The effect of lattice mismatch on the chemical ordering of epitaxial FePt films was studied. The results showed that the lattice constant scd of the FePt films decreased with increasing lattice mismatch « from about 2.23% to 6.33%. Upon further increase of « to about 8.8%, c increased. On the other hand, the variation of the lattice constant sad of the FePt films showed a reversal behavior to t...

1. Organism and Environment 1.1 Man-environment interactions 1.2 Ecology and human evolution 2. Ecological Constraints of Human Cultural Evolution 2.1 The meaning of natural resources 2.2 Ecology and life style 2.3 The cultural value of plants and animals 2.4 Ethnoecology 3. The Human Impact 3.1 Changing the “ecological order” 3.2 Ecological knowledge and survival 4. Applied Ecology, Culture, a...

the notion of sustainable development has rapidly gained considerable attention since the lastdecades of the twentieth century. it has become a locus for global paradigm shift on environment and development issues particularly after rio conference in 1992. the comparative analysis of agenda 21 and major un documents, mdg, and rio+20 as well as some major sources are made to provide a context fo...

development of remote sensing (rs) and gis techniques and that of landscape metrics in the late 1980s have caused to introduce a new dimension in the landscape ecology arena (the relationship between spatial patterns and ecological processes). however, scale dependence of some of landscape metrics and rs systems of different spatial resolution has resulted in particular attention into selection...

In stark contrast to individual-level approaches to health promotion, ecological approaches target multiple influences of health behavior, because changing individuals and their behaviors may be temporary without corresponding changes to the environment in which they are embedded. Using an ecological approach, supportive environmental factors are considered when designing effective and sustaina...

Introduction Biodiversity, short for biological diversity, is the variety and variability of living organisms and the ecological complexes in which they live (Primack, 1993). One of the more widely accepted definitions (Noss and Cooperrider, 1994) extends the concept of biodiversity to include “the ecological and evolutionary processes that keep [these systems] functioning, yet ever changing an...

Ecological stoichiometry has generated new insights into how the balance of elements affects ecological interactions and ecosystem processes, but little is known about the ecological and evolutionary dynamics of stoichiometric traits. Understanding the origins and drivers of stoichiometric trait variation between and within species will improve our understanding about the ecological responses o...

In the last decade environmental policies, particularly ecological resettlement, have changed China’s pastoral areas. This paper explores the diffi culty in conserving rangeland through ecological resettlement. The paper focuses on how ecological resettlement policy has been translated into practice, and how the affected people responded with migration decisions. Empirical fi ndings in a pastor...

While average temperature is likely to increase in most locations on Earth, many places will simultaneously experience higher variability in temperature, precipitation, and other climate variables. Although ecologists and evolutionary biologists widely recognize the potential impacts of changes in average climatic conditions, relatively little attention has been paid to the potential impacts of...