首页|河南省生态系统有机碳储量的计量及空间分布

河南省生态系统有机碳储量的计量及空间分布

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
为了揭示土地利用变化对河南省有机碳储量的影响,探索陆地生态系统有机碳的增汇机制.基于GIS平台,采用InVEST模型,分析河南省1980-2000,2000-2020两个时期内土地利用变化及因其引起的生态系统有机碳储量变化.结果表明:两个时期内,河南省农田面积分别减少了 1.25 × 104 hm2和 4.45× 105 hm2,草地面积减少了 7.73× 104 hm2 和 6.04× 104 hm2,森林面积增加了 1.08 × 104 hm2和 1.25× 104 hm2,建筑用地增加了 1.46×105 hm2 和 4.41×105 hm2.1980-2020 年间全省有 1.91× 106 hm2的土地利用类别发生了变化,从1980年到2000年,河南省有机碳储量增加了 2.61 × 106 t.从2000年到2020年,有机碳储量减少了约7.00×106 t.1980～2020年,土地利用变化促进了河南省有机碳储量的积累.即使林地面积在不断增长,但是有机碳储量仍呈现出减少的趋势.主要是林地面积增长带来的有机碳储量的增加不足以抵消耕地、草地面积的大量减少导致的有机碳储量流失.为了增加有机碳积累,减少由于土地利用变化导致的碳储量流失,保护林地面积具有十分积极的意义.林地面积的增加对于生态系统有机碳储量的提升发挥着重要作用.在全球变暖压力越来越大的情况下,土地利用的有效规划带来的碳汇效果对于中国未来的城市发展愈加重要.
Measurement and Spatial Distribution of Organic Carbon Stocks in Henan Ecosystems
In order to reveal the influence of land use change on organic carbon stock in Henan Prov-ince and explore the mechanism of organic carbon increase and sink in terrestrial ecosystems,the land use changes and the changes of ecosystem organic carbon stocks caused by them in Henan Province during the two periods of 1980-2000 and 2000-2020 were analyzed applying GIS platform and the InVEST model.The results showed that the area of agricultural land in Henan Province decreased in the two periods by 1.25 × 104 hm2 and 4.45 × 105 hm2,the area of grassland decreased by 7.73 × 104 hm2 and 6.04 × 104 hm2,the area of forest increased by 1.08 × 104 hm2 and 1.25 × 104 hm2,and the ar-ea of construction land increased by 1.46× 105 hm2 and 4.41X105 hm2,in the two periods respective-ly.During the period of 1980-2020,total 1.91×106 hm2 of land use in the province has changed.From 1980 to 2000,organic carbon stocks in Henan Province increased by 2.61X106 t,and from 2000 to 2020,however,organic carbon stocks decreased by about 7.00× 106 t.From1980 to 2020,the land use change promoted the accumulation of organic carbon stock in Henan Province.Even though the forest land area has increased,the organic carbon stock still showed a decreasing trend,which is be-cause the increase of organic carbon stock through the increase of forest land area is not enough to off-set the loss of organic carbon stock due to the large decrease of cultivated land and grassland area.In order to increase organic carbon accumulation and reduce the loss of carbon stocks caused by land use change,it is very positive to protect the forest area.The increase of forestland plays an important role in the enhancement of organic carbon stock in the ecosystem.Under the increasing pressure of global warming,the carbon sink effect brought by effective land use planning is more and more important for the future urban development in China.

Land useInVEST modelecosystemcarbon stockchangeHenan Province

胡国宝、乔栋、张楚磊、李晓林、田耀武

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河南科技大学 园艺与植物保护学院,河南洛阳 471000

土地利用 InVEST模型 生态系统 碳储量 变化 河南省

国家自然科学基金

32271848

2023

10.3969/j.issn.1001-2117.2023.04.013

陕西林业科技
陕西省林学会 西北农林科技大学 陕西省林业研究中心

陕西林业科技

影响因子：0.252
ISSN：1001-2117
年,卷(期)：2023.51(4)
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