泉州湾河口湿地碳贮量及分布格局

发布时间：2018-01-19 09:40

本文关键词： 泉州湾河口湿地生物量碳含量碳密度碳贮量　出处：《中国林业科学研究院》2015年硕士论文　论文类型：学位论文

【摘要】：泉州湾河口湿地是我国亚热带河口湿地的典型代表,是桐花树在太平洋西岸天然分布的北界。近年来,随着经济建设的高速发展,泉州城市规模的不断扩大,许多建设项目经过紧邻城区的泉州湾河口湿地,其生物多样性受到一定威胁。本论文采用卫星遥感技术与标准地调查相结合的研究方法,研究了泉州湾河口湿地主要植物群落生态系统的生物量、碳含量、碳密度、碳贮量及其分布规律,为正确评价泉州湾河口湿地碳循环特点、碳汇贡献等提供基础数据资料。主要研究结论如下:(1)泉州湾河口湿地主要植物群落的植物生物量与碳密度的分布规律基本一致,其大小顺序均为秋茄群落秋茄-桐花树群落桐花树群落互花米草群落,且所有群落的生物量与碳密度均为地上部分地下部分;根据植物不同组成部位划分,秋茄群落、秋茄-桐花树群落生物量与碳密度的大小顺序均是树干树枝树叶主根侧根,桐花树群落的生物量与碳密度均为树干树枝主根树叶侧根。(2)植物群落碳含量的高低顺序是桐花树群落(42.33±2.22%)秋茄-桐花树群落(42.27±3.23%)秋茄群落(42.04±3.27%)互花米草群落(39.14±1.74%);根据植物不同组成部位划分,秋茄群落的高低顺序是树干树枝树叶主根侧根,桐花树群落为主根树干树枝树叶侧根,秋茄-桐花树群落则是树干树叶树枝主根侧根,互花米草群落为地上部分地下部分。(3)0-30cm土层的土壤碳含量:互花米草群落的最高,为1.20±0.34%,分别是秋茄-桐花树群落、桐花树群落、裸滩、秋茄群落的116.50%、122.45%、123.71%、125.00%;按照低、中、高潮位划分,秋茄群落的高低顺序是低潮位中潮位高潮位,桐花树群落、秋茄-桐花树群落均是低潮位高潮位中潮位,互花米草群落为高潮位低潮位中潮位,裸滩则是高潮位中潮位低潮位。(4)0-30cm土层的土壤碳密度:裸滩的最大,为28.31t/hm2,分别是互花米草群落、秋茄-桐花树群落、桐花树群落、秋茄群落的102.65%、114.11%、126.78%、133.54%;按照低、中、高潮位划分,红树林群落的大小顺序均是低潮位高潮位中潮位,互花米草群落和裸滩均为高潮位中潮位低潮位。(5)研究区域内湿地生态系统的总面积为6846.71hm2,其碳贮量约为202.52kt。其中,0-30cm土层的土壤碳贮量为191.61 kt,占94.61%,主要植物群落的植物碳贮量为10.91 kt,占5.39%。不同生态系统的碳贮量受面积影响较大,其大小顺序为河口水域潮间带裸滩红树林群落互花米草群落水产鱼塘,分别占总碳贮量的55.28%、29.49%、7.76%、6.65%和0.82%。
[Abstract]:Quanzhou Bay estuary wetland is a typical representative of China's subtropical estuary wetland, is the natural distribution of Paulownia trees in the West Bank of the Pacific Ocean north boundary. In recent years, with the rapid development of economic construction, Quanzhou city scale continues to expand. Many construction projects pass through Quanzhou Bay estuary wetland, which is close to the urban area, and its biodiversity is threatened to some extent. In this paper, satellite remote sensing technology combined with standard survey method is adopted. The biomass, carbon content, carbon density, carbon storage and its distribution of the main plant community ecosystem in Quanzhou Bay estuary wetland were studied in order to evaluate correctly the characteristics of carbon cycle in Quanzhou Bay estuary wetland. The main conclusions are as follows: 1) the distribution of plant biomass and carbon density of the main plant communities in Quanzhou Bay estuary wetland is basically consistent with that of carbon density. The order of size and size of all communities was autumn-tung flower community, and the biomass and carbon density of all communities were aboveground part and underground part. According to the different parts of the plant, the order of biomass and carbon density of the community of autumnica and Paulownia was the main root of tree branch and leaf. The order of carbon content of the plant community is 42.33 卤2.22). 42.27 卤3.23) Spartina alternata community 42.04 卤3.27) Spartina alternata community 39.14 卤1.74; According to the different parts of the plant, the order of the community of autumn tomato is the main root of the trunk branch, the main root of the tree branch, and the lateral root of the tree branch of the tree tree community. The community of autumn-tree is the main root of tree trunk leaves, and the community of Spartina alterniflora is the soil carbon content of the underground part of the aboveground part. The soil carbon content of the soil layer is 0-30 cm: the highest of the community of Spartina alterniflora. It was 1. 20 卤0. 34. It was 116.50, 122.45, 123.71 and 125.00, respectively, in the community of autumn-tung flower, paulownia, bare flat and autumnica. According to the classification of low, middle and high tidal levels, the order of autumn eggplant community is low tidal level, high tide level, Tong flower tree community, and autumn-tung flower tree community are all low tide and high tide level. The soil carbon density of Spartina alterniflora community was the highest (28.31t / hm ~ 2) in the soil layer of 0-30cm soil layer at the low tide level at the high tide level, and the bare beach was the soil carbon density at the low tide level at the high tide level. They are the Spartina alterniflora community, the autumn-tree community, the paulownia community, and the 102.65cm area of the autumn eggplant community, which are about 126.78 and 133.54, respectively. According to the classification of low, middle and high tidal levels, the order of mangrove community size is low tide level, high tide level and middle tide level. The total area of wetland ecosystem in the study area is 6846.71hm2, and its carbon storage is about 202.52 kt. The soil carbon storage in 0-30 cm soil layer was 191.61 kt, accounting for 94.61 kt, and the plant carbon storage in the main plant community was 10.91 kt. The carbon storage of different ecosystems was influenced by the area, and the order of carbon storage was in the order of intertidal mangrove community in estuarine waters, Spartina alterniflora community and aquatic fish pond. 55.28% of the total carbon storage was 6.65% and 0.82%, respectively.
【学位授予单位】：中国林业科学研究院
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X171.1

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