干旱区生态环境知识资源中心(Arid): 黔桂喀斯特山地主要生态系统服务时空变化

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	黔桂喀斯特山地主要生态系统服务时空变化
其他题名	Temporal and spatial variation of main ecosystem services in Guizhou and Guangxi Karst Mountainous region
	尚二萍; 许尔琪
来源期刊	资源科学
ISSN	1007-7588
出版年	2017
卷号	39 期号:10 页码:2000-2015
中文摘要	黔桂喀斯特山地的生态系统服务评估是生态系统恢复、生态功能区划和建立生态补偿机制、保障国家生态安全的重大战略需求。本文在降水贮存量法、修正土壤流失方程RUSLE、植被固碳释氧等方法基础上,基于实际径流小区实验数据,修正或引入径流系数、降雨侵蚀力、石漠化因子、岩石风化固碳等参数模型,定量评估1990- 2015年包括水源涵养、土壤保持和固碳释氧等3项主要生态系统服务的时空变化。研究结果表明:①研究区水源涵养、土壤保持、固碳量和释氧量的总量为630.15亿m~3/a、189.02亿t/a、6187.49万t/a和16 002.18万t/a;单位量分别为2943.43 m~3/(hm~2· a)、885.18t/(hm~2· a)、2.89t/(hm~2· a)和7.47t/(hm~2· a);②水源涵养功能以低、较低等级为主,分别占总面积的33.72%和20.55%;土壤保持能力以低、较低和极高等级为主,分别占总面积的24.90%、20.90%和21.44%;固碳释氧功能等级以较低、中等和较高等级为主,分别占总面积的35.47%、29.83%和21.49%;③林地对生态系统服务的贡献最大,其水源涵养、土壤保持和固碳释氧生态系统服务分别是耕地和草地的1.85与2.55倍,1.70与1.03倍,1.16与1.09倍;④1990-2015年,黔桂喀斯特山地水源涵养量、土壤保持量和固碳释氧均呈现增加趋势:对比1990-2000年和2000-2015年两个时段,前一时段水源涵养量和土壤保持量均呈下降趋势,下降幅度分别为6.25%和3.45%;后一时段水源涵养量、土壤保持量、固碳量和释氧量均呈增加趋势,增加幅度在2.65%~7.49%之间。
英文摘要	The ecosystem service assessment of Guizhou and Guangxi karst mountainous region is a major strategic requirement of ecological system restoration,ecological function zoning and the establishment of ecological compensation mechanism to guarantee national ecological security in China. Here we calculated main ecosystem services by pulling rainfall erosivity based on experimental data of actual runoff area,rocky desertification factor and rock- weathering- related carbon sinks into the precipitation storage method,revised universal soil loss equation and carbon sequestration equation. Temporal and spatial changes across the three major ecosystem service functions,including water conservation,soil conservation,and carbon sequestration from 1990 to 2015 were estimated. We found that the total amount of water conservation,soil conservation, carbon sequestration and oxygen release was 63.015 billion m~3/year,16.492 billion tons,61.8749 million tons/year and 160.0218 million tons/year;the unit amount was 294.34m~3/hm~2,77.037t/(hm~2 · a),2.89t/hm~2 and 7.47t/hm~2,respectively. The proportion of low and lower water conservation were 33.72% and 20.55%;the proportion of low,lower of the soil conservation were 49.91% and 31.21%;the proportion of lower,middle and high carbon fixation and oxygen release were 35.47%, 29.83% and 21.49%. The contribution of karst forest land to water conservation,soil conservation and carbon fixation services is biggest. The proportion of water conservation,soil conservation and carbon fixation of forest land,cultivated land and grassland was 1∶1.85∶2.55,1∶1.64∶1.02 and 1∶ 1.16∶1.09. From 1990 to 2015,main ecosystem services such as water conservation,soil retention and carbon fixation all increased. From 1990 to 2000 and 2000 to 2015,the trend of water conservation and soil retention in the previous period was opposite and the variation range was between 6.25 and 13.70%. Water conservation in the latter period and carbon sequestration showed an increasing trend of 2.865%~7.493%.
中文关键词	黔桂喀斯特山地 ; 生态系统服务 ; 水源涵养 ; 土壤保持 ; 固碳释氧 ; 岩石风化固碳
英文关键词	Guizhou and Guangxi Karst Mountain region ecosystem services water conservation soil conservation carbon fixation and oxygen release rock-weathering-related carbon sinks
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6098430
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237230
作者单位	中国科学院地理科学与资源研究所, 中国科学院陆地表层格局与模拟重点实验室, 北京 100101, 中国
推荐引用方式 GB/T 7714	尚二萍,许尔琪. 黔桂喀斯特山地主要生态系统服务时空变化[J]. 中国科学院地理科学与资源研究所,2017,39(10):2000-2015.
APA	尚二萍,&许尔琪.(2017).黔桂喀斯特山地主要生态系统服务时空变化.资源科学,39(10),2000-2015.
MLA	尚二萍,et al."黔桂喀斯特山地主要生态系统服务时空变化".资源科学 39.10(2017):2000-2015.