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黄土高原雨水资源化潜力及其对生态恢复的支撑作用
吴普特1; 赵西宁1; 张宝庆1,2; 高晓东1
2017
Source Publication水力发电学报
Volume36Issue:8Pages:1-11
Abstract

利用可变下渗容量(VIC)模型对黄土高原雨水资源化潜力进行定量分析,并采用两种数据集的归一化
植被指数和遥感蒸散发产品,研究黄土高原植被覆盖时空演变趋势及蒸散耗水量变化。结果表明:近40 a 来黄土
高原年均气温上升趋势显著。退耕还林(草)工程实施以来,黄土高原植被覆盖状况明显好转,但蒸散耗水量急
剧增加,2000—2014 年间增加了134 亿m3,年均增加9 亿m3,水资源供需矛盾进一步加剧。大规模植被建设开
始后,黄土高原年均蒸散耗水总量为2282 亿m3,而年均雨水资源化潜力为1807 亿m3,约为蒸散量的80%。通
过适当调整植被类型、优化种植结构、抑蒸保墒、径流调控和增加土壤入渗等措施,降低植被奢侈性耗水,雨水
资源可基本满足植被恢复耗水需求,有效支撑区域生态建设的可持续发展。

Other Abstract

In order to alleviate the co-existing situation of severe water shortage and soil erosion, the
Rainwater Harvesting Potential (RHP) over the Loess Plateau was estimated by using the Variable
Infiltration Capacity (VIC) model, which is a large-scale distributed hydrologic model. Two Normalized
Difference Vegetation Index (NDVI) datasets and MODIS evapotranspiration product were used to
characterize vegetation restoration and its water consumption rule over the Loess Plateau. The results
show that mean annual temperature of the Loess Plateau increased markedly at a rate of 0.055 ℃/year
over the past four decades. The vegetation cover on the Loess Plateau improved significantly with the
implementation of “Grain-For-Green” project. With the impact of both vegetation restoration and high
water losses resulted from climate warming, the evaporated water consumption of the Loess Plateau
significantly raised during 2000-2014 (increased by 134×108 m3), which have made water shortage to be
an increasingly severe issue. The annual mean evapotranspiration over the Loess Plateau is 2282×108 m3.
The annual mean RHP on the Loess Plateau was 1807×108 m3, which was about 80% of annual mean
evapotranspiration. Through cropping structure adjustment, soil water preservation, and soil water high
efficient use, and rainfall-runoff regulation, the RHP was generally enough to support the vegetation
restoration. There is considerable scope for RHP across the Loess Plateau, which could potentially provide
enough water resources to the ecological restoration over the Loess Plateau.

Keyword雨水利用 植被恢复 退耕还林 气候变化 蒸散耗水
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8412
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学水土保持研究所
2.兰州大学资源环境学院西部环境教育部重点实验室
Recommended Citation
GB/T 7714
吴普特,赵西宁,张宝庆,等. 黄土高原雨水资源化潜力及其对生态恢复的支撑作用[J]. 水力发电学报,2017,36(8):1-11.
APA 吴普特,赵西宁,张宝庆,&高晓东.(2017).黄土高原雨水资源化潜力及其对生态恢复的支撑作用.水力发电学报,36(8),1-11.
MLA 吴普特,et al."黄土高原雨水资源化潜力及其对生态恢复的支撑作用".水力发电学报 36.8(2017):1-11.
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