research used original imagery, so it cannot effectively interpret the characteristic of rocky desertification.
Guoqing Zhou, Yanli Ma
openaire   +1 more source

Mapping karst rocky desertification using Landsat 8 images

Remote Sensing Letters, 2015
Karst rocky desertification (KRD) is a serious ecological problem in southwest China. Various remote sensing techniques are available for investigating KRD. Landsat 8 Operational Land Imager (OLI) data, acquired in September (summer) 2013 and January (winter) 2014, were used to analyse the role of vegetation fraction, bedrock exposure, and slope on KRD
Shuang Li, Honggan Wu
openaire   +1 more source

Establishment of rocky desertification index in Southwest of China

2014 IEEE Geoscience and Remote Sensing Symposium, 2014
Rocky desertification is a type of land desertification. It comes from the fragile ecological and geological environment, where the human activity is very strong and the land productivity is degraded severely. As a natural disaster, rocky desertification is very destructive, and it is very difficult to be recovered.
null Lanying Yuan, null Zhenlu Yu, null Zezhong Zheng, null Guoqing Zhou, null Yalan Liu, null Qing Xia, null Minfeng Xing, null Hongsheng Zhang   +7 more
openaire   +1 more source

Fuzzy Bayesian network classifier for extraction of rocky desertification

SPIE Proceedings, 2009
Aiming at the complexity and uncertainty in the interpretation of rocky desertification from multi-source data, this paper promotes fuzzy Bayesian network embedded Gaussian mixture model(GMM) for extracting rocky desertification information.This model make a fuzzy quantization for continuous variable through GMM, use the convex function of multiple ...
Shui-ming Li, Ning Shu, Jian-bin Tao, Yin-qiao Zhang   +3 more
openaire   +1 more source

Spectral indices for estimating ecological indicators of karst rocky desertification

International Journal of Remote Sensing, 2010
Karst rocky desertification is a process of land desertification associated with human disturbance of the fragile eco-geological setting of karst ecosystems. The fractional cover of photosynthetic vegetation (PV), non-photosynthetic vegetation (NPV), bare soil and exposed bedrock are key ecological indicators of the extent and degree of land ...
Yuemin Yue, Bing Zhang, Kelin Wang, Bo Liu, Ru Li, Quanjun Jiao, Qingqing Yang, Mingyang Zhang   +7 more
openaire   +1 more source

Vegetation restoration enhancing soil carbon sequestration in karst rocky desertification ecosystems: A meta-analysis.

Journal of Environmental Management
Vegetation restoration measures have been increasingly employed to alleviate rocky desertification in karst ecosystems. However, the comprehensive effects of these interventions on soil properties and soil organic carbon (SOC) remain poorly understood ...
Wei Zheng, Xiaobin Guo, Ping Zhou, Li Tang, Jiaxin Lai, Yuting Dai, Wende Yan, Jinshui Wu   +7 more
semanticscholar   +1 more source

Pattern simulation of karst rocky desertification based on cellular automata

Acta Ecologica Sinica, 2012
Desertification in the karst mountain regions of southwest China is one of the most challenging environmental issues in western China because of its severe negative effects on the local community.Based on natural and cultural factors that cause rocky desertification occurrence and development,a simple,effective simulation and prediction model for karst
王晓学 WANG Xiaoxue, 李叙勇 LI Xuyong, 吴秀芹 WU Xiuqin   +2 more
openaire   +1 more source