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As the first book to examine the origins and spread of agriculture and pastoralism in Europe and Asia as a whole, this major contribution should be essential reading for archaeologists, anthropologists, biologists and geographers. Adopting a novel approach to the subject, the authors examine it first in terms of seven different disciplinary perspectives: social, ecological, genetic, linguistic, biomolecular, epidemiological and geogrpahical. Then, 20 case studies are presented, which are based primarily on archaeological and biological evidence and which relate to three major regions: Southwest Asia, Europe and Central Asia to the Pacific. The book concludes with an overview of Eurasia as a whole.; The transition from hunting and gathering to agriculture had revolutionary consequences for human society. It led to the emergence of urban civilizations and ultimately to humanity's almost complete dependence on relatively few domesticated animals and plants. The subject has been much studied, but the results have tended to be interpreted largely in terms of local cultural sequences, with insufficient comparison made with evidence from other areas. In contrast, this book provides a continental- scale framework, with its scope extended to pastoralism because in Eurasia both the raising of livestock and the cultivation of crops were integral components of the agricultural "revolution" from its inception some 10,000 years ago.; Comprehensive and authoritative, "The Origins and Spread of Agriculture and Pastoralism in Eurasia" should appeal strongly to the wide readership of students and specialists concerned with the prehistoric antecedents of modern civilization. ... Read more

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This digital document is a journal article from Agriculture, Ecosystems and Environment, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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Little is known about the predictive value of landscape complexity and farm specialisation for land-use intensity, although this is critical for regional agri-environmental schemes and conservation of biodiversity. Here, we analysed land-use intensity of annual crop fields of 30 farms in northern Germany that were located in 15 landscapes differing in structural complexity ranging from <15% to >65% non-crop habitats. The proportion of arable land per landscape was used as simple predictor of landscape complexity due to its close correlation with habitat-type diversity, and the proportion of arable land per farm acted as an indicator for farm specialisation due to its negative correlation with stock farming. Land-use intensity was quantified using questionnaires. Landscape complexity and farm specialisation were related to several but not all indicators of land-use intensity. Structurally simple landscapes were related to more nitrogen input and higher crop yields, and farms specialised on annual crops had reduced crop-species diversity, larger fields, higher crop yields and more pathogen species. In contrast to general expectations, pesticide use in annual crop fields was exceptionally high and not a function of landscape complexity or farm specialisation. Our results show that generalisations such as ''farms specialised on annual crops and structurally simple landscapes show increased land-use intensity'' may be misleading. ... Read more

Product Description
This digital document is a journal article from Agriculture, Ecosystems and Environment, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Roots are an important sink for photoassimilates and carbon input to soil. Here the root growth and biomass of different spring sown annuals was determined to estimate the shoot:root (S:R) ratios and carbon inputs in the typical Nordic agroecosystem. The data, collected in southern Finland, present evidence for large difference in root growth dynamics and biomass input between spring oilseed rape (Brassica rapa L.) and annual ryegrass (Lolium multiflorum Lam. var. italicum) whereas the rooting of spring sown barley (Hordeum vulgare) and oats (Avena sativa) was related. The four crops were sown at the same time in a field with a fine sand soil (Eutric Cambisol) with good nutrient and water supply. During one growing season, root growth was determined 12 times to a soil depth of 50cm by using a minirhizotron-micro-video camera technology. At anthesis, root biomass and morphological parameters were measured to 60cm soil depth at 5cm intervals, with destructive soil sampling and image analysis of washed roots. The root growth rate of oilseed rape was clearly faster and that of rye grass slower compared with the other crops. At anthesis, the average total root dry biomass (0-60cm) was160g for barley, 260g for oats, 340g for ryegrass, and 110gm^-^3 for oilseed rape. Also, the root length density and surface area of oilseed rape was less than that of other crops. Most of the biomass (59-80%) was accumulated the upper 20cm of the soil. Shoot to root ratios (at anthesis for the seed crops) of 7.1, 4.4, 4.2 and 2.5 for barley, oats, oilseed rape, and ryegrass respectively, could be used for an approximation to estimate the amount of root biomass left in the 0-60cm soil layer under Nordic long day conditions. In contrast to the seed crops, the root growth rate and density of ryegrass was high in the late season. Thus, ryegrass would be an efficient catch crop after harvest of cereals. ... Read more