期刊论文

中文

水土保持学报

1009-2242

2014

28

5

62-70

10.13870/j.cnki.stbcxb.2014.05.012

(201104009):国家林业公益性行业科研专项 (2007-4-15):科技部公益性研究项目

本校为第一机构

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. 789×...

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 CO2 and release O2,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 was348.22t/hm2,573.6...