کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7482690 | 1485262 | 2015 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Exploring the response of net primary productivity variations to urban expansion and climate change: A scenario analysis for Guangdong Province in China
ترجمه فارسی عنوان
بررسی واکنش تنوع اولیه بهره وری خالص به توسعه شهری و تغییرات آب و هوایی: تجزیه و تحلیل سناریو برای استان گوانگدونگ در چین
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کلمات کلیدی
توسعه شهری، تغییر آب و هوا، بهره وری اولیه، تجزیه و تحلیل سناریو،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Urban land development alters landscapes and carbon cycle, especially net primary productivity (NPP). Despite projections that NPP is often reduced by urbanization, little is known about NPP changes under future urban expansion and climate change conditions. In this paper, terrestrial NPP was calculated by using Biome-BGC model. However, this model does not explicitly address urban lands. Hence, we proposed a method of NPP-fraction to detect future urban NPP, assuming that the ratio of real NPP to potential NPP for urban cells remains constant for decades. Furthermore, NPP dynamics were explored by integrating the Biome-BGC and the cellular automata (CA), a widely used method for modeling urban growth. Consequently, urban expansion, climate change and their associated effects on the NPP were analyzed for the period of 2010-2039 using Guangdong Province in China as a case study. In addition, four scenarios were designed to reflect future conditions, namely baseline, climate change, urban expansion and comprehensive scenarios. Our analyses indicate that vegetation NPP in urban cells may increase (17.63Â gCÂ mâ2Â yearâ1-23.35Â gCÂ mâ2Â yearâ1) in the climate change scenario. However, future urban expansion may cause some NPP losses of 241.61Â gCÂ mâ2Â yearâ1, decupling the NPP increase of the climate change factor. Taking into account both climate change and urban expansion, vegetation NPP in urban area may decrease, minimally at a rate of 228.54Â gCÂ mâ2Â yearâ1 to 231.74Â gCÂ mâ2Â yearâ1. Nevertheless, they may account for an overall NPP increase of 0.78Â TgCÂ yearâ1 to 1.28Â TgCÂ yearâ1 in the whole province. All these show that the provincial NPP increase from climate change may offset the NPP decrease from urban expansion. Despite these results, it is of great significance to regulate reasonable expansion of urban lands to maintain carbon balance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 150, 1 March 2015, Pages 92-102
Journal: Journal of Environmental Management - Volume 150, 1 March 2015, Pages 92-102
نویسندگان
Fengsong Pei, Xia Li, Xiaoping Liu, Chunhua Lao, Gengrui Xia,