干旱区生态环境知识资源中心(Arid): Optimizing the quantity and spatial patterns of farmland shelter forests increases cotton productivity in arid lands

Arid

DOI	10.1016/j.agee.2020.106832
	Optimizing the quantity and spatial patterns of farmland shelter forests increases cotton productivity in arid lands
	Li, Xiaoyu 1,2; Liu, Lijuan 1; Xie, Jiangbo 1; Wang, Zhongyuan 1; Yang, Shuya 2; Zhang, Zhenyu 2; Qi, Shanzhong 3; Li, Yan1
通讯作者	Li, Yan
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2020
卷号	292
英文摘要	Land degradation/desertification occurs widely in arid lands and its outcomes are ecologically, economically, and socially negative. It is one of the most serious environmental problems that the world has to face today. The establishment of shelterbelts is an effective way to combat desertification and increase crop productivity in arid land farming practices. The ideal state of a farmland shelterbelt should be one that provides maximum protective effect with minimum use in terms of land and water resources. The positive effects of the shelter forest in desertification control were widely demonstrated. However, its effects on crop productivity are somewhat equivocal. Most studies were carried out at the plot or field scale, for evaluation on areas larger than the field-scale or plot-scale is difficult to undertake due to difficulties in setting controls. Thus, a comprehensive evaluation of the shelterbelt effect on crop yield at landscape scale is highly required. This study presents a rare insight into the optimum balance between minimizing the quantity of shelterbelts and maximizing the yield of crops based on the combination of a light-use-efficiency model (CASA) and landscape indices from a landscape ecology perspective. Farmland has rapidly expanded by 43 % in the Manas River Basin of Xinjiang, Northwest (NW) China, since 2000. Overexploitation of land resources and limited water resources lead to serious land degradation. However, development of shelterbelts was left behind in this area with an increase of 29.39 % only during this period. The shelterbelts are not only quantitively insufficient but also irrational in spatial patterns. Cotton productivity was significantly correlated with the spatial patterns of shelterbelts. The optimum of shelterbelt-to-patch ratio for maximizing cotton yield was 3.5 % in the study area. When the amount of shelterbelts is higher than 3.5 %, it is no longer associated with improved cotton yield. Simultaneously, higher connectivity and ring values always corresponded to higher cotton yields. Hence, in future practices, we should first ensure a certain amount of shelterbelts, while simultaneously optimizing the spatial configuration of shelterbelts to maximize their benefits. After the quantity of shelterbelts reached 3.5 %, however, improving the quality (the spatial configuration) - increasing their connectivity and ring value, becomes the only effective way to improve crop yield.
英文关键词	Farmland shelter forest Cotton productivity Landscape pattern Arid land
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000514931700020
WOS关键词	LIGHT USE EFFICIENCY ; SUSTAINABLE DEVELOPMENT ; RIVER-BASIN ; CHINA ; DESERTIFICATION ; WINDBREAKS ; SCALE ; REGIONS ; YIELD ; FIELD
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313977
作者单位	1.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Linan 311300, Peoples R China; 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang 830011, Peoples R China; 3.Shandong Normal Univ, Sch Geog & Environm, Jinan 250358, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaoyu,Liu, Lijuan,Xie, Jiangbo,et al. Optimizing the quantity and spatial patterns of farmland shelter forests increases cotton productivity in arid lands[J]. 中国科学院新疆生态与地理研究所,2020,292.
APA	Li, Xiaoyu.,Liu, Lijuan.,Xie, Jiangbo.,Wang, Zhongyuan.,Yang, Shuya.,...&Li, Yan.(2020).Optimizing the quantity and spatial patterns of farmland shelter forests increases cotton productivity in arid lands.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,292.
MLA	Li, Xiaoyu,et al."Optimizing the quantity and spatial patterns of farmland shelter forests increases cotton productivity in arid lands".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 292(2020).