Artificial Management Improves Soil Moisture, C, N and P in an Alpine Sandy Meadow of Western China  

作　　者：WU Gao-Lin LI Wei ZHAO Ling-Ping SHI Zhi-Hua 

机构地区：[1]State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling712100 (China) [2]Institute of Soil and Water Conservation of Chinese Academy of Sciences and Ministry of Water Resource, Yangling712100 (China) [3]Key Laboratory of Arid and Grassland Ecology of the Ministry of Education, Lanzhou University, Lanzhou 730000 (China)

出　　处：《Pedosphere》2011年第3期407-412,共6页土壤圈（英文版）

基　　金：Supported by the Strategic and Leading Sci-Tech Project of the Chinese Academy of Sciences (No.XDA05050403);the Key Laboratory of Arid and Grassland Ecology of the Ministry of Education, Lanzhou University, China, the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, China (Nos.10502-Z8-5 and 10502-Z12);the Hundred Talents Program of the Chinese Academy of Sciences

摘　　要：Regeneration of degraded grassland ecosystems is a significant issue in restoration ecology globally. To understand the effects of artificial management measures on alpine meadows, we surveyed topsoil properties including moisture, organic carbon (SOC), nitrogen (N), and phosphorus (P) contents five years after fencing and fencing + reseeding management practices in a sandy meadow in the eastern Qinghai-Tibetan Plateau, northwestern China. Both the fencing and fencing + reseeding management practices significantly increased soil moisture storage, SOC, total N, available N, total P, and available P, as compared to the unmanaged control. Fencing plus reseeding was more effective than fencing alone for improving soil C, N, and P contents. These suggested that rehabilitation by reseeding and fencing generally had favorable effects on the soil properties in degraded sandy alpine meadows, and was an effective approach for restoration of degraded meadow ecosystems of the Qinghai-Tibetan Plateau.Regeneration of degraded grassland ecosystems is a significant issue in restoration ecology globally. To understand the effects of artificial management measures on alpine meadows, we surveyed topsoil properties including moisture, organic carbon （SOC）, nitrogen （N）, and phosphorus （P） contents five years after fencing and fencing ＋ reseeding management practices in a sandy meadow in the eastern Qinghai-Tibetan Plateau, northwestern China. Both the fencing and fencing reseeding management practices significantly increased soil moisture storage, SOC, total N, available N, total P, and available P, as compared to the unmanaged control. Fencing plus reseeding was more effective than fencing alone for improving soil C, N, and P contents. These suggested that rehabilitation by reseeding and fencing generally had favorable effects on the soil properties in degraded sandy alpine meadows, and was an effective approach for restoration of degraded meadow ecosystems of the Qinghai-Tibetan Plateau.

关 键 词：degraded ecosystem FENCING RESEEDING restoration ecology soil properties 

分 类 号：S152.7[农业科学—土壤学] TP308[农业科学—农业基础科学]