Results 11 to 20 of about 708 (153)

Spatial-temporal Evolution of Carbon Storage and Spatial Autocorrelation Analysis in Zhengzhou City Based on InVEST-PLUS Model [PDF]

open access: yes, 2023
[Objective] One of the main drivers of terrestrial ecosystem carbon storage is land use change. The spatial-temporal response relationship between land use and carbon storage evolution in Zhengzhou City, Henan Province was analyzed based on the logic of “
Sun Yifan, Wang Xia, Xu Mengfei
core   +1 more source

子午岭地区植被演替的土壤碳汇效应

open access: yesShuitu Baochi Xuebao, 2022
为明确黄土高原地区植被长期恢复的土壤碳汇效应,采用时空互代的方法,研究子午岭地区150年以来8个植被演替序列的土壤有机碳含量及储量的变化特征,分析影响土壤有机碳储量变化的植被因素。结果表明:从农地演替到气候顶级辽东栎(Quercus wutaishanicaMary.)群落,土壤有机碳含量和储量明显增加,表现为演替前期(草本群落)快速增加,后期(乔木群落)趋向稳定的变化特征。剖面上来看,随着土层加深,土壤有机碳含量迅速减少。0—5 cm土层土壤有机碳含量与5—20,20—40 cm土层差异显著(P<0 ...
许小明   +7 more
doaj  

Evolution Characteristics of Soil and Water Conservation Carbon Pool and Its Carbon Sink Potential in Typical Small Watershed of the Loess Plateau [PDF]

open access: yes
[Objective] To investigate the evolution of soil carbon pool under catchment scale integrated soil and water conservation measures and evaluate the potential of soil and water conservation carbon sink. [Methods] Typical small watershed for soil and water
DONG Pengbei   +5 more
core   +1 more source

红树林湿地模型研究进展 [PDF]

open access: yes, 2019
红树林是位于海岸潮间带的森林湿地生态系统,具有抗风削浪、保护堤岸、封存CO2缓解全球气候变化等多种功能。然而,由于地理位置及生存环境特殊,红树林湿地模型的研究相对内陆湿地滞后。为了推动红树林模型的研究,本文将目前常见红树林湿地模型按功能划分为植被生长生产模型、水文模型、物流能流模型三类,以阐述相关模型研究的进展,并对目前红树林湿地模型研究提出几点看法:(1)现有红树林湿地模型在不同区域、尺度下运行的有效性有待进一步验证;(2)国内对红树林生态系统服务功能及植被恢复工作相关模型研究较少 ...
叶勇, 裘晟
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黄土高原坝地深层土壤有机碳稳定性研究

open access: yesShuitu Baochi Xuebao, 2022
淤地坝作为黄土高原重要的碳储库,其深层土壤有机碳稳定性在很大程度上影响坝地土壤储碳能力和碳排放。以黄土丘陵区不同利用年限的坝地为对象,从坝地剖面土壤有机碳含量及其组分入手,研究不同利用年限、不同沉积深度下,土壤有机碳含量及其稳定性的变化特征和影响因素。结果表明:(1)坝地深层土壤有机碳(SOC)含量低于该区坡耕地表层土壤有机碳含量,并未呈现明显的有机碳富集现象。随利用年限增加,坝地SOC含量呈增加趋势。(2)不同利用年限坝地的SOC、易氧化碳(EOC)、微生物量碳(MBC)、水溶性碳(DOC ...
周仕轩   +5 more
doaj  

Ionic‐Liquid‐Assisted Synthesis of NiTe/CoTe Heterostructure With Te Vacancies in N, P, and F Co‐Doped Hollow Carbon Nanorods for Efficient Alkaline Hydrogen Evolution and High‐Performance Flexible Supercapacitors

open access: yesRare Metals, EarlyView.
ABSTRACT Low conductivity, slow ion‐diffusion, and limited reactive sites are common problems in electrocatalysts and electrode materials. In this study, a complex NiTe–CoTe heterojunction with abundant Te vacancies embedded in N, P, and F co‐doped hollow carbon nanorods (NiTe1−x–CoTe1−x/NPFC) was fabricated via a simple ionic liquid‐assisted ...
Mingjie Yi   +7 more
wiley   +1 more source

Effects of Simulated Sea Level Rise on Storage and Origins of Sediment Organic Carbon and Decomposition of Fine Roots in Kandelia obovata Mangrove Ecosystem [PDF]

open access: yes, 2016
本研究以厦门曾营海岸三个不同高程样地的秋茄(Kandeliaobovata,以前学名为Kandeliacandel)红树林为研究对象。在模拟海平面上升80cm红树林(SLR80cm)、模拟海平面上升40cm红树林(SLR40cm)以及对照红树林(SLR0cm,相当于福建九龙江口红树林的滩面高程),探讨海平面上升对秋茄红树林生态系统地下部分有机碳过程的影响。 随海平面高度的增加,秋茄红树林底质有机碳和活性有机碳含量均逐渐增加;随着深度的增加,三块样地的底质有机碳含量、TN含量及C/N呈现逐渐减少的趋势 ...
黄莺莺
core  

Multiscale Study of a Synergistic System in Carbon‐Coated Multimetal‐Based Selenides Toward Rapid and Highly Stable Sodium Storage

open access: yesRare Metals, EarlyView.
ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu   +5 more
wiley   +1 more source

典型石漠化治理措施对土壤有机碳、氮及组分的影响

open access: yesShuitu Baochi Xuebao, 2020
以贵州关岭花江喀斯特峡谷花椒(HJ)、火龙果(HL)、花椒火龙果混交(HHL)、皇竹草(HZ)、苜蓿(MX)、圆柏(YB)、圆柏女贞混交(YBN)、撂荒地(LH)、坡耕地(PD)9种典型石漠化治理措施为研究对象,研究不同治理措施土壤剖面有机碳、全氮含量和储量、水溶性有机碳含量分布规律。结果表明:各治理措施0—20 cm土层土壤有机碳、全氮含量及储量、水溶性有机碳含量均随土壤剖面深度增加而降低,具有明显的表聚现象。其中土壤有机碳、全氮含量0—20 cm土层平均值大小顺序分别为YB > YBN > LH >
白义鑫   +3 more
doaj  

Storages and origins of sediment organic carbon in Kandelia candel mangroves at different restoration stages in Jiulongjiang Estuary [PDF]

open access: yes, 2012
在福建九龙江口(龙海市浮宫镇草埔头)选取12yr生(代表恢复早期)、24yr生(代表恢复中期)和48yr生(代表恢复晚期)人工秋茄(Kandeliacandel)红树林,分析植被发育对底质中有机碳的储量和来源的影响。主要结果如下: (1)不同恢复阶段秋茄红树林底质有机碳储量 底质有机碳和活性有机碳均随植被恢复进程而总体呈增加的趋势,底质l00cm深有机碳储量平均值为130.3~169.9t•hm-2,有机碳含量平均值为15.9~19.2g•kg-1,易氧化态碳(EOC ...
逄柏鹏
core  

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