کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6543914 | 159212 | 2013 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Uncertainty in below-ground carbon biomass for major land covers in Southeast Asia
ترجمه فارسی عنوان
عدم اطمینان در زیست توده کربن زیر زمین برای پوشش بزرگ زمین در جنوب شرقی آسیا
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
Owing to difficulties associated with measuring root biomass accurately in space and time, below-ground root biomass is often calculated indirectly from above-ground biomass measurements via general allometric equations. Of concern is that general equations may not provide accurate site-specific calculations for accurate carbon stock assessments. This review comparing more than 100 root-related studies conducted in SE Asia shows highly variable and uncertain below-ground woody carbon (BGC) biomass estimates for many vegetation types associated with on-going land-use changes throughout the region. Most BGC data exist for Indonesia, Malaysia, and Thailand; only a few studies have been conducted for Brunei, Cambodia, Lao PDR, Myanmar, Papua New Guinea, Philippines, Singapore, Timor Leste and Vietnam. While substantial data exist for a variety of forests and timber-plantations, little work has focused on key transition land-covers including rubber, oil palm, swidden fallows, agroforests, grasslands, and croplands. Mangroves (12-219Â Mg C haâ1), peat forests (11-71Â Mg C ha-1) and other forest types (11-74Â Mg C ha-1) have the highest BGC values. The limited data for rubber plantations (5-32Â Mg C ha-1), oil palm plantations (4-22Â Mg C ha-1), swidden fallows (3-16Â Mg C haâ1), and non-swidden agroforestry (3-16Â Mg C haâ1) indicate modest differences in the amount of BGC for several land covers that are at the heart of ongoing debates regarding the human and environmental impacts of agricultural intensification. The paucity of data currently in existence for the region highlights the need for additional field investigations-following accepted protocols-of root biomass to facilitate efforts to improve carbon stock estimates. Government agencies, private enterprises, and development agencies could help lead the way in developing a better forest carbon database by teaming with researchers to assess total ecosystem carbon stocks prior to vegetation being removed for construction, mining, or stand rotations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forest Ecology and Management - Volume 310, 15 December 2013, Pages 915-926
Journal: Forest Ecology and Management - Volume 310, 15 December 2013, Pages 915-926
نویسندگان
Jia Qi Yuen, Alan D. Ziegler, Edward L. Webb, Casey M. Ryan,