نتایج جستجو برای: karst region

تعداد نتایج: 542144  

Journal: :اکو هیدرولوژی 0
محمد رحمتی کارشناس ارشد مهندسی آبخیزداری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور حمید رضا مرادی دانشیار دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور حاجی کریمی دانشیار، دانشکدة کشاورزی، دانشگاه ایلام خلیل جلیلی دانشجوی دکتری مهندسی آبخیزداری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور

abstract one of the importance groundwater resources in kermanshah province is karstic aquifer. this study aimed to investigate the role of development of karstic aquifer in karst springs hydrological properties have been conducted. the studies areas are two karst aquifers include the bistoon-parau and patagh mountain in kermanshah province. in the bistoon-parau region we used of bistoon, berke...

Journal: :Zootaxa 2013
L Lee Grismer Perry L Wood Maketab Mohamed Kin Onn Chan Heather M Heinz Alex S-I Sumarli Jacob A Chan Ariel I Loredo

A new species of karst-adapted gekkonid lizard of the genus Cnemaspis Strauch is described from Gua Gunting and Gua Goyang in a karst region of Merapoh, Pahang, Peninsular Malaysia whose unique limestone formations are in immediate danger of being quarried. The new species differs from all other species of Cnemaspis based on its unique suite of morphological and color pattern characters. Its di...

Journal: :جغرافیا و توسعه ناحیه ای 0

extended abstract 1. introduction karst classification is carried out in order to better investigate karsts. it plays a fundamental role in distinguishing and recognizing them. today, the implementation of development projects without the appreciation of karst classification and recognition seems a difficult task. field studies, topographic maps, satellite images, aerial photographs and geologi...

Journal: :پژوهش های جغرافیای طبیعی 0
محمد صدیق قربانی استادیار گروه جغرافیا، دانشگاه پیام نور

introduction in several perspectives including geographical determinism, possibilism, exceptionalism, ecological and other views, it is discussed about understanding how human and the environment interact. human in dealing with different environments, depending on the capabilities of environment and existing tools and techniques, adopt themselves with the nature or interfere in it. karst landsc...

Ali Mirarabi, Alireza Kavousi, Hamid Kardan Moghadam Saman Javadi

Groundwater vulnerability assessment is of crucial importance for land use/cover management. Some methods have been proposed specifically for the karst hydrogeological settings. Among them, COP and PaPRIKa, as two commonly applied recent methods, were adopted for the resource vulnerability assessment of a humid temperate karst region, north of Iran. Comparison of water bacterial content and dis...

2013
Yuguo Liu Changcheng Liu Shijie Wang Ke Guo Jun Yang Xinshi Zhang Guoqing Li

Karst ecosystems are important landscape types that cover about 12% of the world's land area. The role of karst ecosystems in the global carbon cycle remains unclear, due to the lack of an appropriate method for determining the thickness of the solum, a representative sampling of the soil and data of organic carbon stocks at the ecosystem level. The karst region in southwestern China is the lar...

2017
Zhenxing Jia Hongfei Zang Xiuqing Zheng Yongxin Xu Marco Franchini

Due to climate change and human activities over the last fifty years, the spring flow volume of karst groundwater has sharply diminished in China. Climate change is one of the critical factors that initiates a series of karst hydrogeologic and water ecological environmental problems, because the precipitation shows a decreasing trend while the temperature shows an increasing trend. The Jinci Sp...

2011
B. Wang

Green plants play an important role in matter and energy transformations and are key messengers in the carbon and energy cycle. Vegetation net primary productivity (NPP) reflects the capability of plants to convert solar energy into photosynthate (fixed carbon). It can be used as a direct indicator of current status and future trend of ecological processes affected by human activities and clima...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم انسانی و اجتماعی 1387

چکیده ندارد.

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید