Drought limits wood production of Juniperus przewalskii even as growing seasons lengthens in a cold and arid environment

CATENA ◽  
2021 ◽  
Vol 196 ◽  
pp. 104936
Author(s):  
Junzhou Zhang ◽  
Xiaohua Gou ◽  
M. Ross Alexander ◽  
Jingqing Xia ◽  
Fang Wang ◽  
...  
Keyword(s):  
Arid Environment ◽  
Wood Production ◽  
Growing Seasons

scholarly journals Effects of Tree Shelters on the Survival and Growth ofArgania spinosaSeedlings in Mediterranean Arid Environment

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Chamchelmaarif Defaa ◽  
Salwa Elantry ◽  
Sanae Lahlimi El Alami ◽  
Ahmed Achour ◽  
Abdelhamid El Mousadik ◽  
...  
Keyword(s):  
Arid Environment ◽  
Basal Diameter ◽  
Tree Shelters ◽  
Argania Spinosa ◽  
Growing Seasons ◽  
Argan Tree ◽  
Tree Survival ◽  
Survival And Growth ◽  
Systematic Collection ◽  
Early Establishment

The argan tree is endemic species of Morocco. It occupies an area of more than 8700 km2and plays essential ecological and economical roles. In spite of their value, the argan woodlands are subject to rapid and uncontrolled degradation during the last decades, mainly due to overgrazing and systematic collection of argan nuts. The present study was carried out to investigate the effects of two types of tree shelters on survival and growth ofArgania spinosaseedlings planted in the southwest of Morocco in order to improve the results of reforestation programs which usually end by repeated failures. The experiment was conducted in the Mesguina forest for two growing seasons after transplantation in the field. After two years, the use of tree shelters significantly increased tree survival and allowed a gain of 20%. Height growth was positively affected by tree shelters. The use of tree shelters showed no significant decrease in basal diameter. In contrast, the height to diameter ratios of sheltered trees were much higher compared to the control. Thus, the use of the tree shelters could aid the early establishment and growth ofArgania spinosaunder conditions similar to those of the experiment.

Grazing, mulching, and removal of wheat straw in a no-till system in a semi-arid environment

2007 ◽  
Vol 58 (9) ◽  
pp. 907 ◽  
Author(s):  
S. Landau ◽  
Iris Schoenbaum ◽  
D. Barkai ◽  
E. D. Ungar ◽  
A. Genizi ◽  
...  
Keyword(s):  
Grain Yield ◽  
Wheat Straw ◽  
Management Strategies ◽  
Wheat Yield ◽  
Threshold Value ◽  
Arid Environment ◽  
Traditional Practice ◽  
Straw Mulching ◽  
Growing Seasons ◽  
No Till

Straw mulching and no-till technologies have improved grain yields in the 250-mm-rainfall wheatbelt of the northern Negev region of Israel. However, mulching the soil with straw is incompatible with the traditional practice of baling the straw for animal fodder and/or using the stubble for sheep grazing. We compared 3 wheat straw management strategies in a no-till production system, for 4 consecutive growing seasons. The treatments were straw mulching (SM), manual removal of the straw (MR), and grazing by sheep of the straw and stubble (G). The amount of straw cover for treatment SM declined over the years, and did not reach the minimum threshold value deemed necessary to improve wheat grain yield in the region. Grain yield (1150 kg/ha) and quality (volumetric mass, 75 kg/100 L; crude protein, 127 g/kg) did not differ significantly among the 3 treatments. The density of the total seedbank was 3623, 1675, and 1499/m2 in the G, MR, and SM treatments, respectively. This difference was due to a greater amount of small grasses (e.g. Rostraria smyrnacea). However, treatment G hosted significantly less mole and vole activity than treatments SM and MR (1.1 v. 13.6 and 12.4 dens/ha, respectively). Our data suggest that, relative to straw and stubble grazing, straw mulching offers no advantage that can be quantified in terms of wheat yield, under the conditions of this study.

scholarly journals Mapping irrigated areas using multi-sensor remote sensing data in a Mediterranean environment

2017 ◽  
Author(s):  
Pasquale Nino ◽  
Silvia Vanino ◽  
Flavio Lupia ◽  
Guido D'Urso ◽  
Carlo De Michele ◽  
...  
Keyword(s):  
Spatial Scales ◽  
Remote Sensing Data ◽  
Arid Environment ◽  
Earth Observation ◽  
Irrigation District ◽  
Landsat 8 ◽  
Vegetation Development ◽  
Vegetation Growth ◽  
Growing Seasons ◽  
Semi Arid

Water managers need map of irrigated areas (defined as the identification of their location and their areal extent) to plan a rational use of water under limited availability and to prevent the unauthorized withdrawals. Many authors have shown that the Earth Observation techniques are an effective tool for mapping irrigated areas worldwide at different spatial scales (global/regional/and local). This study presents a methodology for mapping irrigated areas in semi-arid environment based on Earth Observation techniques and by fully exploiting datasets freely available processed by open source software and tools. Data acquired with the Landsat 8 Operational Land Imager (OLI) and the new Sentinel 2A MultiSpectral Instrument (MSI) sensors were integrated to obtain cloud free dense time series allowing to monitor the vegetation development throughout the growing seasons. Irrigated areas were identified by analysing the growing patterns under water deficit conditions from NDVI values under the assumption that, in arid and semi-arid environment (like the Mediterranean Region), high trend of vegetation growth are compatible only with irrigation. The method was applied inside the Cixerri Consortium Irrigation District located in South of Sardinia (Italy).

scholarly journals AGRO-ECONOMIC INDICATORS FOR CARROT UNDER GREEN MANURE IN A SEMI-ARID ENVIRONMENT

2021 ◽  
Vol 34 (2) ◽  
pp. 257-265
Author(s):  
JOSIMAR NOGUEORA DA SILVA ◽  
FRANCISCO BEZERRA NETO ◽  
JAILMA SUERDA SILVA DE LIMA ◽  
ARIDÊNIA PEIXOTO CHAVES ◽  
ELIZÂNGELA CABRAL DOS SANTOS ◽  
...  
Keyword(s):  
Production Systems ◽  
Arid Environment ◽  
Crop Productivity ◽  
Biological Properties ◽  
Economic Indicators ◽  
Control Treatment ◽  
Calotropis Procera ◽  
Vegetable Production ◽  
Net Income ◽  
Growing Seasons

ABSTRACT Green manuring is an important management strategy in tuberous vegetable production systems, since it improves the physical, chemical and biological properties of the soil and, consequently, increases in crop productivity and ecosystem balance. The objective of this work was to evaluate the agro-economic efficiency of carrot cultivation as a function of Calotropis procera biomass amounts incorporated into the soil during two growing seasons in a semiarid environment. The experiments were conducted in an experimental design of randomized complete blocks, with four treatments and five replications. The treatments consisted of four C. procera biomass amounts (20, 35, 50 and 65 t ha-1) incorporated into the soil. In each experiment, one plot with carrot without fertilization (control) was planted, for the purpose of comparison. The characteristics evaluated in the carrot were productivities of total and commercial roots, classified productivity of roots and production economic indicators. The maximum productivity of carrot roots of 35.90 t ha-1 was possible with the incorporation of 47.60 t ha-1 of C. procera biomass into the soil. The maximum net income of R$ 33.744,07 ha-1 in the cultivation of this vegetable it was achieved with the addition of the C. procera biomass amount to the soil of 42.81 t ha-1. The return rates obtained for the carrot cultivation in these optimized quantities were 1.53 and 1.28, respectively, of those achieved in the control treatment (without fertilization).

scholarly journals Mapping irrigated areas using multi-sensor remote sensing data in a Mediterranean environment

2017 ◽  
Author(s):  
Pasquale Nino ◽  
Silvia Vanino ◽  
Flavio Lupia ◽  
Guido D'Urso ◽  
Carlo De Michele ◽  
...  
Keyword(s):  
Spatial Scales ◽  
Remote Sensing Data ◽  
Arid Environment ◽  
Earth Observation ◽  
Irrigation District ◽  
Landsat 8 ◽  
Vegetation Development ◽  
Vegetation Growth ◽  
Growing Seasons ◽  
Semi Arid

Water managers need map of irrigated areas (defined as the identification of their location and their areal extent) to plan a rational use of water under limited availability and to prevent the unauthorized withdrawals. Many authors have shown that the Earth Observation techniques are an effective tool for mapping irrigated areas worldwide at different spatial scales (global/regional/and local). This study presents a methodology for mapping irrigated areas in semi-arid environment based on Earth Observation techniques and by fully exploiting datasets freely available processed by open source software and tools. Data acquired with the Landsat 8 Operational Land Imager (OLI) and the new Sentinel 2A MultiSpectral Instrument (MSI) sensors were integrated to obtain cloud free dense time series allowing to monitor the vegetation development throughout the growing seasons. Irrigated areas were identified by analysing the growing patterns under water deficit conditions from NDVI values under the assumption that, in arid and semi-arid environment (like the Mediterranean Region), high trend of vegetation growth are compatible only with irrigation. The method was applied inside the Cixerri Consortium Irrigation District located in South of Sardinia (Italy).

scholarly journals Mapping irrigated areas using multi-sensor remote sensing data in a Mediterranean environment

2016 ◽  
Author(s):  
Pasquale Nino ◽  
Silvia Vanino ◽  
Flavio Lupia ◽  
Giuseppe Pulighe ◽  
Carlo De Michele ◽  
...  
Keyword(s):  
Spatial Scales ◽  
Remote Sensing Data ◽  
Arid Environment ◽  
Earth Observation ◽  
Irrigation District ◽  
Landsat 8 ◽  
Vegetation Development ◽  
Vegetation Growth ◽  
Growing Seasons ◽  
Semi Arid

Water managers need map of irrigated areas (defined as the identification of their location and their areal extent) to plan a rational use of water under limited availability and to prevent the unauthorized withdrawals. Many authors have shown that the Earth Observation techniques are an effective tool for mapping irrigated areas worldwide at different spatial scales (global/regional/and local). This study presents a methodology for mapping irrigated areas in semi-arid environment based on Earth Observation techniques and by fully exploiting datasets freely available processed by open source software and tools. Data acquired with the Landsat 8 Operational Land Imager (OLI) and the new Sentinel 2A MultiSpectral Instrument (MSI) sensors were integrated to obtain cloud free dense time series allowing to monitor the vegetation development throughout the growing seasons. Irrigated areas were identified by analysing the growing patterns under water deficit conditions from NDVI values under the assumption that, in arid and semi-arid environment (like the Mediterranean Region), high trend of vegetation growth are compatible only with irrigation. The method was applied in the Cixerri Consortium Irrigation District located in South of Sardinia (Italy).

scholarly journals Mapping irrigated areas using multi-sensor remote sensing data in a Mediterranean environment

2016 ◽  
Author(s):  
Pasquale Nino ◽  
Silvia Vanino ◽  
Flavio Lupia ◽  
Guido D'Urso ◽  
Carlo De Michele ◽  
...  
Keyword(s):  
Spatial Scales ◽  
Remote Sensing Data ◽  
Arid Environment ◽  
Earth Observation ◽  
Irrigation District ◽  
Landsat 8 ◽  
Vegetation Development ◽  
Vegetation Growth ◽  
Growing Seasons ◽  
Semi Arid

Water managers need map of irrigated areas (defined as the identification of their location and their areal extent) to plan a rational use of water under limited availability and to prevent the unauthorized withdrawals. Many authors have shown that the Earth Observation techniques are an effective tool for mapping irrigated areas worldwide at different spatial scales (global/regional/and local). This study presents a methodology for mapping irrigated areas in semi-arid environment based on Earth Observation techniques and by fully exploiting datasets freely available processed by open source software and tools. Data acquired with the Landsat 8 Operational Land Imager (OLI) and the new Sentinel 2A MultiSpectral Instrument (MSI) sensors were integrated to obtain cloud free dense time series allowing to monitor the vegetation development throughout the growing seasons. Irrigated areas were identified by analysing the growing patterns under water deficit conditions from NDVI values under the assumption that, in arid and semi-arid environment (like the Mediterranean Region), high trend of vegetation growth are compatible only with irrigation. The method was applied in the Cixerri Consortium Irrigation District located in South of Sardinia (Italy).

CASE STUDY: Evaluation of Different Cooling Systems in Lactating Heat-Stressed Dairy Cows in a Semi-Arid Environment

2007 ◽  
Vol 23 (5) ◽  
pp. 546-555 ◽  
Author(s):  
R. Burgos ◽  
L.J. Odens ◽  
R.J. Collier ◽  
L.H. Baumgard ◽  
M.J. VanBaale
Keyword(s):  
Dairy Cows ◽  
Arid Environment ◽  
Cooling Systems ◽  
Study Evaluation ◽  
Semi Arid

Glarner Waldwirtschaft im letzten Viertel des 20. Jahrhunderts | Glarner Forest Management in the last quarter of the 20th Century

2002 ◽  
Vol 153 (7) ◽  
pp. 249-250
Author(s):  
Fritz Marti
Keyword(s):  
Forest Management ◽  
20Th Century ◽  
Logical Consequence ◽  
Mountain Forest ◽  
Wood Production ◽  
Looking Back

Looking back on the last quarter of the 20th century, we see that the most striking changes in forest management have come about following large and frequent catastrophes. Management– concerned solely with wood production in former times – is oriented more towards retaining stability of the stands nowadays. In addition, the aspect of tending and improving the environment continues to gain ground. The growing gap between expenditure and profit is particularly acute in Glarner mountain forest areas. The extension of promotional silvicultural measures, which widely determines today's management, is to be seen as a logical consequence.

Waldentwicklung als Politikfeld. Das südwestliche Rheinland (Deutschland) im 18. Jahrhundert | Political dimension of forest development. Southwest Rhineland (Germany) in the 18th century

2001 ◽  
Vol 152 (12) ◽  
pp. 484-489
Author(s):  
Christoph Ernst
Keyword(s):  
18Th Century ◽  
Wood Production ◽  
Political Issue ◽  
Political Dimension ◽  
Mutual Dependence ◽  
New Knowledge ◽  
Different Types ◽  
Production Agriculture ◽  
Landed Gentry ◽  
Archive Material

Evaluation of archive material from southwest Rhineland, Germany,has provided new knowledge on the development of forests in the 18th century. The society of those times had three different main requirements, which called for three different types of forest; for wood production, agriculture and hunting. But both landed gentry and the community as a whole were interested in maximising the use of the forest. It is therefore not accurate to conclude that wood production was only in the interest of the landowners and agriculture in the interest of the rest of the community. In addition, the different types of forest were subject to mutual dependence because changing one parameter meant that the balance governing wood production,grazing and arable areas, as well as habitat for game,also shifted. These interests, both divergent and common, of the population as a whole lead to the conclusion that forestry development was a highly political issue, and that the influence of the non-owning part of the population was greater than previously thought.

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