• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Meeting of IHSS >DECOMPOSITION OF SOIL CARBON DERIVED FROM FOREST IN AN ULTISOL UNDER SUGAR CANE OR Brachiarla sp.IN THE ATLANTIC FOREST REGION OF BRAZIL
【24h】

DECOMPOSITION OF SOIL CARBON DERIVED FROM FOREST IN AN ULTISOL UNDER SUGAR CANE OR Brachiarla sp.IN THE ATLANTIC FOREST REGION OF BRAZIL

机译：在甘蔗或Brachiarla sp中的ultisol源自森林中的土壤碳分解。在巴西大西洋森林地区

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In many areas of the coastal Atlantic forest of Brazil,large areas of the original forest have been replaced by graminaceous species such as Brachiaria or sugar cane.Old-growth forests of both temperate and tropical regions consist predominantly of species of the C_3 photosynthetic pathway and show a ~(13)C abundance of approximately-26 to-28 per thousand.With the substitution of the forest vegetation by graminaceous C_4 crops(which have a higher ~(13)C natural abundance;-13 to-10 per thousand)it is possible from the analysis of total carbon and its isotopic abundance to separately estimate the rate of decomposition of the soil C derived from the original forest vegetation and the rate of accumulation of C derived from the subsequent C_4 crop.This study was performed to study these changes in soil carbon fractions in a cronosequence of remaining forest,and Brachiaria and sugarcane installed 22 years before sampling at a site in Conceicao da Barra(North of the state of Espirito Santo).
机译：在巴西沿海大西洋森林的许多地区，原有的森林的大面积已被血糖种类所取代，如Brachiaria或甘蔗。温度和热带地区的增长林，主要由C_3光合途径的物种组成。显示大约26至280％的〜（13）C丰度。通过综素C_4作物替代森林植被（具有更高的〜（13）天然丰富; -13至-10‰）可以从分析总碳及其同位素丰富的分析，分别估计来自原始森林植被的土壤C的分解率和来自随后的C_4作物的C的积累速率。本研究进行了研究在剩下的森林的铬雌片段中的土壤碳级分，以及22年在康塞岛达巴拉（Espirito Santo）的网站上的22年之前安装了22年的Brachiaria和Sugarcane。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号