نتایج جستجو برای: vegetation degradation

تعداد نتایج: 196873  

ژورنال: آبخیزداری ایران 2019
, , soufi, majid, yasrebi, banafshe,

Gully erosion is one of the important forms of soil degradation especially in semi-arid areas. Gullies are occupying 13 percent of Ilam Province area. This research focused on studying the, topographic threshold of gullies, dominant process of gully initiation and development as well, in agricultural and rangeland land uses. Ilam province with 2 million hac area is located in western Iran. Ilam...

2012
Joel B. Sankey Sujith Ravi Cynthia S. A. Wallace Robert H. Webb Travis E. Huxman

[1] Woody plant encroachment, a worldwide phenomenon, is a major driver of land degradation in desert grasslands. Woody plant encroachment by shrub functional types ultimately leads to the formation of a patchy landscape with fertile shrub patches interspaced with nutrient-depleted bare soil patches. This is considered to be an irreversible process of land and soil degradation. Recent studies h...

2006
Haimanti Bhattacharya Robert Innes

This paper presents an empirical analysis of the relationship between rural poverty and environmental change using district-level data from South, Central and West India. Unlike prior works, this study puts the hypothesis of bi-directional link between poverty and environment to systematic econometric test by accounting for the joint endogeneity of poverty and environmental change. Environmenta...

Journal: :Eurasian journal of soil science 2023

Soil degradation is a global phenomenon affecting the productivity of agricultural land. Due to low vegetation cover and aggressive climate, Morocco presents significant case soil through erosion desertification. The Ouergha catchment highly vulnerable this scourge. objective study was assess sensitivity land in area. MEDALUS approach, widely used Mediterranean region, soils degradation/deserti...

2016
Xuefeng Zhang Jianming Niu Alexander Buyantuev Qing Zhang Jianjun Dong Jing Zhang

Ecosystem services (ESs) and their transformations in northern China play a crucial role in regional sustainability. During the past several decades, grassland degradation has become one of the most important ecological and economic issues in this region. Therefore, understanding the impacts of grassland degradation and restoration on ESs is essential for maintaining ecological resilience and s...

2011
Akira Yasutake Jin Ping Cheng Masako Kiyono Shimpei Uraguchi Xiaojie Liu Kyoko Miura Yoshiaki Yasuda Nikolay Mashyanov

A chemical factory, using a production technology of acetaldehyde with mercury catalysis, was located southeast of Qingzhen City in Guizhou Province, China. Previous research showed heavy mercury pollution through an extensive downstream area. A current investigation of the mercury distribution in ambient air, soils, and plants suggests that mobile mercury species in soils created elevated merc...

2016
Elena V. Danzhalova S. N. Bazha P. D. Gunin T. I. Kazantseva

The research shows that widely used key measures of vegetation structure (species diversity, projected cover and above-ground phytomass) are not always suitable as indicators of pasture degradation. Based on an analysis above-ground phytomass composition, new quantitative indices are offered that give a more realistic picture of rangeland condition in Mongolia.

Journal: :Remote Sensing 2017
Meichen Jiang Shufang Tian Zhaoju Zheng Qian Zhan Yuexin He

For centuries, the rapid development of human society has already made human activity the dominant factor in the terrestrial ecosystem. As the city of greatest importance in China, the capital Beijing has experienced eco-environmental changes with unprecedented economic and population growth during the past few decades. To better understand the ecological transition and its correlations in Beij...

Journal: :Remote Sensing 2017
Zhihua Liu Michael C. Wimberly Francis K. Dwomoh

The Upper Guinea Forest (UGF) region of West Africa is one of the most climatically marginal and human-impacted tropical forest regions in the world. Research on the patterns and drivers of vegetation change is critical for developing strategies to sustain ecosystem services in the region and to understand how climate and land use change will affect other tropical forests around the globe. We c...

Grazing of Livestock is one of the factors having influence on the structure and dynamics of the range land vegetation. Grazing management is a vital factor to control the intensity of the rangeland ecosystems degradation. In this study, plant functional traits and diversity and richness properties were used to assess the vegetation response to different grazing intensities. This was done in No...

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