紫色土区坡耕地植物篱模式综合生态效益评价_蒲玉琳谢德体倪九派魏朝富概述.pdf

2014 1 22 1 Chinese Journal of Eco-Agriculture, Jan. 2014, 22(1): 44?51 DOI: 10.3724/SP.J.1011.2014.30685 * 1,2,3 2,3** 2,3 2,3 (1. 611130; 2. 400715; 3. 400715) , 4 , (B2) (B3) 212.6%~346.6% 93.7%~126.0% 23.6%~35.8% B1(0.962)B4(0.495)B3(0.332) , 13? 20? (211.0%) , (A) , (B4) 20? ?? 4 , , , (B1) 206.4%~301.9% 228.6%~278.4% B2(1.165) 20? (295.0%) 13? : S157.2 : A : 1671-3990(2014)01-0044-08 Evaluation on comprehensive ecological benefits of different hedgerow patterns on slope-farmland in purple soil area PU Yulin1,2,3, XIE Deti2,3, NI Jiupai2,3, WEI Chaofu2,3 (1. College of Resources and Environment, Sichuan Agricultural University, Chengdu 611130, China; 2. College of Resources and Environment, Southwest University, Chongqing 400715, China; 3. Chongqing Engineering Research Center for Agricultural Non-point Source Pollution Control in the Three Gorges Reservoir Area, Chongqing 400715, China) Abstract Hedgerow patterns have been used to control soil and water loss, agricultural non-point source pollution (especially nitrogen and phosphorus from slope-farmlands) in hilly areas. A comprehensive and rational evaluation of the ecological benefits of hedgerow patterns in slope-farmlands was critical for further evaluating eco-economic and social benefits of hedgerows. This has been deemed necessary for promoting and popularizing the application of optimized hedgerow patterns in hilly areas. However, critical questions (e.g., the use of unilateral evaluation indexes) have persisted relative studies on evaluation of the ecological benefits of hedgerow. These indexes have generally not accounted for controlling agricultural non-point source pollutants. Hence this paper established an evaluation index system including indexes for soil and water loss, agricultural non-point pollutants, anti-erosion forces and land productivity. It also evaluated the comprehensive ecological benefits of Amorpha fruticosa, Vetiveria zizaniodes, Medicago sativa and Eulaliopsis binata hedgerow