干旱区生态环境知识资源中心(Arid): 石羊河流域人工防护林碳效益估算

Arid

	石羊河流域人工防护林碳效益估算
其他题名	Carbon benefits evaluation of the artificial shelter forest in the Shiyanghe River Basin
	王新友; 马全林; 王耀琳
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2020
卷号	40 期号:4 页码:197-205
中文摘要	人工植被建设具有显著的碳汇作用,是固定CO_2以缓解气候变化的最有效措施。为揭示固沙造林对沙漠生态系统碳汇的影响,以甘肃省森林资源二类清查数据(2016年)为基础,应用CBP(Carbon Benefits Project)碳计量模型工具,研究了干旱地区石羊河流域人工防护林的碳效益。结果表明:石羊河流域人工固沙林当前总碳储量为0.81 Tg,价值2.03亿元;每公顷年固碳0.45 Mg,价值113.13元;在0~100 a时间尺度上,最大固碳潜力为2.19 Tg,价值5.51亿元。绿洲防护林当前的总碳储量是2.51 Tg,价值6.31亿元;每公顷年固碳5.2 Mg,价值1307.28元;在0~50 a时间尺度上,最大固碳潜力是3.03 Tg,价值7.62亿元。在0~100 a时间尺度上,石羊河流域人工固沙林的碳效益呈快速增长(0~25 a)-急速下降(25~30 a)-缓慢下降(35~100 a)的向上单峰型变化趋势。绿洲防护林的碳效益随林龄在0~50 a时间尺度上呈持续增加的变化趋势。固沙林的衰败死亡是降低人工固沙林碳效益的重要因素,随着年死亡率从2.5%降低到2.0%、1.0%、0%,39 a林龄的人工固沙林碳效益(总碳储量、碳密度和固碳速率)分别增长1.51、 2.54、3.56倍。退耕还林措施显著提升人工固沙林碳效益,退耕还林66 667 hm~2、133 334 hm~2下39 a林龄的人工固沙林碳储量分别增长6.27、25.59倍,碳密度分别增长2.50、6.44倍,固碳速率分别增加2.67、6.67倍。因此,固沙造林是增加沙漠生态系统碳汇的有效措施,提升人工固沙林碳汇效益的主要途径就是保证其生长发育,避免衰败和死亡。为了避免将来变成典型的碳源,增加温室气体排放,石羊河流域人工固沙林亟待科学保育和重新恢复。
英文摘要	Artificial vegetation construction is considered effective options for carbon dioxide sequestration to mitigate the impact of climate change. Based on the CBP(Carbon Benefits Project)carbon measurement model, the efficiency of artificial shelter forest in Shiyanghe River Basin in carbon sequestration was studied using the secondary inventory data of forest resources in Gansu Province(2016). The results show that the total carbon storage of sand-fixing plantation in Shiyanghe River Basin is 0.81 Tg C,with a value of 203 million RMB. The annual carbon sequestration per hectare is 0.45 Mg,with a value of 113.13 RMB. The maximum carbon sequestration potential is 2.19 Tg C on the 0-100 years scale,with a value of 551 million RMB. The total carbon storage of oasis shelterbelt in Shiyang River Basin is 2.51 Tg C,with a value of 631 million RMB. The annual carbon sequestration per hectare is 5.2 Mg,with a value of 1307.28 RMB. The maximum carbon sequestration potential is 3.03 Tg C on the 0-50 years scale,with a value of 762 million RMB. On the 0-100 years scale,the carbon sequestration benefits of the sand-fixing plantation in Shiyang River basin changed significantly with the planting years. The carbon storage showed rapid growth(0-25 years),rapid decline(25-30 years),slow decline(35-100 years),with an upwardly unimodal-type change trend. The carbon sequestration benefits of the oasis shelterbelt in Shiyang River basin showed sustained growth. The death rate is the most important factor affecting carbon sequestration efficiency of the plantation in Shiyang River Basin. With the annual death rate dropped from the rates of 2.5% to 2%,1% and 0,after 39 years,its carbon benefits are respectively 1.51,2.54 and 3.56 times that of the original sand-fixing plantation in the 39th year. The management measures of Grain for Green Project can significantly improve the carbon sequestration efficiency of the plantation in Shiyang River Basin. With the Grain for Green Project progressing at the area of 66 667 hm~2 and 133 334 hm~2,after 39 years,its carbon reserves are respectively 6.27 and 25.59 times,its carbon density are respectively 2.50 and 6.44 times, its carbon sequestration rate are respectively 2.67 and 6.67 times that of the original sand-fixing plantation in the 39th year. Therefore,sand fixation afforestation is an effective measure to increase carbon sink of desert ecosystem. It is necessary to strengthen the management and protection of sand-fixing plantation and the restoration of degraded forest to maximize its carbon benefit and avoid becoming a typical carbon source in the future.
中文关键词	CBP碳计量模型 ; 碳储量 ; 固碳速率 ; 人工固沙林 ; 人工防护林
英文关键词	CBP(Carbon Benefits Project)carbon measurement model carbon storage carbon sequestration rate sand-fixing plantation artificial shelter forest
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
WOS研究方向	Forestry
CSCD记录号	CSCD:6798879
来源机构	甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336860
作者单位	王新友, 甘肃省治沙研究所;;甘肃广播电视大学, 甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地;;, 兰州;;兰州, 甘肃;;甘肃 730070;;730030, 中国.; 马全林, 甘肃省治沙研究所, 甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地, 兰州, 甘肃 730070, 中国.; 王耀琳, 甘肃省治沙研究所, 甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	王新友,马全林,王耀琳. 石羊河流域人工防护林碳效益估算[J]. 甘肃省治沙研究所,2020,40(4):197-205.
APA	王新友,马全林,&王耀琳.(2020).石羊河流域人工防护林碳效益估算.中国沙漠,40(4),197-205.
MLA	王新友,et al."石羊河流域人工防护林碳效益估算".中国沙漠 40.4(2020):197-205.