نتایج جستجو برای: land quality
تعداد نتایج: 860420 فیلتر نتایج به سال:
Many factors including climate, type of rootstock, soil properties, geological factors, plant nutrition and irrigation affect the quantity and quality of orange fruit. In this study, the relations between citrus orchards conditions, their soil properties and leaf elements concentration and fruit quality were evaluated. The experiment was conducted as a randomized complete block design and soil,...
Since the Land Administration Bureau was established in 1986, China has carried out the national land-use planning twice, of which the first was focused on "serving for social and economic development", and the second converted to “protecting arable land". At present a new round of land-use planning is ongoing (2005-2020), but the aims and requirements are even more and higher(Zheng Weiyuan,200...
BACKGROUND In the United States, most of the treated sewage sludge (biosolids) is applied to farmland as a soil amendment. Critics suggest that rules regulating sewage sludge treatment and land application may be insufficient to protect public health and the environment. Neighbors of land application sites report illness following land application events. OBJECTIVES We used qualitative resear...
• Effect of CO 2-isoprene interaction on air quality by year 2050 is simulated 17 • CO 2-isoprene interaction reduces ozone and aerosol sensitivity to climate 18 • Human land use change will become a key driver for future air quality 19 20 Abstract 21 The inhibition of biogenic isoprene emission by elevated CO 2 as observed in 22 many plant taxa may significantly alter the sensitivity of air qu...
Stormwater quality modeling results are subject to uncertainty. The variability of input parameters is an important source of overall model error. An in-depth understanding of the variability associated with input parameters can provide knowledge on the uncertainty associated with these parameters and can assist in uncertainty analysis of stormwater quality models and decision making based on m...
Land and its size are important as the most basic factors of production in agriculture .Fragmentation is one of the main problems that rice producers of Mazandaran province are confronted with. Non-efficiency in farm management, inability in effective using of agriculture technology and machinery, and low range productivity of production are all related to land fragmentation. In order to overco...
We present the first nationwide index of directly-measured land values by metropolitan area and investigate their relationship with housing prices. Construction prices and geographic and regulatory constraints are shown to increase the cost of housing relative to land. On average, approximately one-third of housing costs are due to land, with an increasing share in higher-value areas, implying ...
A study was conducted to determine suitable soil properties as soil quality indicators, using factor analysis in order to evaluate the effects of land use change on loessial hillslope soils of the Shastkola District in Golestan Province, northern Iran. To this end, forty surface soil (0-30 cm) samples were collected from four adjacent sites with the following land uses systems: (1) natural fore...
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