Conservation and restoration of river environment: an introduction
نویسندگان
چکیده
منابع مشابه
A paradigm for river conservation and restoration
769 Humans have long been fascinated by the dynamism of free-flowing waters. Yet we have expended great effort to tame rivers for transportation, water supply, flood control, agriculture, and power generation. It is now recognized that harnessing of streams and rivers comes at great cost: Many rivers no longer support socially valued native species or sustain healthy ecosystems that provide imp...
متن کاملRiver restoration: seeking ecological standards. Editor’s introduction
1. In the face of continuing anthropogenic stressors to freshwater systems worldwide , the natural resilience and resistance of the freshwater ecosystems that enables them to cope with or recover rapidly from certain levels of perturbation is under significant threat. In many systems, the changes brought about through human activities have significantly altered the physical habitat and ecologic...
متن کاملtechnical and legal parameters for determination of river boundary,( case study haraz river)
چکیده با توسعه شهر نشینی و دخل و تصرف غیر مجاز در حریم رودخانه ها خسارات زیادی به رودخانه و محیط زیست اطراف آن وارده می شود. در حال حاضر بر اساس آئین نامه اصلاح شده بستر و حریم رودخانه ها، حریم کمی رودخانه که بلافاصله پس از بستر قرار می گیرد از 1 تا20 متر از منتهی الیه طرفین بستر رودخانه تعیین، که مقدار دقیق آن در هر بازه از رودخانه مشخص نیست. در کشورهای دیگر روشهای متفاوتی من جمله: درصد ریسک...
15 صفحه اولDigital conservation: An introduction
In the last two decades, the World Wide Web and subsequent associated developments (e.g., widely available computers, broadband, Web 2.0, the Internet of Things) have shaped old and created new modes of business, management, communication and governance. The implications for modern societies are deemed so important that some sociologists dub the current era the Digital Age (e.g., Orton-Johnson ...
متن کاملRiver restoration
[1] River restoration is at the forefront of applied hydrologic science. However, many river restoration projects are conducted with minimal scientific context. We propose two themes around which a research agenda to advance the scientific basis for river restoration can be built. First, because natural variability is an inherent feature of all river systems, we hypothesize that restoration of ...
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ژورنال
عنوان ژورنال: Ecology and Civil Engineering
سال: 2003
ISSN: 1344-3755,1882-5974
DOI: 10.3825/ece.5.203