RADIATION BALANCE OF AN ALFALFA CROP IN SAUDI-ARABIA

被引：4

作者：

ALYEMENI, MN ^{[1
]}

GRACE, J ^{[1
]}

机构：

[1] UNIV EDINBURGH, INST ECOL & RESOURCE MANAGEMENT, EDINBURGH EH9 3JU, MIDLOTHIAN, SCOTLAND

来源：

JOURNAL OF ARID ENVIRONMENTS | 1995年 / 29卷 / 04期

关键词：

RADIATION; ALBEDO; ALFALFA; AL-KHARJ; SAUDI ARABIA;

D O I：

10.1016/S0140-1963(95)80017-4

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Short-wave reflectivity or albedo is an important component of net radiation which represents the major determinant of radiation balance of crop surface. This study was conducted on an irrigated alfalfa crop field at Al-Kharj agricultural area in Saudi Arabia, grown according to normal agricultural practices. Data on radiation balance and crop cover were collected over a number of days from March to October 1986, crop albedo varying from 0.4 in early morning to 0.20 at noon, the overall mean value of the crop albedo being estimated at 0.26. The relation between the individual components of radiation balance was studied, and a significant correlation between incident radiation and net radiation was found. Possible causes responsible for changes in crop albedo were discussed.

引用

页码：447 / 454

页数：8

共 15 条

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