干旱区生态环境知识资源中心(Arid): 石林3种喀斯特生态系统的石面有机质和养分含量

Arid

	石林3种喀斯特生态系统的石面有机质和养分含量
其他题名	Epilithic Organic Matter and Nutrient Contents in Three Different Karst Ecosystems
	王电杰 1; 沈有信 1; 黄金 2
来源期刊	山地学报
ISSN	1008-2786
出版年	2015
卷号	33 期号:1 页码:16-24
中文摘要	通过实地取样和检测,研究了云南石林三类喀斯特生态系统中岩石附着物的有机质和养分含量及其环境影响因子。结果表明:1.石漠化生态系统的石面气象因子与次生林生态系统间差异显著,人工林生态系统介于二者之间;2.石漠化生态系统每平方米石表面上的平均有机质、氮、磷、钾含量分别为7.650.74 g,0.450.04 g,0.0290.003 g和0.070.006 g;人工林生态系统中分别为48.389.19 g,2.020.32 g,0.120.021 g和0.850.167 g;次生林生态系统中分别为92.2119.72 g,4.440.94 g,0.40.074 g和0.590.104 g。每平方米石表面上的平均有机质、氮、磷、钾含量均表现为次生林生态系统>人工林生态系统>石漠化生态系统;3.附着物碳酸钙含量、附着物含水量、石表面最低空气湿度显著影响附着物有机质含量。因此,南方喀斯特的不同生态系统,即使是已经石漠化的生态系统,其石面上存在着一定数量的有机物和养分蓄积,蓄积量的高低会受到各种气象因子和基质等的影响。
英文摘要	Researches from different ecosystems about rock as a potential nutrient sink existed. Yet,little is available about the quantity of the sink in a Karst ecosystem,a typical landscape of rock outcrops. Organic matter and major nutrient contents of epiliths on the carbonate rocks located in three different karst ecosystems and some relevant factors were studied by a pilot study. The results showed that: ( 1) The meteorological factor differences between stony desertification ecosystem and secondary forest ecosystem are significant,manmade forest ecosystem shows a transitional feathure in between; ( 2) With 7. 65 0. 74 g organic matter,0. 45 0. 04 g nitrogen,0. 029 0. 003 g phosphorus,0. 07 0. 006 g potassium per square meter rock surface in stony desertification ecosystem; 48. 38 9. 19 g organic matter,2. 02 0. 32 g nitrogen,0. 12 0. 021 g phosphorus,0. 85 0. 167 g potassium per square meter rock surface in manmade forest ecosystem; 92. 21 19. 72 g organic matter,4. 44 0. 94 g nitrogen, 0. 4 0. 074 g phosphorus,0. 59 0. 104 g potassium per square meter rock surface in secondary forest ecosystem. All of those values followed an increasing order from stony desertification ecosystem,to manmade forest ecosystem, and then secondary forest ecosystem; ( 3) Relative Lowest air humidity above rock surface,water content and calcium carbonate content of epiluths are significant factors affecting organic matter content of epiliths. It revealed that,carbonate rock in southern China function as an organic matter and nutrient pool,even in oligotrophic stony desertification ecosystem. Apparently,the quantity of the pool is determined by some meteorological factors and substrate factors.
中文关键词	喀斯特 ; 小气候 ; 岩石附着物 ; 有机质 ; 氮磷钾
英文关键词	Karst microclimate epiliths organic matter nitrogen phosphorous potassium
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:5377216
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233091
作者单位	1.中国科学院西双版纳热带植物园, 昆明, 云南 650000, 中国; 2.石林风景名胜区管理局, 石林, 云南 652211, 中国
推荐引用方式 GB/T 7714	王电杰,沈有信,黄金. 石林3种喀斯特生态系统的石面有机质和养分含量[J],2015,33(1):16-24.
APA	王电杰,沈有信,&黄金.(2015).石林3种喀斯特生态系统的石面有机质和养分含量.山地学报,33(1),16-24.
MLA	王电杰,et al."石林3种喀斯特生态系统的石面有机质和养分含量".山地学报 33.1(2015):16-24.