LANDSCAPE ECOLOGY in AGROECOSYSTEMS MANAGEMENT - CHAPTER 6 pdf

... forest buffer were installed under CS-CRP in Iowa (USDA-NRCS-PRMS 2001). In contrast, only 15 86 acres were installed under CS-CRP in the same time period in Georgia (USDA-NRCS-PRMS 2001). The distribution ... establishing and maintaining riparian buffers in agricultural landscapes are interested in buffers much wider than the minimum requirement. In general, the first landowner...

Ngày tải lên: 11/08/2014, 10:22

... ␮g·m –2 ·h –1 ) from Soil in Shelterbelts of Various Ages and Adjoining Cultivated Fields Date Shelterbelts Fields Adjoining Shelterbelts 7-Year-Old 140-Year-Old 7-Year-Old 140-Year-Old March 12 April ... Shelterbelts of Various Ages and Adjoining Cultivated Field Date Shelterbelts Fields Adjoining Shelterbelts 7-Year-Old 140-Year-Old 7-Year-Old 140-Year-Old March 12 April 7 May 8 June 5...

Ngày tải lên: 11/08/2014, 10:22

... example, shelterbelt planting in a landscape consisting solely of cultivated fields, although increasing evapotrans- piration rates of the whole area, protects fields against winds, and decreases their evapotranspiration ... was sustained by natural 0919 ch02 frame Page 10 Tuesday, November 20, 2001 6: 31 PM © 2002 by CRC Press LLC • Increase the water storing capacities in the lan...

Ngày tải lên: 11/08/2014, 10:22

... 0.78 (6. 86) 0 .63 0.37 Spain 63 6 380 255 3.88 0 .60 0.40 France 965 541 424 4.57 0. 56 0.44 Russia 62 0 410 210 6. 23 0 .66 0.34 Finland 549 234 315 22.5 0.43 0.57 Sweden 66 4 233 431 24.1 0.35 0 .65 Norway ... mm Rn = 114 W m -2 LE = - 90 W m -2 S = - 15 W m -2 G = - 6 W m -2 0.2 0.2 0.2 0.4 0.4 0.4 0 .6 0 .6 0 .6 0.1 0.2 2 3 4 0.2 0.4 0 .6 10 -1...

Ngày tải lên: 11/08/2014, 10:22

... Protozoa Nematoda Lumbricidae Enchytraeidae Acarina Collembola Winged insects mainly larvae 440.0 557.4 940.0 50.9 11.2 47.4 109 .6 1190.0 314 .6 56. 0 26. 5 1.3 20.5 14 .6 525.0 8 16. 6 3840.0 198 .6 475.7 65 .6 4883.0 1 360 .0 499.5 254.2 88.7 22 .6 21.1 223.7 Total ... pressure 24.7 11.9 2.1 14.7 6. 1 2.4 34.2 16. 3 2.1 26. 4 10.1 2 .6 68.7 19.0 3 .6 49.5 11.0 4.5 Table 8.1...

Ngày tải lên: 11/08/2014, 10:22

... mobile, moving from the field margin into the crop over short intervals. Introduced field margin strips were rapidly colonized, so that overwintering populations were similar to pre-existing margin habitat ... Affecting Flora Diversity in Field Margin Systems in European Landscapes Landscape Scale Studies Detailed analyses of the margin flora in contrasted landscapes in the three co...

Ngày tải lên: 11/08/2014, 10:22

... self-supportive economic systems • Domination of qualitative changes in the agricultural landscape related to increased inputs of matter and energy to agroecosystems, beginning with the industrial-agricultural ... district Leucobryo-Pinetum Pino-Quercetum 41.3% Pine 88.1% Oak 3 .6% Beech 0 .6% Alder 4.0% Dolina rodkowej Noteci [ Valley of the Middle-Note ´ c ] Peats, alluvial s...

Ngày tải lên: 11/08/2014, 10:22

... derived by estimating algorithms from Meyer-Aurich et al. (1998) in the multi-objective decision-making tool MODAM.) degree of success 0.0 0.2 0.4 0 .6 0.8 1. 0 winter-wheat winter-rape degree of ... conditions of relevant indi- cators with reasoning or calculations. The main problems of designing and using such tools lie in minimizing the amount of necessary input data and reducing the...

Ngày tải lên: 11/08/2014, 10:22

... century, such as restoration ecology, ecological engineering, landscape ecology, ecological toxicology, and conservation biology. These fields of investigation, including agro- landscape ecology, have contributed ... Landscape ecology: designing sustainable agricultural landscapes, in Integrating Sustainable Agriculture, Ecology, and Environmental Policy, Olson, R. K., Ed., Hawort...

Ngày tải lên: 11/08/2014, 10:22

... 19 86. Landscape Ecology . Wiley & Sons. New York. 61 9 pp. Granstedt A. 2000. Increasing the efficiency of plant nutrients recycling within the agricultural system as a way of reducing ... facilitate the incorporation of landscape ecology guidelines into agricultural policies. The same is true for elaboration of operational guidelines for managing biogeochemical bar- riers, e....

Ngày tải lên: 11/08/2014, 10:22