CN102156107A - 一种草型湖泊碳通量监测的技术 - Google Patents

一种草型湖泊碳通量监测的技术 Download PDF

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CN102156107A
CN102156107A CN 201110029250 CN201110029250A CN102156107A CN 102156107 A CN102156107 A CN 102156107A CN 201110029250 CN201110029250 CN 201110029250 CN 201110029250 A CN201110029250 A CN 201110029250A CN 102156107 A CN102156107 A CN 102156107A
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data
technology
lake
monitoring
carbon
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董伟
舒俭民
何萍
蓝艳
苏德
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Chinese Research Academy of Environmental Sciences
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Chinese Research Academy of Environmental Sciences
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Abstract

本发明的目的在于解决草型湖泊碳循环监测数据的不连续性和准确性的问题,提供了一种改善数据获取的技术和方法。Li8100是在试验现场测得数据并加以记录的先进的仪器,但是其受条件的制约不能用于湖泊的碳通量监测,该发明就是利用改造的静态箱使得Li8100可以用于湖泊碳通量的监测,较之于传统的静态箱/气象色谱仪的方法,该发明使得数据的连续性和准确性大大提高,更利于后期的数据的分析。该发明利用我国现有资源,就地取材,简便可行,具有较强的可操作性和广泛的应用性,技术的实施不影响湖泊生态***原有生态功能,对长期维护草型湖泊生态健康具有重要意义。

Description

一种草型湖泊碳通量监测的技术
技术领域
本发明属于环境生态学领域,具体涉及一种使用改进的静态箱监测碳通量的技术与方法,能够有效的提高湖泊碳通量监测数据的连续性和准确性。
背景技术
作为水体生态***的一部分——湖泊生态***虽然其面积远小于海洋,但因其位于内陆,与陆地生态***的物质、能量、信息交换强烈,且湖泊生态***生产力很高,对气候的波动特别敏感,并具有较高沉积速率,能真实地纪录湖区在较长的地质历史时期各种气候和其他环境变化的信息,是环境变化的良好记录器,所以湖泊一直为全球变化研究的重要对象。
据初步研究,全球湖泊对大气CO2的贡献达每年1.4×1014g的C,这个量相当于由陆地江河向海洋输入有机碳和无机碳总和的一半,其影响虽小,但不可忽略。特别是50-60年代以来,湖泊富营养化问题越来越突出,湖泊对大气汇的作用越来越明显,研究湖泊水-气界面的CO2通量不仅对C循环规律的研究具有非常重要的作用,而且对研究湖泊富营养化也具有一定的意义。
当前,国内外广泛应用静态箱/气象色谱仪法,此方法最大的缺点在于样品的采集与检测时间间隔太长,难免会出现样品的泄露与被污染,造成数据的准确性大大降低,且样品的时间序列难以保证。
发明内容
本发明的目的在于公布一种利用改造型的静态箱/用于监测通量的Li8100的监测技术与方法。通过改善静态箱的局部环境,使用于监测通量的Li8100这个仪器可以在湖面上进行监测,这样实现数据的连续监测与实时记录。大大降低数据采集与检测的距离与时间,使数据更加的精确。
本发明的特征在于:Li8100以前是用于监测土壤的碳通量的仪器,其具有连续监测与实时记录的优点,本发明是将传统的静态箱进行改造,使Li8100用于湖泊水-气界面碳通量的监测,同时数据的连续性可以得到保障,这样可以辅以其它回归分析软件对数据进行回归分析,得到碳通量曲线,最后通过模型计算出碳通量数值。且不影响湖泊原有生态功能,可应用于不同区域的草型湖泊。
本发明与以往的静态箱/气象色谱仪技术相比,其益处在于:本发明可以大大降低野外监测的人力与物力,传统方法需要大概一队不少于6人的小组昼夜不停监测,本发明只需要两人对其进行日常维护即可,且数据的采集与检测完全自动完成,没有了人为误差,重要的是在恶劣天气下仍然能进行监测,不会对湿地生态***造成二次污染,为我国环境保护和生态建设提供了一种新的方法。
附图说明
图1为本发明的改进的静态箱示意图
图2为拟合后的碳通量曲线图
其中:1、Li8100  2、观察室  3、管子  4、隔板
5、静态箱
具体实施方式
以下详细说明本发明的原理和实施方式:
开展实地调研,考察该区域的水体污染程度、沼泽化程度,在沼泽化与非沼泽化水域应用该技术。
将6个静态箱分别放于沼泽化与非沼泽化水域,各种水域放3个,每个静态箱隔板要紧贴水面。在上午九点同时开始进行监测,设置监测次数为144次,每半小时进行一次采样,每次采样时间是2分钟,每24小时对仪器进行维护,每周进行一次监测,检测周期为一年。一方面,由于碳通量与温度密切相关,监测密度不宜过小。另一方面,每周三天的监测数据足以代表该区域温度的变化。将得到的数据输入计算机,再将每种水域的3个平行样本在每个时段得到的数据进行平均值计算,通过回归软件得到碳通量曲线图,最后通过定积分计算得出碳通量。
实施例1
针对白洋淀某水域,利用本发明作为碳通量监测技术,对该淀域的碳通量进行连续监测。该水域分为沼泽化区域与费沼泽化区域。每个区域分为三个平行样,共六组静态箱进行观测。于3-11月水面未结冰时使用该技术。最终通过定积分计算得到该水域每年向大气释放8.86t的碳。

Claims (4)

1.一种监测草型湖泊区域碳循环技术,其特征在于:应用于以大型水生植物为主要表征的草型湖泊,利用静态箱的连续监测功能,通过模型计算方法得到草型湖泊区域碳循环数值。
2.如权利要求1所述的草型湖泊碳循环监测技术,其特征在于:将测量土壤碳通量的Li8100引入湖泊碳循环监测领域,使得数据的连续性大大增强,便于获取多个数据使数据更加具有分析性。
3.如权利要求1所述的草型湖泊碳循环监测技术,其特征在于:以监测湖面碳通量为核心,将得到的数据进行线性回归分析,到处碳通量曲线,最后通过定积分计算得出碳通量。这样就做到数据的全面性及准确性。
4.如权利要求1所述的草型湖泊碳循环监测技术,其特征在于:对控制区域的生态特征参数进行长期监测,维护湖泊生态***的生态健康,确保***的功能和稳定性。
CN 201110029250 2011-01-27 2011-01-27 一种草型湖泊碳通量监测的技术 Pending CN102156107A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102507906A (zh) * 2011-11-15 2012-06-20 莫路锋 一种基于大范围土壤碳通量监测***的wsn森林环境效益监测***
CN103616496A (zh) * 2013-12-19 2014-03-05 江苏大学 一种测定滩涂湿地早晚潮间期土壤co2通量的方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
《亚热带资源与环境学报》 20100930 杜紫贤等 城市沿江芦苇湿地土壤呼吸动态及影响因子分析 第50页第2段,第1.1-1.2节 1-4 第5卷, 第3期 *
《生态学杂志》 20021231 李兆富等 湿地土壤CO2通量研究进展 第23,47-50页 1-4 第21卷, 第6期 *
《第二届中国林业学术大会--S10 林业与气候变化论文集》 20091231 唐洁等 洞庭湖区滩地不同土地利用类型的土壤呼吸动态 第73-77页 1-4 , *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102507906A (zh) * 2011-11-15 2012-06-20 莫路锋 一种基于大范围土壤碳通量监测***的wsn森林环境效益监测***
CN103616496A (zh) * 2013-12-19 2014-03-05 江苏大学 一种测定滩涂湿地早晚潮间期土壤co2通量的方法
CN103616496B (zh) * 2013-12-19 2015-04-22 江苏大学 一种测定滩涂湿地早晚潮间期土壤co2通量的方法

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Application publication date: 20110817