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湖南省森林生态系统碳储量、碳密度及其空间分

#br# 刘曦乔1,4,梁萌杰5,陈龙池1,3,汪思龙1,3*,郑文辉1,4,余鑫1,4,李仁山1,4,张广杰1,4,王福生2,杨海军2#br#   

  1. (1中国科学院沈阳应用生态研究所会同森林生态实验站, 沈阳 110016; 2湖南省林业调查规划设计院, 长沙 410007; 3湖南会同森林生态系统国家野外科学观测研究站, 会同 418307; 4中国科学院大学, 北京 100049; 5北京中咨海外咨询有限公司, 北京 100048)
  • 出版日期:2017-09-10 发布日期:2017-09-10

Carbon storage, carbon density and spatial distribution of forest ecosystems in Hunan Province.

LIU Xi-qiao1,4, LIANG Meng-jie5, CHEN Long-chi1,3, WANG Si-long1,3*, ZHENG Wen-hui1,4, YU Xin1,4, LI Ren-shan1,4, ZHANG Guang-jie1,4, WANG Fu-sheng2, YANG Hai-jun2#br#   

  1. (1Huitong Experimental Station of Forest Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; 2Hunan Institute of Forest Inventory and Planning, Changsha 410007, China; 3Huitong National Research Station of Forest Ecosystem, Huitong 418307, China; 4University of Chinese Academy of Sciences, Beijing 100049, China; 5China International Engineering Consulting Corporation, Beijing 100048, China).
  • Online:2017-09-10 Published:2017-09-10

摘要: 本研究在湖南省野外样地调查的基础上,结合湖南省2014年森林资源二类调查结果,计算出湖南省森林生态系统碳储量的空间分布格局。结果表明:湖南省森林生态系统的平均碳密度为130.69 t·hm-2。其中,乔木层、灌木层、草本层、凋落物层和土壤的碳密度分别为28.36、1.77、0.90、1.36和98.30 t·hm-2。植被碳密度与土壤碳密度呈显著正相关关系。土壤碳密度与凋落物层碳密度呈显著正相关关系。阔叶林碳密度最大(175.26 t·hm-2),其后依次为杉木林(136.81 t·hm-2)、马尾松林(133.84 t·hm-2)、柏木林(124.88 t·hm-2)、竹林(117.29 t·hm-2)、杨树林(95.08 t·hm-2)、经济林(80.94 t·hm-2)、湿地松林(64.71 t·hm-2)、灌木林(63.73 t·hm-2)。湖南省森林生态系统总碳储量为1572.02 Tg C,其中,乔木层、灌木层、草本层、凋落物层和土壤的碳储量分别为341.18、21.29、10.78、16.36、1182.38 Tg C。阔叶林碳储量最大(545.77 Tg C),依次为杉木林(419.91 Tg C)、马尾松林(275.58 Tg C),竹林(127.76 Tg C)、灌木林(74.44 Tg C)、经济林(71.25 Tg C)、柏木林(25.81 Tg C)、湿地松林(22.39 Tg C)、杨树林(9.11 Tg C)。在各市州中,怀化市森林生态系统碳储量最大,为267.43 Tg C;湘潭市最少,为28.12 Tg C。湖南省森林生态系统碳储量分布不均,表现为湘西南>湘南>湘北>湘中。阔叶林、杉木林和马尾松林是湖南省森林生态系统碳储量的主要贡献者,分别占34.72%、26.71%、17.53%。

关键词: 生态系统服务价值, 绿地系统, 沈阳, 时空变化

Abstract: Based on the field investigation and forest resource inventory in 2014, we estimated carbon density, carbon storage and their spatial distribution of forest ecosystems in Hunan Pro-vince. The results showed that the average carbon density of forest ecosystems in Hunan Province was 130.69 t·hm-2, of which 28.36, 1.77, 0.90, 1.36 and 98.30 t·hm-2 were in trees, shrubs, herbs, litter, and soil, respectively. Carbon density of vegetation layer and litter layer were positively correlated with that of soil, and the carbon densities of different forest types were found in the following decreasing sequence: broadleaved forest (175.26 t·hm-2) > Chinese fir forest (136.81 t·hm-2) > masson pine forest (133.84 t·hm-2) > Cupressus funebris forest (124.88 t·hm-2) > bamboo forest (117.29 t·hm-2) > poplar forest (95.08 t·hm-2) > economic forest (80.94 t·hm-2) > slash pine plantation (64.71 t·hm-2) > shrub (63.73 t·hm-2). The total carbon storage was 1572.02 Tg C in the forest ecosystems in Hunan Province, of which 341.18, 21.29, 10.78, 16.36, 1182.38 Tg C were in trees, shrubs, herbs, litter, and so il, respectively. The carbon storages of different forest types were found in the following decreasing sequence: broadleaved forest (545.77 Tg C) > Chinese fir forest (419.91 Tg C) > masson pine forest (275.58 Tg C) > bamboo forest (127.76 Tg C) > shrub (74.44 Tg C) > economic forest (71.25 Tg C) > Cupressus funebris forest (25.81 Tg C) > slash pine plantation (22.39 Tg C) > poplar forest (9.11 Tg C). Among 14 cities at prefecture scale, the highest carbon storage (267.43 Tg C) in the forest ecosystem was found in Huaihua, while the lowest (28.12 Tg C) was found in Xiangtan. Spatial distribution of carbon storage was ranked as the order of southwestern Hunan > southern Hunan > northern Hunan > central Hunan. Broadleaved forest, Chinese fir forest, and masson pine forest acted as the main contributor in carbon storage of the forest ecosystems in Hunan Province, accounting for 34.72%, 26.71%, and 17.53%, respectively.

Key words: spatio-temporal dynamics, ecosystem service value, green space system, Shenyang