標(biāo)題: Titlebook: Nutrient Uptake and Cycling in Forest Ecosystems; Proceedings of the C L. O. Nilsson,R. F. Hüttl,U. T. Johansson Conference proceedings 199 [打印本頁] 作者: 精明 時間: 2025-3-21 16:23
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems影響因子(影響力)
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems影響因子(影響力)學(xué)科排名
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems網(wǎng)絡(luò)公開度
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems網(wǎng)絡(luò)公開度學(xué)科排名
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems被引頻次
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems被引頻次學(xué)科排名
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems年度引用
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems年度引用學(xué)科排名
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems讀者反饋
書目名稱Nutrient Uptake and Cycling in Forest Ecosystems讀者反饋學(xué)科排名
作者: 充滿裝飾 時間: 2025-3-21 20:28 作者: 致命 時間: 2025-3-22 02:21
Towards an understanding of the relations between tree nutrition, nutrient cycling and environmentsity to manage forest land for environmental values as well as for forest yield requires new interdisciplinary approaches in the study of the roles of plant nutrients in the forest. Even more branches of biological and environmental sciences than those just mentioned must be involved.作者: Atheroma 時間: 2025-3-22 07:12 作者: 群居動物 時間: 2025-3-22 12:45 作者: 斷言 時間: 2025-3-22 16:49 作者: 可忽略 時間: 2025-3-22 17:35 作者: SHRIK 時間: 2025-3-22 22:38 作者: Obituary 時間: 2025-3-23 02:59 作者: 使尷尬 時間: 2025-3-23 06:27
Nutrient supply of forest soils in relation to management and site historyoils. Examples are given for the effects of tree species, harvesting, site history, changes of species and specific soil conditions, nitrogen deposition, and forest growth dynamics. It is concluded from these examples that all of these factors may contribute to soil acidification in forest ecosystem作者: 平庸的人或物 時間: 2025-3-23 12:20 作者: 巨大沒有 時間: 2025-3-23 13:55
Nitrogen mineralization and potential nitrification at different depths in acid forest soilssts in S Sweden and E Denmark for determination of net N mineralization and potential nitrification. The samples were sieved while still fresh and incubated at a constant temperature (15°C) and soil moisture for 74–117 days with periodic subsamplings. Net N mineralization rates, expressed per g orga作者: 說笑 時間: 2025-3-23 18:24 作者: tooth-decay 時間: 2025-3-23 22:46
Effects of forest fertilization on nitrogen leaching and soil microbial properties in the Northern Cg) may pose nitrate problems for the groundwater or decrease microbial activity..With the aim to investigate potential nitrogen leaching after fertilization we set up an experiment employing intact soil cores (11 cm diameter, 20–40 cm long) from a mixed forest and a . stand (soil type Rendsina) in t作者: 機(jī)構(gòu) 時間: 2025-3-24 03:10 作者: 退出可食用 時間: 2025-3-24 10:22
Decomposition and nitrogen dynamics of fine roots of Norway spruce (, (L.) Karst) at different sitesroot litter-bag techniques. The seasonal decomposition of the finest roots was investigated in a 40-year-old high site quality stand grown on brown lessive soil at different depths as part of productivity studies. The fine root decomposition studies were conducted on 8 permanent plots in the Estonia作者: 搖擺 時間: 2025-3-24 10:40
Quantification of ammonium sorption in acid forest soils by sorption isothermse soil profile. Two haplic podzols (originating from Phyllite and Granite) from the German Fichtelgebirge were used. Exchange isotherms were obtained from batch experiments with NH.. concentrations between 0.01 to 0.6 mmol NH.. L.. Background solutions had a composition close to the natural soil sol作者: 名詞 時間: 2025-3-24 15:40
Soil changes in different age classes of Norway spruce (, (L) Karst.) on afforested farmlandhe A- horizon of land previously used in agriculture, and that such soil changes depend on stand development. The investigation was evaluated as a completely randomised design with three treatments representing different age classes of trees: 20 years (Y20), 40 years (Y40) and 55 years (Y55). Eighte作者: Anhydrous 時間: 2025-3-24 22:16 作者: Generalize 時間: 2025-3-25 00:34
Measurements of abundances of 15N and 13C as tools in retrospective studies of N balances and water dances of .N and .C, respectively, are discussed. Most evidence is from the Swedish Forest Optimum Nutrition Experiments, which have been running for two decades. Annual additions of N have been given either alone or in combination with other elements, notably P and K, every third year. Processes le作者: Gyrate 時間: 2025-3-25 07:17
Monitoring uptake and contents of Mg, Ca and K in Norway spruce as influenced by pH and Al, using miuring long-range transport into the shoot, by multiple stable isotope labelling. The roots of two- and three-year-old spruce trees originating from soil culture were removed from the soil and, in part or in toto, exposed to labelling solutions containing the stable isotopes .Mg or .Mg, .K and .Ca or作者: Archipelago 時間: 2025-3-25 10:04
Effects of ammonium sulphate application on the chemistry of bulk soil, rhizosphere, fine roots and er), amounts of living and dead fine roots, root length density and specific root length density were investigated in a 28 year old Norway spruce stand in SW Sweden. The treatments started in 1988. Core samples of the LFH layer and mineral soil layers were sampled in control (C) and ammonium sulphat作者: FLORA 時間: 2025-3-25 13:09 作者: habitat 時間: 2025-3-25 18:56
ologies for modern enterprises, enhancing their performance and their decision making processes. Since the 1990s the Internet has been the outstanding driving force for application development in all domains. An increase in the demand for resource sharing (e. g. , computing resources, s- vices, meta作者: Oversee 時間: 2025-3-25 20:04 作者: 腐敗 時間: 2025-3-26 02:33
Dale W. Colerest within the patent domain, because if a retrieval system makes some patents hard to find, then patent searchers will have a difficult time retrieving these patents. This may mean that a patent searcher could miss important and relevant patents because of the retrieval system. In this paper, we d作者: padding 時間: 2025-3-26 05:55
T. Persson,A. Wirén presented at GLOBE 2010.Gives a detailed coverage of the stThe LNCS journal Transactions on Large-Scale Data- and Knowledge-Centered Systems focuses on data management, knowledge discovery, and knowledge processing, which are core and hot topics in computer science. Since the 1990s, the Internet ha作者: 消極詞匯 時間: 2025-3-26 10:05 作者: genuine 時間: 2025-3-26 15:35
H. Insam,A. Paloj?rvi only retrieve the sought information, but also filter out irrelevant documents, while giving the relevant ones the highest ranking. Focusing on biomedical information, this work investigates how to improve the ability for a system to find and rank relevant documents. To achieve this goal, we apply 作者: 形上升才刺激 時間: 2025-3-26 19:37
C. E. Prescottl case is represented by genotyping procedures, which produce a large amount of documents whose content may represent a potentially important knowledge base. The exploitation of such information requires a proper classification of the elements in the knowledge base, and this can be effectively achie作者: Pepsin 時間: 2025-3-27 00:49 作者: 小口啜飲 時間: 2025-3-27 02:48
G. Matschonat,E. Matznerssing, which are core and hot topics in computer science. Since the 1990s, the Internet has become the main driving force behind application development in all domains. An increase in the demand for resource sharing across different sites connected through networks has led to an evolution of data- a作者: debble 時間: 2025-3-27 07:26 作者: 精密 時間: 2025-3-27 11:39
iobanks and the design of intelligent systems for maritime t.The LNCS journal Transactions on Large-Scale Data and Knowledge-Centered Systems focuses on data management, knowledge discovery, and knowledge processing, which are core and hot topics in computer science. Since the 1990s, the Internet ha作者: FOLLY 時間: 2025-3-27 14:06 作者: indices 時間: 2025-3-27 21:49 作者: 個人長篇演說 時間: 2025-3-27 22:44 作者: CLOT 時間: 2025-3-28 05:46 作者: 使殘廢 時間: 2025-3-28 09:03 作者: 有節(jié)制 時間: 2025-3-28 10:41
R. F. Hüttl,W. Schaafl models are proposed that incorporate these features while preserving the desirable aspects of the traditional Boolean model. An empirical study conducted on four large patent corpora demonstrates that these hybrid models provide better access to the corpus of patents than the traditional Boolean model.作者: 愛了嗎 時間: 2025-3-28 17:14
Dale W. Colel models are proposed that incorporate these features while preserving the desirable aspects of the traditional Boolean model. An empirical study conducted on four large patent corpora demonstrates that these hybrid models provide better access to the corpus of patents than the traditional Boolean model.作者: CREST 時間: 2025-3-28 19:57 作者: Small-Intestine 時間: 2025-3-29 01:13 作者: 變態(tài) 時間: 2025-3-29 05:39 作者: profligate 時間: 2025-3-29 07:44
Soil nutrient supply in natural and managed forestsrevailing processes in the soil system, but subject to overriding human influence. Over relatively short periods of time, the soil nutrient supply can be subject to seasonal fluctuations. Factors affecting long-term nutrient availability are functions of soil mineralogy, the rate of mineralization o作者: 慌張 時間: 2025-3-29 12:14
Nitrogen mineralization and potential nitrification at different depths in acid forest soils was almost complete at a depth of 10–50 cm, where the pH (H.O) was 4.1–4.5. Addition of CaCO. stimulated nitrification in the humus layer, indicating the presence of acid-sensitive nitrifiers, while nitrification in the mineral soil was sometimes stimulated and sometimes inhibited by the addition o作者: 興奮過度 時間: 2025-3-29 18:37
Nitrogen supply rate in Scots pine (, L.) forests of contrasting slope aspecthrough litter layers was 14–17 kg N·ha.·yr., and represented a high proportion of N supply rate. Organic-N leached through litter layers (27.8–37.0 kg N·ha.·yr.) was higher than leached inorganic-N. However, in most cases organic-N did not represent a high proportion of changes in soluble organic-N 作者: 揮舞 時間: 2025-3-29 21:38 作者: lymphedema 時間: 2025-3-30 03:16
Does nitrogen availability control rates of litter decomposition in forests?ous N availability on rates of litter decomposition..The influence of endogenous N availability on rates of litter decomposition was examined in a microcosm experiment. Lodgepole pine (. var. . Engelm.) needle litter collected from N-fertilized trees (525 kg N ha. in ammonium nitrate) were 5 times r作者: homeostasis 時間: 2025-3-30 05:19 作者: ELATE 時間: 2025-3-30 09:37
Quantification of ammonium sorption in acid forest soils by sorption isothermsere established with distribution coefficients ranging from 0.17 to 0.35 for NH.. with highest values in the O horizons. While exchangeable NH.. in acid forest soils is considered to be only a minor long-term sink for deposited NH.., it has its relevance in the seasonal dynamics and transport of NH.作者: AVOID 時間: 2025-3-30 15:00
Soil changes in different age classes of Norway spruce (, (L) Karst.) on afforested farmlandclasses, with Y40 and Y55 having the largest amounts. A reference layer (15–20 cm) was used in calculating the amount of soil C that had accumulated in the horizon since afforestation, being about 10 tonnes ha. of C in Y20 and 19 tonnes ha. in Y40 and Y55..Cation exchange capacity (CEC) and base sat作者: 孤獨(dú)無助 時間: 2025-3-30 17:14 作者: Anterior 時間: 2025-3-30 23:44 作者: 責(zé)問 時間: 2025-3-31 04:42
Monitoring uptake and contents of Mg, Ca and K in Norway spruce as influenced by pH and Al, using miling, (ii) the material taken up from the labelling solution into the plant and (iii) any material released by the plant into the labelling solution..In single-root labelling experiments, roots of three-year-old spruce trees, grown in nursery soil, were exposed to various pH conditions. The exchange作者: DIKE 時間: 2025-3-31 05:02
Effects of ammonium sulphate application on the chemistry of bulk soil, rhizosphere, fine roots and nium ions may have replaced these elements in the soil organic matter. The NS treatment reduced Mg concentration in fine roots in all layers in 1990. The Al concentrations in the rhizosphere and bulk soil were higher in NS plots in all layers, except at 0–10 cm depth, both in 1989 and 1990. The Al c
