کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5742482 1617691 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessing the spatiotemporal dynamic of global grassland carbon use efficiency in response to climate change from 2000 to 2013
ترجمه فارسی عنوان
ارزیابی پویایی فضایی زمانی از بازده کربن علف های هرز جهانی در پاسخ به تغییرات اقلیمی از سال 2000 تا 2013
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی


- CUE was used to measure how efficiently a grassland sequesters atmospheric carbon.
- The global grassland CUE exhibited a slightly increasing trend from 2000 to 2013.
- The highest and lowest average annual CUE was in the open shrublands and savannas.
- Increased temperature lowered the grassland CUE, increased precipitation raised CUE.

The carbon use efficiency (CUE) of grassland, a ratio of net primary production (NPP) to gross primary productivity (GPP), is an important index representing the capacity of plants to transfer carbon from the atmosphere to terrestrial biomass. In this study, we used the Moderate Resolution Imaging Spectroradiometer (MODIS) data to calculate the global grassland CUE, and explore the spatiotemporal dynamic of global grassland CUE from 2000 to 2013 to discuss the response to climate variations. The results showed that the average annual CUE of different grassland types follows an order of: open shrublands > non-woody grasslands > closed shrublands > woody savannas > savannas. The higher grassland CUE mainly occurred in the regions with cold and dry climate. By contrast, the regions with the lower grassland CUE were mostly in warm and wet environments. Moreover, the CUE exhibited a globally positive correlation with precipitation and a negative correlation with temperature. Therefore, the grassland CUE has considerable spatial variation associated with grassland type, geographical location and climate change.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Oecologica - Volume 81, May 2017, Pages 22-31
نویسندگان
, , , , , , ,