干旱区生态环境知识资源中心(Arid): 若尔盖县沙化草地服务功能及其价值损失

Arid

	若尔盖县沙化草地服务功能及其价值损失
其他题名	Research on the Desertification Grassland Services and Their Value Losses in Ruoergai County
	汪晓菲; 何平; 康文星
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2014
卷号	28 期号:5 页码:62-70
中文摘要	根据野外试验和室内分析资料，对若尔盖县未沙化和沙化草地的生物生产力、吸存CO_2和释O_2、水源涵养、保存土壤养分、保存土壤有机碳和草地载畜量等部分服务功能及其价值进行研究。结果表明：轻度、中度、重度和极重度沙化草地100 cm深土层内的自然含水量分别比未沙化草地少348. 22 t/hm~2，573.60 t/hm~2,1 199. 13 t/hm~2和1 836. 25 t/hm~2,其毛管持水能力也分别只有未沙化草地的79.33%，71.86%,53. 20%和35.02%;轻度、中度、重度和极重度沙化草地100 cm深土层内土壤有机碳储量分别比未沙化草地少21. 92%，30. 89%，54. 07%和76. 28%；沙化草地20 cm深土层已损失养分（N、P、K）为62. 78910~3 t;沙化草地每1年损失载畜量114 212.24只羊单位，少吸存大气中CO_2 1 2 . 5 9 4 610~4 t，少释放O_2 10. 148 510~4 t；每1年损失的吸存大气CO_2和释放O_2及载畜量价值共计12 100. 595 710~4元；轻度、中度、重度和极重度沙化草地已经损失土壤储存有机碳，保留养分和储蓄水量的功能价值分别为758 10~8,14410~8,14910~8 ,27510~8元,共计损失1 328X10~8元，若尔盖草原因沙化造成的服务功能价值的损失是巨大的。
英文摘要	Based on the data of field experiments and laboratory analysis, which were used for analyzing the some other services and their valuation of the biological productivity of grassland sequestration of CO_2 and release O_2,water conservation, preservation of soil nutrients, soil organic carbon and grassland preservation stocking rates of the no sandy and sandy grassland in Ruoergai county. The results showed that the natural moisture content in soil 100 cm deep inside of mild, moderate, severe and very severe desertification grassland was 348. 22 t/hm~2,573. 60 t/hm~2,1 199. 13 t/hm~2 and 1 836. 25 t/hm~2 less than that of the non-desertification grassland, and their capillary water holding capacity accounted for 79. 33%,71. 86%,53. 20% and 35. 02% of non-desertification grassland. The organic carbon storage in soil 100 cm deep inside of mild, moderate, severe and very severe desertification grassland was 21. 92%, 30. 89%, 54. 07% and 76. 28% low than that of the non-desertification grassland. At the same time, desertification led to loss of 62. 789X 10~3 t of nutrient （N，P，K nutrient elements） in soil 100 cm deep inside. The losses of carrying amount of livestock was about 114 212. 24 sheep units per year, with decrease in sequestration of atmospheric CO_2 by 12. 594 6* 10~4 t/a and in release of O_2 by 10. 148 5X10~4 t/a. Desertification caused annual loss of economic value by RMB ￥12 100. 595 7 X 10~4 per year in grassland sequestration of atmospheric CO_2 and release of O_2 and the carrying living stocks capacity. The amount of economic value decreased by RMB ￥758 * 10~8,144 * 10~8,149 * 10~8,275 * 10~8 for loss of the storage of organic carbon, retention of nutrients and water regulation function value according to the mild,moderate, severe and very severe desertification grassland levels, respectively. The total loss was about RMB ￥1 328*10~8. Loss of service value of Ruoergai grassland by desertification was enormous.
中文关键词	沙化草地 ; 服务功能与价值 ; 若尔盖高原
英文关键词	desertification grassland services and value Ruoergai Plateau
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5274071
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231775
作者单位	中南林业科技大学生命科学与技术学院, 长沙, 湖南 410004, 中国
推荐引用方式 GB/T 7714	汪晓菲,何平,康文星. 若尔盖县沙化草地服务功能及其价值损失[J],2014,28(5):62-70.
APA	汪晓菲,何平,&康文星.(2014).若尔盖县沙化草地服务功能及其价值损失.水土保持学报,28(5),62-70.
MLA	汪晓菲,et al."若尔盖县沙化草地服务功能及其价值损失".水土保持学报 28.5(2014):62-70.