نتایج جستجو برای: because of overgrazing
تعداد نتایج: 21165699 فیلتر نتایج به سال:
Desertification of the arid and semi-arid lands of the world has been proceeding for more than a thousand years.Human-induced degradation in these areas is regularly cited as one of the principal causes of desertification.Euphrates and Tigris Basin as the case study of this research in some aspects is almost unique in the world. But thisbasin has been confronted to progressive desertification. ...
Sustainable development is a development that meets the needs of present generation while not compromising the ability of future generations to also meet their needs. There are 2 cases of sustainability. Case-1 is due to the discrepancy of environment and Case-2 is due to the change of environment. User, usage context and cultural aspects play important roles in the sustainability of system. Di...
The present investigation of forest ecosystem was undertaken during May 2010 to Dec 2010. The main aim of the study was to analyze the impact of biotic interferences on Yousmarg forest ecosystem. The cumulative effect of the biotic interferences was signif icantly seen in the reduction of vegetation cover. The present study revealed that the prominent factor for the exploitation of the vegetati...
The relationship between landuse/landcover (LULC) changes and land degradation in two Mediterranean sites is investigated using remotely sensed and ancillary data. The areas of study, the Xaló river catchment in the north of the Alicante province in southeast Spain and the Aegean island of Lesbos, Greece, have both been subjected to changes in LULC, such as abandonment, overgrazing, forest fire...
Grassland desertification by grazing and the resulting micrometeorological changes in Inner Mongolia
Overgrazing is one of the most primary causes of desertification in semi-arid zones of China. From 1992 to 1994 we conducted a grazing experiment in Naiman (lat. 42◦58′N, long. 120◦43′E, 345 m asl), Inner Mongolia, China to elucidate desertification mechanisms. Our experimental field, which was covered with some short grasses, legumes and forbs, included four plots where grazing sheep numbers d...
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