Carbon storage in a wolfberry plantation chronosequence established on a secondary saline land in an arid irrigated area of Gansu Province, China
Carbon storage in a wolfberry plantation chronosequence established on a secondary saline land in an arid irrigated area of Gansu Province, China
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中国甘肃省干旱灌区次生盐碱地上枸杞种植园的碳储量
DOI：
10.1007/s40333-018-0053-7
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发表时间：
2018-03
影响因子：
3
通讯作者：
Milne Eleanor
中科院分区：
文献类型：
--
作者：
Ma Quanlin;Wang Yaolin;Li Yinke;Sun Tao;Milne Eleanor
碳(C)储存因其与农业安全和气候变化的相关性而受到极大关注。植树造林可以增加陆地生态系统的碳储量，已被认为是抵消二氧化碳排放的重要措施。为了分析种植枸杞的碳素效益，研究了枸杞的碳素效益。在干旱次生盐碱地上，以甘肃省景泰县为例，研究了在次生盐碱地上建立的不同树龄(4年生、7年生和11年生)的枸杞人工林的生物量碳(BC)储量和土壤有机碳(SOC)储量的动态，以及枸杞人工林对植物-土壤系统碳储量的影响。并对甘肃省枸杞种植园的碳汇及其潜力进行了评价。选择一片完整的次生盐碱地作为对照。结果表明，种植枸杞能显著降低次生盐碱地的土壤盐分，显著增加土壤中的碳库、有机碳和凋落物碳库，尤其是在种植后的前4年。原状次生盐碱地(对照)的地上和地下BC贮量分别仅为枸杞人工林的1.0%和1.2%。与原状次生盐碱地相比，4年生、7年生和11年生的枸杞林土壤有机碳储量分别增加了36.4%、37.3%和43.3%，占生态系统碳储量的92%以上。0~11年生枸杞人工林的平均碳汇速率为0.73 mg C/(hm2.a)，有机碳固存速率为3.30 mg C/(hm2.a)。7年生和11年生的枸杞人工林的BC和SOC贮量没有显著差异，这可能部分是由于新枝和果实中大量的C流失所致。2013年甘肃省枸杞林碳储量已达3.574 Tg，现有的枸杞林固碳潜力为0.134 Tg C/a，说明种植枸杞是恢复干旱地区退化盐碱地、提高农用地固碳能力的理想农业模式。
Carbon (C) storage has received significant attention for its relevance to agricultural security and climate change. Afforestation can increase C storage in terrestrial ecosystems, and has been recognized as an important measure to offset CO2emissions. In order to analyze the C benefits of planting wolfberry (Lycium barbarumL.) on the secondary saline lands in arid areas, we conducted a case study on the dynamics of biomass carbon (BC) storage and soil organic carbon (SOC) storage in different-aged wolfberry plantations (4-, 7- and 11-year-old) established on a secondary saline land as well as on the influence of wolfberry plantations on C storage in the plant-soil system in an arid irrigated area (Jingtai County) of Gansu Province, China. The C sequestration and its potential in the wolfberry plantations of Gansu Province were also evaluated. An intact secondary saline land was selected as control. Results show that wolfberry planting could decrease soil salinity, and increase BC, SOC and litter C storage of the secondary saline land significantly, especially in the first 4 years after planting. The aboveground and belowground BC storage values in the intact secondary saline land (control) accounted for only 1.0% and 1.2% of those in the wolfberry plantations, respectively. Compared to the intact secondary saline land, the SOC storage values in the 4-, 7- and 11-year-old wolfberry plantations increased by 36.4%, 37.3% and 43.3%, respectively, and the SOC storage in the wolfberry plantations occupied more than 92% of the ecosystem C storage. The average BC and SOC sequestration rates of the wolfberry plantations for the age group of 0–11 years were 0.73 and 3.30 Mg C/(hm2•a), respectively. There were no significant difference in BC and SOC storage between the 7-year-old and 11-year-old wolfberry plantations, which may be due in part to the large amounts of C offtakes in new branches and fruits. In Gansu Province, the C storage in the wolfberry plantations has reached up to 3.574 Tg in 2013, and the C sequestration potential of the existing wolfberry plantations was 0.134 Tg C/a. These results indicate that wolfberry planting is an ideal agricultural model to restore the degraded saline lands and increase the C sequestration capacity of agricultural lands in arid areas.
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DOI：
--
发表时间：
2013
期刊：
Pratacultural Science
影响因子：
--
作者：
Sun Ta
通讯作者：
Sun Ta
影响因子：
4.9
作者：
M. Spohn;L. Giani
通讯作者：
M. Spohn;L. Giani
DOI：
--
发表时间：
2004
期刊：
Advance in Earth Sciences
影响因子：
--
作者：
Dai Min-han
通讯作者：
Dai Min-han
DOI：
--
发表时间：
1995
期刊：
--
影响因子：
--
作者：
F. Ghassemi;A. Jakeman;H. Nix
通讯作者：
F. Ghassemi;A. Jakeman;H. Nix
影响因子：
3.7
作者：
Jaramillo, VJ;Kauffman, JB;Ellingson, LJ
通讯作者：
Ellingson, LJ