نتایج جستجو برای: land destruction
تعداد نتایج: 153619 فیلتر نتایج به سال:
While intended to increase the habitat available to endangered species, the restrictions of the Endangered Species Act (ESA) increase the costs of harboring an endangered species to private landowners and create incentives for private landowners to reduce habitat. This paper illustrates the incentive for habitat destruction with a simple model of private land use under the ESA, and uses it to p...
10.1080/10242690600853373 Defence and Peace Economics 24-2694 (print)/1476-8267 (online) Original Articl 2 06 Taylor & Francis 0Y ng-MingChang [email protected] This paper presents a simple model to characterize the outcome of a land dispute between two rival parties using a Stackelberg game. Unlike Gershenson and Grossman (2000), we assume that the opposing parties have access to different techn...
Wherever grasslands and forest are replaced by rooftops and roads, the movement of water across the landscape is radically altered. Some of these changes are intentional, and they render the land more useful for the purpose for which it has been altered. Yet some of the changes are unintended and can have severe consequences. Flooding, channel erosion, landsliding, and destruction of aquatic ha...
Thousands of fossil bird bones from the Hawaiian Islands collected since 1971 include remains of at least 39 species of land birds that are not known to have survived into the historic period; this more than doubles the number of endemic species of land birds previously known from the main islands. Bones were found in deposits of late Quaternary age; most are Holocene and many are contemporaneo...
During the past decades, natural hazards such as floods, landslides and forest fires have caused major loss of human lives and the destruction of economic land social infrastructure, as well as environmental damages. The Italian National Project: PROSA (PRodotti di Osservazione Satellitari per l'Allerta Meteorologica) is a pilot project funded by the Italian Space Agency, which aims at contribu...
Date: 14.03.2016 Supervisor: Snell Rebecca Introduction Although natural habitat destruction through deforestation is widely recognized as one of the major reasons for the loss of biodiversity in the tropics, the lack of quantitative data concerning both the changes in biodiversity and the drivers behind this change makes it difficult to assess the real extent of decline in biodiversity due to ...
Humans are always trying to change land to use natural resources to meet their needs. One of the land use changes that take place in order to benefit from sustainable water resources is dam construction. Dam construction has many positive and negative consequences for the environment from the beginning to use. The objective of this study was to investigate the effect of Gotvand Dam on the probl...
Habitat and ecosystem fragmentation and, consequently, the loss of landscape connectivity are major causes of biodiversity destruction, leading to disruption of material, energy, and information flow at the landscape scale. Given the importance of this issue, the current study aimed to evaluate the ecological connectivity and spatial planning of Qazvin Province, in order to re-establish and pro...
abstract soil quality is an essential concept for maximum agriculture production without environmental destruction. studying soil physical quality indicators, that express soil structural stability and soil air-water balance in root zone, is one of the most important aspects of soil quality. so determination of optimal range for pore volume distribution is important and this research carried ou...
Imagine a world where the demand for food and other agricultural products is constant or increases regularly as populations and incomes grow. Land can only be used for agriculture or forest. Then the only ways to keep more land in forest are to increase agricultural yields, reduce population growth or depress incomes. The amount of land devoted to agriculture equals the total demand for agricul...
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