Báo cáo lâm nghiệp: "Effects of light intensity on the growth and energy balance of photosystem II electron transport in Quercus alba " potx

... article Effects of light intensity on the growth and energy balance of photosystem II electron transport in Quercus alba seedlings G. Geoff WANG a *, William L. BAUERLE b a Department of Forest and Natural ... shade intensity increased. The apparent reduction in electron transport rate (ETR) through photosystem II (PS II) increased with l...

Ngày tải lên: 08/08/2014, 00:22

... Coutts M.P., Philipson J.J., The influence of mineral nutrition on the root development of trees: III. Plasticity of root growth in res- ponse to changes in the nutrient environment, J. Exp. Bot. ... illustrate the importance of adjusting field fer- tilization protocols for the anticipated degree of moisture stress on the site. The 60 g fertilization rate app...

Ngày tải lên: 08/08/2014, 01:22

... dividing the runoff into components using the analysis of hydrograph by separation its recession limb and determining only the runoff con- stituents and their comparison also in the process of time. ... of runoff can be related to the loss and restoration of both interception and transpiration. On the other hand, the drainage-induced change led to different...

Ngày tải lên: 07/08/2014, 03:22

... consumption of food in the creation of a fat body in females of Lochmaea caprae (L.) Differences of imagoes in the consumption of food in particular variants cannot be confronted with findings ... evaluation. RESULTS Effects on a nutritive plant A basic condition of the rapid increase in the nitro- gen content in birch leaves was demonstrated by the analysi...

Ngày tải lên: 07/08/2014, 10:21

... spruce stand (26.0) and in the organo- mineral horizon on the beech stand area. On the contrary, the highest value was found in the beech stand (27.3) in forest floor and in the spruce stand A h ... in the broadleaved stand. e values of soil reaction also indicate higher acidity in the spruce monoculture than in the beech stand. Regarding the...

Ngày tải lên: 07/08/2014, 10:21

... plus non-inoculated control plants. One-month-old seedlings were inoculated with 10 mL of the target spore suspension of the corresponding fungus. The final inoculum concentration was of 10 6 ... 2. Effect of inoculation and the type of substrate on the con- centration of nutrients in needles of containerised P. pinea seedlings. p/v = peat/vermiculite (1:1, v:v...

Ngày tải lên: 08/08/2014, 00:22

... studied the correlation existing between the annual and the seasonal rainfall and the annual trunk growth, and the only correlation shown is that of the rainfall values in the spring season, there ... correlation between the growth of the rings and the rainfall in any other season or the annual total. Figure 6 shows the relationship between these two...

Ngày tải lên: 08/08/2014, 00:22

... component in the spruce ecosystem, con- tributing in the replacement of senescent spruce stands. The decline of the beetle outbreak was probably due to the unfa- vourable weather conditions in the ... montagnes 1. INTRODUCTION The Tatra Mountains are the highest mountain range in the Carpathian arch. They are located along the border between Slovakia (75% of...

Ngày tải lên: 08/08/2014, 00:22

... factors acting either on the distal portion of a parent shoot before the extension of its off- spring shoots (experiments 1 and 2) or on the offspring shoots themselves during their extension (experiment ... at the level of the parent shoot. On the other hand, clipping a complete distal offspring shoot at the peak of its extension period increased the length a...

Ngày tải lên: 08/08/2014, 00:22

... plant- ing and at the end of each of the first 5 growing seasons. Bonanza Creek seedlings were also measured at the end of the sixth, ninth, and eleventh growing seasons, and Fort Richardson seedlings ... vegetation on spruce 579 and remained below freezing until spring. Many of the seed- lings in treatments with little competition from other vegeta- tion had not...

Ngày tải lên: 08/08/2014, 01:21