نتایج جستجو برای: haloxylon plantation area

تعداد نتایج: 590161  

2011
Pao-Shen Huang I-Min Tso Hui-Chen Lin Liang-Kong Lin Chung-Ping Lin

Pao-Shen Huang, Hui-Chen Lin, I-Min Tso, and Chung-Ping Lin (2011) Effects of thinning on spider diversity in an East Asian subtropical plantation forest. Zoological Studies 50(6): 705-717. Studies examining the effects of forest management on biodiversity in Asia are scarce and conducted mostly in temperate areas. In this study, the effects of the management on the biodiversity of a subtropica...

Aboulghasem Yousefi Leila Darvishi

Increasing urbanisation and industrialisation have led to a dramatic reduction in forest area, and now only culturally protected remnants of natural forests and some new plantations remain in most areas of the north of Iran. To investigate the status of the chemical and physical characteristics of soil under these remnant forests and assess the possible impacts of reforestation on soil properti...

2002
Robert C. Abt

Timber market analysis of the South’s predominantly private timberland finds that the 13 southern states produce nearly 60 percent of the nation’s timber, an increase from the mi dmi d1900s. Projections with the Subregional Timber Supply model show that, despite a 67 percent increase in the area of pine plantations, the South will experience a 2 percent decline in private timberland area as oth...

ژورنال: :تحقیقات مرتع و بیابان ایران 2009
نجاتعلی سالار

تاغکاری یکی از پروژه­های بزرگ بخش اجرا در امر تثبیت ماسه­های روان است. موفقیت پروژه تاغکاری در مناطق مختلف با توجه به شرایط اقلیمی و خاکی متفاوت است؛ بطوری که رشد درختچه­های تاغ در عرصه­های کشت شده کاملاً اختلاف معنی دار با یکدیگر دارند. به منظور پی بردن به عامل محدود کننده رشد در وسعتی حدود 2 هکتار مقادیر ارتفاع، تاج پوشش، قطر یقه و انشعابهای درختچه­های 5 ساله تاغ برای محاسبه شاخص رشد اندازه گی...

Aboulghasem Yousefi Leila Darvishi

Increasing urbanisation and industrialisation have led to a dramatic reduction in forest area, and now only culturally protected remnants of natural forests and some new plantations remain in most areas of the north of Iran. To investigate the status of the chemical and physical characteristics of soil under these remnant forests and assess the possible impacts of reforestation on soil properti...

Journal: :desert 2011
gh.r. zehtabian m. ghadimi j bakhshi m.a. zare chahouki

present research was conducted with the aim of determination of significant effect of soil properties on natural regeneration of haloxylon aphyllum and correlation coefficient and linear relation between soil variables and natural regeneration of haloxylon aphyllum. firstly, geomorphologic units were prepared in the areas under cultivation of haloxylon aphyllum in ardestan. two cultivated lands...

Journal: :E3S web of conferences 2021

Rising global temperatures in recent years have led to a sharp increase the area of desert areas. Desert areas are widely used as pastures. The productivity pastures Uzbekistan is very low, ie 1-3 ts/ha. This limits year-round use One resource-saving and long-term effective ways their plant enclosures, well reclamation forage rows these using plants such Haloxylon aphyllum , Calligonum caput-me...

2012
WenJun Zhang

Various viewpoints were proposed to explain the causes of recent years’ severe drought occurred in Yunnan and Guizhou, China. In general there are two parties of viewpoints, the Eucalyptus cause and climate change cause. I think Yunnan-Guizhou drought has been mainly caused by abnormal climate change. Eucalyptus was not significant in the formation of Yunnan-Guizhou drought. However, the forest...

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