標(biāo)題: Titlebook: Directions in Tropical Agroforestry Research; Adapted from selecte P. K. R. Nair,C. R. Latt Book 1998 Springer Science+Business Media Dordr [打印本頁] 作者: Interjection 時(shí)間: 2025-3-21 16:37
書目名稱Directions in Tropical Agroforestry Research影響因子(影響力)
書目名稱Directions in Tropical Agroforestry Research影響因子(影響力)學(xué)科排名
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書目名稱Directions in Tropical Agroforestry Research讀者反饋
書目名稱Directions in Tropical Agroforestry Research讀者反饋學(xué)科排名
作者: 預(yù)防注射 時(shí)間: 2025-3-21 23:22
Soil improvement by trees in sub-Saharan Africa, through (1) input of N by biological N. fixation, (2) retrieval of nutrients from below the rooting zone of crops and (3) reduction in nutrient losses from processes such as leaching and erosion. Trees can increase the availability of nutrients through increased release of nutrients from soil organ作者: 抗原 時(shí)間: 2025-3-22 00:39 作者: Biofeedback 時(shí)間: 2025-3-22 05:25 作者: Mutter 時(shí)間: 2025-3-22 11:14 作者: NAV 時(shí)間: 2025-3-22 13:44
Shade management in coffee and cacao plantations,so compete for growth resources. For example, shade trees buffer high and low temperature extremes by as much as 5 °C and can produce up to 14 Mg ha. yr. of litterfall and pruning residues, containing up to 340 kg N ha. yr.. However, N. fixation by leguminous shade trees grown at a density of 100 to作者: NAV 時(shí)間: 2025-3-22 18:20 作者: Minuet 時(shí)間: 2025-3-22 21:23 作者: CIS 時(shí)間: 2025-3-23 01:49 作者: Apoptosis 時(shí)間: 2025-3-23 06:35
Directions in tropical agroforestry research: past, present, and future,d experiential approach but have subsequently followed a deductive and experimental approach that includes hypothesis testing and the development of predictive capability; agroforestry research is thus being transformed into a rigorous scientific activity. The research agenda, so far, has given high作者: LEER 時(shí)間: 2025-3-23 10:55 作者: 擴(kuò)大 時(shí)間: 2025-3-23 14:31 作者: 代替 時(shí)間: 2025-3-23 18:51 作者: 前奏曲 時(shí)間: 2025-3-24 00:18 作者: Expertise 時(shí)間: 2025-3-24 04:14
Nutrient cycling under mixed-species tree systems in southeast Asia,ristics, tree age, site factors (e.g., drought), soil fertility (e.g., available P, metal toxicities) and unreliable methods of measuring N.-fixation. Of the available techniques for assessing N.-fixation by trees, the total N difference method (TND) is the simplest. The contribution of roots to ass作者: Consequence 時(shí)間: 2025-3-24 07:59 作者: 拋射物 時(shí)間: 2025-3-24 12:22
Shade management in coffee and cacao plantations,4?6 m. ha. yr...The relative importance and overall effect of the different interactions between shade trees and coffee/cacao are dependent upon site conditions (soil/climate), component selection (species/varieties/provenances), belowground and aboveground characteristics of the trees and crops, an作者: grudging 時(shí)間: 2025-3-24 14:52 作者: myelography 時(shí)間: 2025-3-24 19:11 作者: dowagers-hump 時(shí)間: 2025-3-25 01:44
Policy issues in agroforestry: technology adoption and regional integration in the western Braziliadopted, and if so, by whom and with what likely impact on the development objectives at hand. It highlights characteristics that lend socioeconomic and agronomic ‘a(chǎn)gility’ — connoting flexibility to easily shift production systems and accompanying marketing strategies in response to unforeseen or ra作者: 禮節(jié) 時(shí)間: 2025-3-25 05:42
Directions in tropical agroforestry research: past, present, and future, the high expectations that were raised about the role and potential of agroforestry as a development vehicle have not been fulfilled. In order to overcome this, it is imperative that research be focused on the generation of appropriate, science-based technologies of wide applicability, especially u作者: Mettle 時(shí)間: 2025-3-25 10:27 作者: dura-mater 時(shí)間: 2025-3-25 12:20 作者: 儀式 時(shí)間: 2025-3-25 19:26
https://doi.org/10.1007/978-3-322-86258-7ristics, tree age, site factors (e.g., drought), soil fertility (e.g., available P, metal toxicities) and unreliable methods of measuring N.-fixation. Of the available techniques for assessing N.-fixation by trees, the total N difference method (TND) is the simplest. The contribution of roots to ass作者: homocysteine 時(shí)間: 2025-3-25 23:10 作者: 開花期女 時(shí)間: 2025-3-26 01:40
https://doi.org/10.1007/978-3-322-86258-74?6 m. ha. yr...The relative importance and overall effect of the different interactions between shade trees and coffee/cacao are dependent upon site conditions (soil/climate), component selection (species/varieties/provenances), belowground and aboveground characteristics of the trees and crops, an作者: Bricklayer 時(shí)間: 2025-3-26 07:59 作者: 煉油廠 時(shí)間: 2025-3-26 10:09
https://doi.org/10.1007/978-3-322-86257-0ard more rigorous statistical analyses of better and larger data sets is encouraging. Priority areas for future research include theoretical and empirical analyses of agroforestry adoption decisions, improved economic analyses, and policy studies at local, national, and regional levels.作者: Anthem 時(shí)間: 2025-3-26 13:07
https://doi.org/10.1007/978-3-322-86257-0dopted, and if so, by whom and with what likely impact on the development objectives at hand. It highlights characteristics that lend socioeconomic and agronomic ‘a(chǎn)gility’ — connoting flexibility to easily shift production systems and accompanying marketing strategies in response to unforeseen or ra作者: RLS898 時(shí)間: 2025-3-26 19:33
https://doi.org/10.1007/978-3-322-86257-0 the high expectations that were raised about the role and potential of agroforestry as a development vehicle have not been fulfilled. In order to overcome this, it is imperative that research be focused on the generation of appropriate, science-based technologies of wide applicability, especially u作者: CAB 時(shí)間: 2025-3-26 23:44 作者: 一條卷發(fā) 時(shí)間: 2025-3-27 01:44
Book 1998Scherr (1995) estimate that these tropical hillside areas are inhabited by 500 million people, or one-tenth of the current world population, many of whom practice subsistence agriculture. The region most affected is Asia which has the lowest area of arable land per capita. Aside from limited areas o作者: Apoptosis 時(shí)間: 2025-3-27 05:47 作者: otic-capsule 時(shí)間: 2025-3-27 12:06 作者: 積極詞匯 時(shí)間: 2025-3-27 15:56 作者: 預(yù)知 時(shí)間: 2025-3-27 21:51
978-90-481-5025-0Springer Science+Business Media Dordrecht 1998作者: nuclear-tests 時(shí)間: 2025-3-28 00:13
https://doi.org/10.1007/978-3-8349-4357-6and intensity of interactions between the components. The net effect of these interactions is often determined by the influence of the tree component on the other component(s) and/or on the overall system, and is expressed in terms of such quantifiable responses as soil fertility changes, microclima作者: 一大群 時(shí)間: 2025-3-28 03:57
https://doi.org/10.1007/978-3-322-86258-7 through (1) input of N by biological N. fixation, (2) retrieval of nutrients from below the rooting zone of crops and (3) reduction in nutrient losses from processes such as leaching and erosion. Trees can increase the availability of nutrients through increased release of nutrients from soil organ作者: AGATE 時(shí)間: 2025-3-28 07:41 作者: Needlework 時(shí)間: 2025-3-28 11:42
https://doi.org/10.1007/978-3-322-86258-7rowing trees are mostly grown in monocultures. However, questions are now being raised about the long-term sustainability of their growth as well as their effects on site quality. Losses of N and P from the site through biomass harvest and during site preparation constitute a major nutrient drain. A作者: cumulative 時(shí)間: 2025-3-28 17:54
https://doi.org/10.1007/978-3-322-86258-7ed population growth has led to the intensified cultivation of large areas of the sloping lands, exacerbating the problem of soil erosion. Although research shows that alley cropping and other contour agroforestry systems can stabilize the sloping lands, these systems have not been widely adopted by作者: LIMN 時(shí)間: 2025-3-28 19:38 作者: BARGE 時(shí)間: 2025-3-29 00:48 作者: Femine 時(shí)間: 2025-3-29 06:40
https://doi.org/10.1007/978-3-322-86257-0eceived the attention they deserve. This paper reviews the progress in one of these under-researched areas, socioeconomics. A quantitative and qualitative analysis of published socioeconomic research papers and a survey of agroforestry socioeconomic researchers are used to evaluate the achievements 作者: LITHE 時(shí)間: 2025-3-29 07:56
https://doi.org/10.1007/978-3-322-86257-0ic growth, poverty alleviation, and environmental sustainability. Yet in many areas of the developing world where AFS have proven their agronomic potential, they have yet to be widely adopted. This paper approaches the issue with a focus on one such area — the western Brazilian Amazon, an area where作者: Free-Radical 時(shí)間: 2025-3-29 11:33
https://doi.org/10.1007/978-3-322-86257-0d experiential approach but have subsequently followed a deductive and experimental approach that includes hypothesis testing and the development of predictive capability; agroforestry research is thus being transformed into a rigorous scientific activity. The research agenda, so far, has given high作者: violate 時(shí)間: 2025-3-29 16:34
Forestry Scienceshttp://image.papertrans.cn/e/image/280694.jpg
